commit

src/app/about/page.tsx

@@ -0,0 +1,80 @@
+import { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  title: 'About'
+};
+
+export default function AboutPage() {
+  return (
+    <div className='min-h-screen px-4 py-12 sm:px-6 lg:px-8'>
+      <div className='mx-auto max-w-3xl'>
+        {/* Header */}
+        <div className='mb-12 text-center'>
+          <h1 className='text-foreground text-3xl font-bold tracking-tight sm:text-4xl'>About</h1>
+          <p className='text-muted-foreground mt-4 text-lg'>Learn more about this project</p>
+        </div>
+
+        {/* Content Sections */}
+        <div className='space-y-8'>
+          {/* Open Source Section */}
+          <section className='bg-card rounded-2xl border p-8 shadow-sm'>
+            <h2 className='text-foreground mb-4 text-xl font-semibold'>Open-Source Project</h2>
+            <p className='text-muted-foreground text-lg leading-relaxed'>
+              This is an open-source Next.js admin dashboard starter built with modern web
+              technologies. It provides a solid foundation for building powerful admin interfaces
+              and dashboards. The source code is freely available for developers to use, modify, and
+              distribute.
+            </p>
+          </section>
+
+          {/* Demo Purpose Section */}
+          <section className='bg-card rounded-2xl border p-8 shadow-sm'>
+            <h2 className='text-foreground mb-4 text-xl font-semibold'>Demo Purpose</h2>
+            <p className='text-muted-foreground text-lg leading-relaxed'>
+              This application serves as a demo for demonstration purposes. It showcases the
+              features, components, and capabilities of the admin dashboard starter. Feel free to
+              explore the interface, test the functionality, and evaluate if it meets your project
+              requirements.
+            </p>
+          </section>
+
+          {/* Auth Section */}
+          <section className='bg-card rounded-2xl border p-8 shadow-sm'>
+            <h2 className='text-foreground mb-4 text-xl font-semibold'>Authentication by Auth.js</h2>
+            <p className='text-muted-foreground text-lg leading-relaxed'>
+              Authentication for this application is now handled by{' '}
+              <a
+                href='https://authjs.dev'
+                target='_blank'
+                rel='noopener noreferrer'
+                className='text-primary font-medium hover:underline'
+              >
+                Auth.js
+              </a>
+              . The app owns its user, workspace, membership, and product data model directly in
+              Postgres, which keeps authentication and authorization logic inside the codebase.
+            </p>
+          </section>
+
+          {/* Data Privacy Section */}
+          <section className='bg-card rounded-2xl border p-8 shadow-sm'>
+            <h2 className='text-foreground mb-4 text-xl font-semibold'>Data Privacy</h2>
+            <p className='text-muted-foreground text-lg leading-relaxed'>
+              We take your privacy seriously. No personal data is misused, shared, or sold to third
+              parties. Any information collected during your use of this demo application is used
+              solely for the purpose of providing the demonstration experience and is handled in
+              accordance with best practices for data protection.
+            </p>
+          </section>
+        </div>
+
+        {/* Footer Note */}
+        <div className='mt-12 text-center'>
+          <p className='text-muted-foreground text-sm'>
+            Built with Next.js, Tailwind CSS, and shadcn/ui
+          </p>
+        </div>
+      </div>
+    </div>
+  );
+}

src/app/api/announcements/[id]/attachment/route.ts

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+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { announcements } from '@/db/schema';
+import { getAnnouncementByIdForAccess } from '@/features/announcements/server/announcement-data';
+import { readStoredAnnouncementAttachment } from '@/lib/announcement-storage';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export const runtime = 'nodejs';
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { id } = await params;
+    const announcementId = Number(id);
+
+    if (Number.isNaN(announcementId)) {
+      return NextResponse.json({ message: 'Invalid announcement request' }, { status: 400 });
+    }
+
+    const announcement = await getAnnouncementByIdForAccess({
+      id: announcementId,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!announcement || !announcement.attachmentStorageKey) {
+      return NextResponse.json({ message: 'ไม่พบไฟล์แนบประกาศ' }, { status: 404 });
+    }
+
+    const persisted = await db.query.announcements.findFirst({
+      where: and(
+        eq(announcements.id, announcementId),
+        eq(announcements.organizationId, organization.id)
+      )
+    });
+
+    if (!persisted?.attachmentStorageKey || !persisted.attachmentFileType || !persisted.attachmentFileName) {
+      return NextResponse.json({ message: 'ไม่พบไฟล์แนบประกาศ' }, { status: 404 });
+    }
+
+    const file = await readStoredAnnouncementAttachment(persisted.attachmentStorageKey);
+    const disposition =
+      persisted.attachmentFileType === 'application/pdf' ||
+      persisted.attachmentFileType.startsWith('image/')
+        ? 'inline'
+        : 'attachment';
+
+    return new NextResponse(file, {
+      headers: {
+        'Content-Type': persisted.attachmentFileType,
+        'Content-Length': String(persisted.attachmentFileSize ?? file.byteLength),
+        'Content-Disposition': `${disposition}; filename*=UTF-8''${encodeURIComponent(persisted.attachmentFileName)}`,
+        'Cache-Control': 'private, no-store'
+      }
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if ((error as NodeJS.ErrnoException)?.code === 'ENOENT') {
+      return NextResponse.json({ message: 'ไม่พบไฟล์แนบประกาศ' }, { status: 404 });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถเปิดไฟล์แนบประกาศได้' }, { status: 500 });
+  }
+}

src/app/api/announcements/[id]/pin/route.ts

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+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { announcements } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  getAnnouncementByIdForAccess,
+  isAnnouncementEligibleForPinning,
+  serializeAnnouncementInternal
+} from '@/features/announcements/server/announcement-data';
+import { hasPermission } from '@/lib/auth/authorization';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+function parseId(value: string) {
+  const id = Number(value);
+
+  if (Number.isNaN(id)) {
+    throw new Error('รหัสประกาศไม่ถูกต้อง');
+  }
+
+  return id;
+}
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+
+    if (!hasPermission(session.user.effectivePermissions, 'announcement:publish')) {
+      return NextResponse.json(
+        { message: 'คุณไม่มีสิทธิ์จัดการการปักหมุดประกาศ' },
+        { status: 403 }
+      );
+    }
+
+    const { id } = await params;
+    const announcementId = parseId(id);
+    const requestMetadata = getRequestMetadata(request);
+    const existing = await getAnnouncementByIdForAccess({
+      id: announcementId,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!existing) {
+      return NextResponse.json({ message: 'ไม่พบประกาศ' }, { status: 404 });
+    }
+
+    if (
+      !isAnnouncementEligibleForPinning({
+        status: existing.status,
+        startDate: existing.startDate,
+        endDate: existing.endDate
+      })
+    ) {
+      return NextResponse.json(
+        { message: 'สามารถปักหมุดได้เฉพาะประกาศที่เผยแพร่แล้วเท่านั้น' },
+        { status: 400 }
+      );
+    }
+
+    if (existing.isPin) {
+      return NextResponse.json({
+        success: true,
+        message: 'ปักหมุดประกาศเรียบร้อยแล้ว'
+      });
+    }
+
+    await db
+      .update(announcements)
+      .set({
+        isPin: true,
+        updatedBy: session.user.id,
+        updatedAt: new Date()
+      })
+      .where(and(eq(announcements.id, announcementId), eq(announcements.organizationId, organization.id)));
+
+    const updated = await getAnnouncementByIdForAccess({
+      id: announcementId,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!updated) {
+      throw new Error('ไม่พบข้อมูลประกาศหลังปักหมุด');
+    }
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ANNOUNCEMENTS,
+      action: AUDIT_ACTION.ANNOUNCEMENT_PINNED,
+      entityName: updated.title,
+      entityId: updated.id,
+      oldValue: toAuditValue(serializeAnnouncementInternal(existing)),
+      newValue: toAuditValue(serializeAnnouncementInternal(updated)),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'ปักหมุดประกาศเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถปักหมุดประกาศได้' }, { status: 500 });
+  }
+}

src/app/api/announcements/[id]/route.ts

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+import { and, eq } from "drizzle-orm";
+import { NextRequest, NextResponse } from "next/server";
+import { announcements } from "@/db/schema";
+import {
+  canDeleteContent,
+  canEditContent,
+  canTransitionContent,
+  getNextContentStatus,
+} from "@/features/content-approval/lib/workflow";
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue,
+} from "@/features/audit-logs/server/audit-service";
+import {
+  getAnnouncementByIdForAccess,
+  getAnnouncementReviewRecipientIds,
+  getOrganizationAnnouncementRecipientIds,
+  serializeAnnouncementInternal,
+  serializeAnnouncementForAccess,
+} from "@/features/announcements/server/announcement-data";
+import {
+  announcementDraftActionSchema,
+  announcementDraftSchema,
+} from "@/features/announcements/schemas/announcement";
+import {
+  createAnnouncementNotification,
+  createContentWorkflowNotification,
+} from "@/features/notifications/server/notification-service";
+import { AuthError, requireOrganizationAccess } from "@/lib/auth/session";
+import {
+  ANNOUNCEMENT_MAX_FILE_SIZE,
+  deleteStoredAnnouncementAttachment,
+  saveAnnouncementAttachment,
+} from "@/lib/announcement-storage";
+import { getDatabaseErrorMessage } from "@/lib/db-errors";
+import { db } from "@/lib/db";
+
+const SUPPORTED_ATTACHMENT_TYPES = new Set([
+  "application/pdf",
+  "image/jpeg",
+  "image/png",
+  "application/msword",
+  "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+  "application/vnd.ms-excel",
+  "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+]);
+
+function normalizeDateValue(value: FormDataEntryValue | null) {
+  if (typeof value !== "string") return "";
+  return value.trim();
+}
+
+function parseBooleanValue(value: FormDataEntryValue | null) {
+  return value === "true";
+}
+
+function validateAttachment(file: File | null) {
+  if (!file || file.size === 0) return null;
+
+  if (!SUPPORTED_ATTACHMENT_TYPES.has(file.type)) {
+    throw new Error(
+      "รองรับไฟล์แนบ PDF, JPG, JPEG, PNG, DOC, DOCX, XLS และ XLSX เท่านั้น",
+    );
+  }
+
+  if (file.size > ANNOUNCEMENT_MAX_FILE_SIZE) {
+    throw new Error("ไฟล์แนบต้องมีขนาดไม่เกิน 10MB");
+  }
+
+  return file;
+}
+
+function parseId(value: string) {
+  const id = Number(value);
+  if (Number.isNaN(id)) {
+    throw new Error("รหัสประกาศไม่ถูกต้อง");
+  }
+  return id;
+}
+
+function buildWorkflowMessage(comment: string | null, fallback: string) {
+  return comment ? `${fallback} หมายเหตุ: ${comment}` : fallback;
+}
+
+async function parseAnnouncementFormData(request: NextRequest) {
+  const formData = await request.formData();
+  const rawValues = {
+    title: String(formData.get("title") ?? ""),
+    content: String(formData.get("content") ?? ""),
+    startDate: normalizeDateValue(formData.get("startDate")),
+    endDate: normalizeDateValue(formData.get("endDate")) || undefined,
+    removeAttachment: parseBooleanValue(formData.get("removeAttachment")),
+  };
+
+  const parsedValues = announcementDraftSchema.safeParse(rawValues);
+  if (!parsedValues.success) {
+    throw new Error(
+      parsedValues.error.issues[0]?.message ?? "ข้อมูลประกาศไม่ถูกต้อง",
+    );
+  }
+
+  const parsedAction = announcementDraftActionSchema.safeParse(
+    String(formData.get("action") ?? "draft"),
+  );
+  if (!parsedAction.success) {
+    throw new Error("คำสั่งการบันทึกประกาศไม่ถูกต้อง");
+  }
+
+  return {
+    action: parsedAction.data,
+    values: parsedValues.data,
+    attachment: validateAttachment(formData.get("attachment") as File | null),
+  };
+}
+
+export async function GET(
+  _request: NextRequest,
+  context: { params: Promise<{ id: string }> },
+) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { id: rawId } = await context.params;
+    const id = parseId(rawId);
+
+    const row = await getAnnouncementByIdForAccess({
+      id,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions,
+    });
+
+    if (!row) {
+      return NextResponse.json({ message: "ไม่พบประกาศ" }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: "โหลดรายละเอียดประกาศเรียบร้อยแล้ว",
+      announcement: serializeAnnouncementForAccess({
+        row,
+        permissions: session.user.effectivePermissions,
+        currentUserId: session.user.id,
+      }),
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json(
+        { message: error.message },
+        { status: error.status },
+      );
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json(
+      { message: "ไม่สามารถโหลดรายละเอียดประกาศได้" },
+      { status: 500 },
+    );
+  }
+}
+
+export async function PATCH(
+  request: NextRequest,
+  context: { params: Promise<{ id: string }> },
+) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id: rawId } = await context.params;
+    const id = parseId(rawId);
+
+    const [existing] = await db
+      .select()
+      .from(announcements)
+      .where(
+        and(
+          eq(announcements.id, id),
+          eq(announcements.organizationId, organization.id),
+        ),
+      )
+      .limit(1);
+
+    if (!existing) {
+      return NextResponse.json({ message: "ไม่พบประกาศ" }, { status: 404 });
+    }
+
+    const permissions = session.user.effectivePermissions;
+    const isOwner = existing.createdBy === session.user.id;
+    const previousSerialized = serializeAnnouncementInternal({
+      ...existing,
+      createdByName: null,
+      updatedByName: null,
+    });
+
+    const contentType = request.headers.get("content-type") ?? "";
+    let nextStatus = existing.status;
+    let reviewComment = existing.reviewComment;
+    let multipartAction: "draft" | "submit" | null = null;
+    let successMessage = "อัปเดตประกาศเรียบร้อยแล้ว";
+
+    if (contentType.includes("multipart/form-data")) {
+      if (
+        !canEditContent({
+          module: "announcement",
+          permissions,
+          status: existing.status,
+          isOwner,
+        })
+      ) {
+        return NextResponse.json(
+          { message: "ไม่มีสิทธิ์แก้ไขประกาศในสถานะปัจจุบัน" },
+          { status: 403 },
+        );
+      }
+
+      const { action, values, attachment } =
+        await parseAnnouncementFormData(request);
+      multipartAction = action;
+
+      const canSubmitAgain = canTransitionContent({
+        module: "announcement",
+        action: "submit",
+        currentStatus: existing.status,
+        permissions,
+        isOwner,
+      });
+
+      if (action === "submit") {
+        if (!canSubmitAgain) {
+          return NextResponse.json(
+            { message: "ไม่มีสิทธิ์ส่งประกาศเพื่อตรวจสอบ" },
+            { status: 403 },
+          );
+        }
+
+        nextStatus = getNextContentStatus("submit");
+        successMessage = "ส่งประกาศเพื่อตรวจสอบเรียบร้อยแล้ว";
+      } else {
+        nextStatus = existing.status;
+        successMessage = canSubmitAgain
+          ? "บันทึกร่างประกาศเรียบร้อยแล้ว"
+          : "บันทึกการแก้ไขประกาศเรียบร้อยแล้ว";
+      }
+
+      await db
+        .update(announcements)
+        .set({
+          title: values.title.trim(),
+          content: values.content.trim(),
+          startDate: new Date(values.startDate),
+          endDate: values.endDate?.trim() ? new Date(values.endDate) : null,
+          status: nextStatus,
+          submittedAt: action === "submit" ? new Date() : existing.submittedAt,
+          submittedBy:
+            action === "submit" ? session.user.id : existing.submittedBy,
+          updatedBy: session.user.id,
+          updatedAt: new Date(),
+          ...(values.removeAttachment && !attachment
+            ? {
+                attachmentFileName: null,
+                attachmentFileType: null,
+                attachmentFileSize: null,
+                attachmentStorageKey: null,
+                attachmentFileUrl: null,
+              }
+            : {}),
+        })
+        .where(
+          and(
+            eq(announcements.id, id),
+            eq(announcements.organizationId, organization.id),
+          ),
+        );
+
+      if (
+        values.removeAttachment &&
+        !attachment &&
+        existing.attachmentStorageKey
+      ) {
+        await deleteStoredAnnouncementAttachment(existing.attachmentStorageKey);
+      }
+
+      if (attachment) {
+        const storedAttachment = await saveAnnouncementAttachment({
+          file: attachment,
+          organizationId: organization.id,
+          announcementId: id,
+        });
+
+        await db
+          .update(announcements)
+          .set({
+            attachmentFileName: storedAttachment.fileName,
+            attachmentFileType: storedAttachment.fileType,
+            attachmentFileSize: storedAttachment.fileSize,
+            attachmentStorageKey: storedAttachment.storageKey,
+            attachmentFileUrl: storedAttachment.fileUrl,
+            updatedBy: session.user.id,
+            updatedAt: new Date(),
+          })
+          .where(
+            and(
+              eq(announcements.id, id),
+              eq(announcements.organizationId, organization.id),
+            ),
+          );
+
+        if (existing.attachmentStorageKey) {
+          await deleteStoredAnnouncementAttachment(
+            existing.attachmentStorageKey,
+          );
+        }
+      }
+    } else {
+      const body = (await request.json()) as {
+        action?:
+          | "submit"
+          | "approve"
+          | "return"
+          | "reject"
+          | "publish"
+          | "archive";
+        status?:
+          | "draft"
+          | "pending_review"
+          | "approved"
+          | "published"
+          | "returned"
+          | "rejected"
+          | "archived";
+        comment?: string;
+      };
+
+      const normalizedAction =
+        body.action ??
+        (body.status === "pending_review"
+          ? "submit"
+          : body.status === "published"
+            ? "publish"
+            : body.status === "archived"
+              ? "archive"
+              : undefined);
+
+      if (normalizedAction === undefined) {
+        return NextResponse.json(
+          { message: "ไม่มีข้อมูลสำหรับอัปเดต" },
+          { status: 400 },
+        );
+      }
+
+      if (
+        normalizedAction &&
+        !canTransitionContent({
+          module: "announcement",
+          action: normalizedAction,
+          currentStatus: existing.status,
+          permissions,
+          isOwner,
+        })
+      ) {
+        return NextResponse.json(
+          { message: "ไม่สามารถเปลี่ยนสถานะประกาศได้" },
+          { status: 403 },
+        );
+      }
+
+      nextStatus = normalizedAction
+        ? getNextContentStatus(normalizedAction)
+        : existing.status;
+      reviewComment = body.comment?.trim() || existing.reviewComment;
+      successMessage =
+        normalizedAction === "publish"
+          ? "เผยแพร่ประกาศเรียบร้อยแล้ว"
+          : normalizedAction === "archive"
+            ? "ยกเลิกเผยแพร่ออกจากหน้าบ้านเรียบร้อยแล้ว"
+            : normalizedAction === "approve"
+              ? "อนุมัติประกาศเรียบร้อยแล้ว"
+              : normalizedAction === "return"
+                ? "ส่งประกาศกลับเพื่อแก้ไขเรียบร้อยแล้ว"
+                : normalizedAction === "reject"
+                  ? "ปฏิเสธประกาศเรียบร้อยแล้ว"
+                  : "อัปเดตประกาศเรียบร้อยแล้ว";
+
+      await db
+        .update(announcements)
+        .set({
+          status: nextStatus,
+          isPin: normalizedAction === "archive" ? false : existing.isPin,
+          submittedAt:
+            normalizedAction === "submit" ? new Date() : existing.submittedAt,
+          submittedBy:
+            normalizedAction === "submit"
+              ? session.user.id
+              : existing.submittedBy,
+          reviewedAt:
+            normalizedAction === "approve" ||
+            normalizedAction === "return" ||
+            normalizedAction === "reject"
+              ? new Date()
+              : existing.reviewedAt,
+          reviewedBy:
+            normalizedAction === "approve" ||
+            normalizedAction === "return" ||
+            normalizedAction === "reject"
+              ? session.user.id
+              : existing.reviewedBy,
+          approvedAt:
+            normalizedAction === "approve" ? new Date() : existing.approvedAt,
+          approvedBy:
+            normalizedAction === "approve"
+              ? session.user.id
+              : existing.approvedBy,
+          publishedAt:
+            normalizedAction === "publish"
+              ? (existing.publishedAt ?? new Date())
+              : existing.publishedAt,
+          publishedBy:
+            normalizedAction === "publish"
+              ? session.user.id
+              : existing.publishedBy,
+          reviewComment,
+          updatedBy: session.user.id,
+          updatedAt: new Date(),
+        })
+        .where(
+          and(
+            eq(announcements.id, id),
+            eq(announcements.organizationId, organization.id),
+          ),
+        );
+    }
+
+    const detailRow = await getAnnouncementByIdForAccess({
+      id,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions,
+    });
+
+    if (!detailRow) {
+      throw new Error("ไม่พบข้อมูลประกาศหลังอัปเดต");
+    }
+
+    const serializedAnnouncement = serializeAnnouncementInternal(detailRow);
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ANNOUNCEMENTS,
+      action: AUDIT_ACTION.ANNOUNCEMENT_UPDATE,
+      entityName: detailRow.title,
+      entityId: detailRow.id,
+      oldValue: toAuditValue(previousSerialized),
+      newValue: toAuditValue(serializedAnnouncement),
+      ...requestMetadata,
+    });
+
+    if (multipartAction === "draft") {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_DRAFT_SAVED,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+    }
+
+    if (
+      existing.status !== "pending_review" &&
+      nextStatus === "pending_review"
+    ) {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_SUBMIT,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+
+      const reviewerIds = await getAnnouncementReviewRecipientIds({
+        organizationId: organization.id,
+        excludeUserIds: [session.user.id],
+      });
+
+      await Promise.all(
+        reviewerIds.map((userId) =>
+          createContentWorkflowNotification({
+            organizationId: organization.id,
+            userId,
+            title: `มีประกาศใหม่รอตรวจสอบ: ${detailRow.title}`,
+            message:
+              "มีการส่งประกาศเข้าสู่คิวตรวจสอบ กรุณาเปิดเพื่อตรวจสอบและอนุมัติ",
+            type: "CONTENT_SUBMITTED",
+            referenceId: detailRow.id,
+            referenceType: "content_submission",
+          }),
+        ),
+      );
+    }
+
+    if (existing.status !== "approved" && nextStatus === "approved") {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `ประกาศได้รับการอนุมัติ: ${detailRow.title}`,
+        message: buildWorkflowMessage(
+          reviewComment,
+          "ประกาศของคุณผ่านการอนุมัติแล้ว",
+        ),
+        type: "CONTENT_APPROVED",
+        referenceId: detailRow.id,
+        referenceType: "content_approval",
+      });
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_APPROVE,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+    }
+
+    if (existing.status !== "returned" && nextStatus === "returned") {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `ประกาศถูกส่งกลับแก้ไข: ${detailRow.title}`,
+        message: buildWorkflowMessage(
+          reviewComment,
+          "กรุณาปรับแก้และส่งตรวจสอบอีกครั้ง",
+        ),
+        type: "CONTENT_RETURNED",
+        referenceId: detailRow.id,
+        referenceType: "content_approval",
+      });
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_RETURN,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+    }
+
+    if (existing.status !== "rejected" && nextStatus === "rejected") {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `ประกาศไม่ผ่านการอนุมัติ: ${detailRow.title}`,
+        message: buildWorkflowMessage(reviewComment, "กรุณาปรับแก้ก่อนส่งใหม่"),
+        type: "CONTENT_REJECTED",
+        referenceId: detailRow.id,
+        referenceType: "content_approval",
+      });
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_REJECT,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+    }
+
+    if (existing.status !== "published" && nextStatus === "published") {
+      const userIds = await getOrganizationAnnouncementRecipientIds(
+        organization.id,
+      );
+
+      await createAnnouncementNotification({
+        organizationId: organization.id,
+        userIds,
+        title: `ประกาศใหม่: ${detailRow.title}`,
+        message: "มีประกาศใหม่เผยแพร่แล้ว กรุณาเปิดอ่านรายละเอียด",
+        referenceId: detailRow.id,
+      });
+
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `ประกาศถูกเผยแพร่แล้ว: ${detailRow.title}`,
+        message: "ประกาศของคุณถูกเผยแพร่เรียบร้อยแล้ว",
+        type: "CONTENT_PUBLISHED",
+        referenceId: detailRow.id,
+        referenceType: "content_published",
+      });
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_PUBLISH,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+    }
+
+    if (existing.status !== "archived" && nextStatus === "archived") {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ANNOUNCEMENTS,
+        action: AUDIT_ACTION.ANNOUNCEMENT_ARCHIVE,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedAnnouncement),
+        ...requestMetadata,
+      });
+    }
+
+    const responseAnnouncement = serializeAnnouncementForAccess({
+      row: detailRow,
+      permissions: session.user.effectivePermissions,
+      currentUserId: session.user.id,
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: successMessage,
+      announcement: responseAnnouncement,
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json(
+        { message: error.message },
+        { status: error.status },
+      );
+    }
+
+    if (error instanceof Error && !error.message.includes("Database")) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    console.error("Failed to update announcement", error);
+    return NextResponse.json(
+      { message: getDatabaseErrorMessage(error) },
+      { status: 500 },
+    );
+  }
+}
+
+export async function DELETE(
+  request: NextRequest,
+  context: { params: Promise<{ id: string }> },
+) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id: rawId } = await context.params;
+    const id = parseId(rawId);
+
+    const [existing] = await db
+      .select()
+      .from(announcements)
+      .where(
+        and(
+          eq(announcements.id, id),
+          eq(announcements.organizationId, organization.id),
+        ),
+      )
+      .limit(1);
+
+    if (!existing) {
+      return NextResponse.json({ message: "ไม่พบประกาศ" }, { status: 404 });
+    }
+
+    if (
+      !canDeleteContent({
+        module: "announcement",
+        permissions: session.user.effectivePermissions,
+        status: existing.status,
+        isOwner: existing.createdBy === session.user.id,
+      })
+    ) {
+      return NextResponse.json(
+        { message: "ไม่มีสิทธิ์ยกเลิกเผยแพร่นี้" },
+        { status: 403 },
+      );
+    }
+
+    await db
+      .delete(announcements)
+      .where(
+        and(
+          eq(announcements.id, id),
+          eq(announcements.organizationId, organization.id),
+        ),
+      );
+
+    if (existing.attachmentStorageKey) {
+      await deleteStoredAnnouncementAttachment(existing.attachmentStorageKey);
+    }
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ANNOUNCEMENTS,
+      action: AUDIT_ACTION.ANNOUNCEMENT_DELETE,
+      entityName: existing.title,
+      entityId: existing.id,
+      oldValue: toAuditValue(
+        serializeAnnouncementInternal({
+          ...existing,
+          createdByName: null,
+          updatedByName: null,
+        }),
+      ),
+      newValue: null,
+      ...requestMetadata,
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: "ยกเลิกเผยแพร่เรียบร้อยแล้ว",
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json(
+        { message: error.message },
+        { status: error.status },
+      );
+    }
+
+    if (error instanceof Error && !error.message.includes("Database")) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    console.error("Failed to delete announcement", error);
+    return NextResponse.json(
+      { message: getDatabaseErrorMessage(error) },
+      { status: 500 },
+    );
+  }
+}

src/app/api/announcements/[id]/unpin/route.ts

@@ -0,0 +1,108 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { announcements } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  getAnnouncementByIdForAccess,
+  serializeAnnouncementInternal
+} from '@/features/announcements/server/announcement-data';
+import { hasPermission } from '@/lib/auth/authorization';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+function parseId(value: string) {
+  const id = Number(value);
+
+  if (Number.isNaN(id)) {
+    throw new Error('รหัสประกาศไม่ถูกต้อง');
+  }
+
+  return id;
+}
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+
+    if (!hasPermission(session.user.effectivePermissions, 'announcement:publish')) {
+      return NextResponse.json(
+        { message: 'คุณไม่มีสิทธิ์จัดการการปักหมุดประกาศ' },
+        { status: 403 }
+      );
+    }
+
+    const { id } = await params;
+    const announcementId = parseId(id);
+    const requestMetadata = getRequestMetadata(request);
+    const existing = await getAnnouncementByIdForAccess({
+      id: announcementId,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!existing) {
+      return NextResponse.json({ message: 'ไม่พบประกาศ' }, { status: 404 });
+    }
+
+    if (!existing.isPin) {
+      return NextResponse.json({
+        success: true,
+        message: 'ยกเลิกการปักหมุดเรียบร้อยแล้ว'
+      });
+    }
+
+    await db
+      .update(announcements)
+      .set({
+        isPin: false,
+        updatedBy: session.user.id,
+        updatedAt: new Date()
+      })
+      .where(and(eq(announcements.id, announcementId), eq(announcements.organizationId, organization.id)));
+
+    const updated = await getAnnouncementByIdForAccess({
+      id: announcementId,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!updated) {
+      throw new Error('ไม่พบข้อมูลประกาศหลังยกเลิกการปักหมุด');
+    }
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ANNOUNCEMENTS,
+      action: AUDIT_ACTION.ANNOUNCEMENT_UNPINNED,
+      entityName: updated.title,
+      entityId: updated.id,
+      oldValue: toAuditValue(serializeAnnouncementInternal(existing)),
+      newValue: toAuditValue(serializeAnnouncementInternal(updated)),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'ยกเลิกการปักหมุดเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถยกเลิกการปักหมุดได้' }, { status: 500 });
+  }
+}

src/app/api/announcements/route.ts

@@ -0,0 +1,292 @@
+import { eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { announcements } from '@/db/schema';
+import {
+  canCreateContent,
+  canTransitionContent,
+  getNextContentStatus
+} from '@/features/content-approval/lib/workflow';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  getAnnouncementReviewRecipientIds,
+  listAnnouncementsForAccess,
+  serializeAnnouncementForAccess,
+  serializeAnnouncementInternal
+} from '@/features/announcements/server/announcement-data';
+import {
+  announcementDraftActionSchema,
+  announcementDraftSchema
+} from '@/features/announcements/schemas/announcement';
+import { createContentWorkflowNotification } from '@/features/notifications/server/notification-service';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import {
+  ANNOUNCEMENT_MAX_FILE_SIZE,
+  saveAnnouncementAttachment
+} from '@/lib/announcement-storage';
+import { getDatabaseErrorMessage } from '@/lib/db-errors';
+import { db } from '@/lib/db';
+
+const SUPPORTED_ATTACHMENT_TYPES = new Set([
+  'application/pdf',
+  'image/jpeg',
+  'image/png',
+  'application/msword',
+  'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+  'application/vnd.ms-excel',
+  'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+]);
+
+function normalizeDateValue(value: FormDataEntryValue | null) {
+  if (typeof value !== 'string') return '';
+  return value.trim();
+}
+
+function parseBooleanValue(value: FormDataEntryValue | null) {
+  return value === 'true';
+}
+
+function validateAttachment(file: File | null) {
+  if (!file || file.size === 0) return null;
+
+  if (!SUPPORTED_ATTACHMENT_TYPES.has(file.type)) {
+    throw new Error('รองรับไฟล์แนบ PDF, JPG, JPEG, PNG, DOC, DOCX, XLS และ XLSX เท่านั้น');
+  }
+
+  if (file.size > ANNOUNCEMENT_MAX_FILE_SIZE) {
+    throw new Error('ไฟล์แนบต้องมีขนาดไม่เกิน 10MB');
+  }
+
+  return file;
+}
+
+async function parseAnnouncementFormData(request: NextRequest) {
+  const formData = await request.formData();
+  const rawValues = {
+    title: String(formData.get('title') ?? ''),
+    content: String(formData.get('content') ?? ''),
+    startDate: normalizeDateValue(formData.get('startDate')),
+    endDate: normalizeDateValue(formData.get('endDate')) || undefined,
+    removeAttachment: parseBooleanValue(formData.get('removeAttachment'))
+  };
+
+  const parsedValues = announcementDraftSchema.safeParse(rawValues);
+  if (!parsedValues.success) {
+    throw new Error(parsedValues.error.issues[0]?.message ?? 'ข้อมูลประกาศไม่ถูกต้อง');
+  }
+
+  const parsedAction = announcementDraftActionSchema.safeParse(
+    String(formData.get('action') ?? 'draft')
+  );
+  if (!parsedAction.success) {
+    throw new Error('คำสั่งการบันทึกประกาศไม่ถูกต้อง');
+  }
+
+  return {
+    action: parsedAction.data,
+    values: parsedValues.data,
+    attachment: validateAttachment(formData.get('attachment') as File | null)
+  };
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { searchParams } = request.nextUrl;
+
+    const result = await listAnnouncementsForAccess({
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions,
+      currentUserId: session.user.id,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        search: searchParams.get('search') ?? undefined,
+        status: (searchParams.get('status') as
+          | 'draft'
+          | 'pending_review'
+          | 'approved'
+          | 'published'
+          | 'returned'
+          | 'rejected'
+          | 'archived'
+          | null) ?? undefined,
+        pin: (searchParams.get('pin') as 'all' | 'pinned' | null) ?? undefined,
+        sort: searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดประกาศเรียบร้อยแล้ว',
+      total_announcements: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      announcements: result.announcements
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดประกาศได้' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { action, values, attachment } = await parseAnnouncementFormData(request);
+    const permissions = session.user.effectivePermissions;
+
+    if (!canCreateContent('announcement', permissions)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const wantsSubmit = action === 'submit';
+
+    if (
+      wantsSubmit &&
+      !canTransitionContent({
+        module: 'announcement',
+        action: 'submit',
+        currentStatus: 'draft',
+        permissions,
+        isOwner: true
+      })
+    ) {
+      return NextResponse.json({ message: 'ไม่มีสิทธิ์ส่งประกาศเพื่อตรวจสอบ' }, { status: 403 });
+    }
+
+    const initialStatus = wantsSubmit ? getNextContentStatus('submit') : 'draft';
+
+    const [created] = await db
+      .insert(announcements)
+      .values({
+        organizationId: organization.id,
+        title: values.title.trim(),
+        content: values.content.trim(),
+        startDate: new Date(values.startDate),
+        endDate: values.endDate?.trim() ? new Date(values.endDate) : null,
+        isPin: false,
+        status: initialStatus,
+        submittedAt: wantsSubmit ? new Date() : null,
+        submittedBy: wantsSubmit ? session.user.id : null,
+        createdBy: session.user.id,
+        updatedBy: session.user.id
+      })
+      .returning();
+
+    let record = created;
+
+    if (attachment) {
+      const storedAttachment = await saveAnnouncementAttachment({
+        file: attachment,
+        organizationId: organization.id,
+        announcementId: created.id
+      });
+
+      [record] = await db
+        .update(announcements)
+        .set({
+          attachmentFileName: storedAttachment.fileName,
+          attachmentFileType: storedAttachment.fileType,
+          attachmentFileSize: storedAttachment.fileSize,
+          attachmentStorageKey: storedAttachment.storageKey,
+          attachmentFileUrl: storedAttachment.fileUrl,
+          updatedBy: session.user.id,
+          updatedAt: new Date()
+        })
+        .where(eq(announcements.id, created.id))
+        .returning();
+    }
+
+    const creatorName = session.user.name ?? session.user.email ?? null;
+    const announcementRow = {
+      ...record,
+      createdByName: creatorName,
+      updatedByName: creatorName
+    };
+    const auditAnnouncement = serializeAnnouncementInternal(announcementRow);
+    const responseAnnouncement = serializeAnnouncementForAccess({
+      row: announcementRow,
+      permissions,
+      currentUserId: session.user.id
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ANNOUNCEMENTS,
+      action: AUDIT_ACTION.ANNOUNCEMENT_CREATE,
+      entityName: record.title,
+      entityId: record.id,
+      newValue: toAuditValue(auditAnnouncement),
+      ...requestMetadata
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ANNOUNCEMENTS,
+      action: wantsSubmit
+        ? AUDIT_ACTION.ANNOUNCEMENT_SUBMIT
+        : AUDIT_ACTION.ANNOUNCEMENT_DRAFT_SAVED,
+      entityName: record.title,
+      entityId: record.id,
+      newValue: toAuditValue(auditAnnouncement),
+      ...requestMetadata
+    });
+
+    if (wantsSubmit) {
+      const reviewerIds = await getAnnouncementReviewRecipientIds({
+        organizationId: organization.id,
+        excludeUserIds: [session.user.id]
+      });
+
+      await Promise.all(
+        reviewerIds.map((userId) =>
+          createContentWorkflowNotification({
+            organizationId: organization.id,
+            userId,
+            title: `มีประกาศใหม่รอตรวจสอบ: ${record.title}`,
+            message: 'มีการส่งประกาศเข้าสู่คิวตรวจสอบ กรุณาเปิดเพื่อตรวจสอบและอนุมัติ',
+            type: 'CONTENT_SUBMITTED',
+            referenceId: record.id,
+            referenceType: 'content_submission'
+          })
+        )
+      );
+    }
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: wantsSubmit
+          ? 'ส่งประกาศเพื่อตรวจสอบเรียบร้อยแล้ว'
+          : 'บันทึกร่างประกาศเรียบร้อยแล้ว',
+        announcement: responseAnnouncement
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && !error.message.includes('Database')) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    console.error('Failed to create announcement', error);
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}

src/app/api/audit-logs/export/route.ts

@@ -0,0 +1,64 @@
+import { NextRequest, NextResponse } from 'next/server';
+import {
+  getAuditActionLabel,
+  getAuditModuleLabel
+} from '@/features/audit-logs/constants/audit-log-options';
+import { auditLogFilterSchema } from '@/features/audit-logs/schemas/audit-log';
+import { listAuditLogsForOrganization } from '@/features/audit-logs/server/audit-log-data';
+import { AuthError, requireIT } from '@/lib/auth/session';
+
+function escapeCsvCell(value: string) {
+  return `"${value.replaceAll('"', '""')}"`;
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireIT();
+    const filters = auditLogFilterSchema.parse({
+      page: 1,
+      limit: 1000,
+      search: request.nextUrl.searchParams.get('search') ?? undefined,
+      user: request.nextUrl.searchParams.get('user') ?? undefined,
+      module: request.nextUrl.searchParams.get('module') ?? undefined,
+      action: request.nextUrl.searchParams.get('action') ?? undefined,
+      dateFrom: request.nextUrl.searchParams.get('dateFrom') ?? undefined,
+      dateTo: request.nextUrl.searchParams.get('dateTo') ?? undefined
+    });
+
+    const result = await listAuditLogsForOrganization({
+      organizationId: organization.id,
+      filters
+    });
+
+    const rows = [
+      ['วันที่', 'ผู้ใช้งาน', 'อีเมล', 'โมดูล', 'รายการ', 'รายละเอียด', 'IP'],
+      ...result.auditLogs.map((log) => [
+        new Intl.DateTimeFormat('th-TH', {
+          dateStyle: 'medium',
+          timeStyle: 'short'
+        }).format(new Date(log.created_at)),
+        log.user_name ?? 'ระบบ',
+        log.user_email ?? '',
+        getAuditModuleLabel(log.module_name),
+        getAuditActionLabel(log.action),
+        log.details,
+        log.ip_address ?? ''
+      ])
+    ];
+
+    const csv = rows.map((row) => row.map((cell) => escapeCsvCell(String(cell))).join(',')).join('\n');
+
+    return new NextResponse(`\uFEFF${csv}`, {
+      headers: {
+        'Content-Type': 'text/csv; charset=utf-8',
+        'Content-Disposition': 'attachment; filename="audit-logs.csv"'
+      }
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถส่งออกประวัติการใช้งานได้' }, { status: 500 });
+  }
+}

src/app/api/audit-logs/route.ts

@@ -0,0 +1,42 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { auditLogFilterSchema } from '@/features/audit-logs/schemas/audit-log';
+import { listAuditLogsForOrganization } from '@/features/audit-logs/server/audit-log-data';
+import { AuthError, requireIT } from '@/lib/auth/session';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireIT();
+    const filters = auditLogFilterSchema.parse({
+      page: request.nextUrl.searchParams.get('page') ?? undefined,
+      limit: request.nextUrl.searchParams.get('limit') ?? undefined,
+      search: request.nextUrl.searchParams.get('search') ?? undefined,
+      user: request.nextUrl.searchParams.get('user') ?? undefined,
+      module: request.nextUrl.searchParams.get('module') ?? undefined,
+      action: request.nextUrl.searchParams.get('action') ?? undefined,
+      dateFrom: request.nextUrl.searchParams.get('dateFrom') ?? undefined,
+      dateTo: request.nextUrl.searchParams.get('dateTo') ?? undefined,
+      sort: request.nextUrl.searchParams.get('sort') ?? undefined
+    });
+
+    const result = await listAuditLogsForOrganization({
+      organizationId: organization.id,
+      filters
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดประวัติการใช้งานเรียบร้อยแล้ว',
+      total_audit_logs: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      audit_logs: result.auditLogs
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดประวัติการใช้งานได้' }, { status: 500 });
+  }
+}

src/app/api/auth/[...nextauth]/route.ts

@@ -0,0 +1,6 @@
+import { handlers } from '@/auth';
+
+export const runtime = 'nodejs';
+export const dynamic = 'force-dynamic';
+
+export const { GET, POST } = handlers;

src/app/api/auth/register/route.ts

@@ -0,0 +1,12 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+export async function POST(request: NextRequest) {
+  await request.json().catch(() => null);
+
+  return NextResponse.json(
+    {
+      message: 'Self-service sign-up is disabled. Please contact your administrator.'
+    },
+    { status: 403 }
+  );
+}

src/app/api/courses/[id]/route.ts

@@ -0,0 +1,149 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { courses } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import type { CourseMutationPayload } from '@/features/courses/api/types';
+import {
+  getCourseByIdForOrganization,
+  normalizeCoursePayload,
+  serializeCourse
+} from '@/features/courses/server/course-data';
+import { AuthError, requireHRD } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function GET(request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requireHRD();
+    const { id } = await params;
+
+    const course = await getCourseByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id
+    });
+
+    if (!course) {
+      return NextResponse.json(
+        { success: false, message: `Course with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: `Course with ID ${id} found`,
+      course: serializeCourse(course)
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load course' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requireHRD();
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const body = normalizeCoursePayload((await request.json()) as CourseMutationPayload);
+
+    const existingCourse = await getCourseByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id
+    });
+
+    if (!existingCourse) {
+      return NextResponse.json(
+        { success: false, message: `Course with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    const [course] = await db
+      .update(courses)
+      .set({
+        courseCode: body.courseCode,
+        name: body.name,
+        category: body.category,
+        organizer: body.organizer,
+        standardHours: body.standardHours,
+        certificateValidityMonths: body.certificateValidityMonths,
+        isRequired: body.isRequired,
+        certificateRequired: existingCourse.certificateRequired,
+        trainingCost: body.trainingCost,
+        description: body.description,
+        isActive: body.isActive,
+        updatedAt: new Date()
+      })
+      .where(and(eq(courses.id, Number(id)), eq(courses.organizationId, organization.id)))
+      .returning();
+
+    const serializedCourse = serializeCourse(course);
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.COURSE_MASTER,
+      action: AUDIT_ACTION.UPDATE,
+      entityName: course.name,
+      entityId: course.id,
+      oldValue: toAuditValue(serializeCourse(existingCourse)),
+      newValue: toAuditValue(serializedCourse),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Course updated successfully',
+      course: serializedCourse
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to update course' }, { status: 500 });
+  }
+}
+
+export async function DELETE(request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requireHRD();
+    const { id } = await params;
+
+    const [deletedCourse] = await db
+      .delete(courses)
+      .where(and(eq(courses.id, Number(id)), eq(courses.organizationId, organization.id)))
+      .returning({ id: courses.id });
+
+    if (!deletedCourse) {
+      return NextResponse.json(
+        { success: false, message: `Course with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: 'Course deleted successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to delete course' }, { status: 500 });
+  }
+}

src/app/api/courses/route.ts

@@ -0,0 +1,129 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { courses } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import type { CourseMutationPayload } from '@/features/courses/api/types';
+import {
+  listCoursesForOrganization,
+  normalizeCoursePayload,
+  serializeCourse
+} from '@/features/courses/server/course-data';
+import { isHRD } from '@/lib/auth/roles';
+import { AuthError, requireHRD, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+function getSingleFilterParam(
+  searchParams: URLSearchParams,
+  primaryKey: string,
+  legacyKey?: string
+) {
+  const rawValue = searchParams.get(primaryKey) ?? (legacyKey ? searchParams.get(legacyKey) : null);
+  const normalized = rawValue
+    ?.split(/[.,]/)
+    .map((value) => value.trim())
+    .find(Boolean);
+
+  return normalized && normalized !== 'all' ? normalized : undefined;
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const access = await requireOrganizationAccess();
+    const { searchParams } = request.nextUrl;
+    const canManageCourses = isHRD({
+      businessRole: access.session.user.businessRole,
+      systemRole: access.session.user.systemRole,
+      membershipRole: access.membership.role,
+      role: access.session.user.role
+    });
+    const requestedStatus = getSingleFilterParam(searchParams, 'status', 'statuses');
+
+    const result = await listCoursesForOrganization({
+      organizationId: access.organization.id,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        search: searchParams.get('search') ?? undefined,
+        category: getSingleFilterParam(searchParams, 'category', 'categories'),
+        status: canManageCourses ? requestedStatus : 'active',
+        sort: searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดหลักสูตรเรียบร้อยแล้ว',
+      total_courses: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      courses: result.courses
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดหลักสูตรได้' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireHRD();
+    const requestMetadata = getRequestMetadata(request);
+    const body = normalizeCoursePayload((await request.json()) as CourseMutationPayload);
+
+    const [course] = await db
+      .insert(courses)
+      .values({
+        organizationId: organization.id,
+        courseCode: body.courseCode,
+        name: body.name,
+        category: body.category,
+        organizer: body.organizer,
+        standardHours: body.standardHours,
+        certificateValidityMonths: body.certificateValidityMonths,
+        isRequired: body.isRequired,
+        certificateRequired: true,
+        trainingCost: body.trainingCost,
+        description: body.description,
+        isActive: body.isActive
+      })
+      .returning();
+
+    const serializedCourse = serializeCourse(course);
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.COURSE_MASTER,
+      action: AUDIT_ACTION.CREATE,
+      entityName: course.name,
+      entityId: course.id,
+      newValue: toAuditValue(serializedCourse),
+      ...requestMetadata
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: 'สร้างหลักสูตรเรียบร้อยแล้ว',
+        course: serializedCourse
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถสร้างหลักสูตรได้' }, { status: 500 });
+  }
+}

src/app/api/employee-directory/[id]/target/route.ts

@@ -0,0 +1,107 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import { AuthError, requireHRD } from '@/lib/auth/session';
+import {
+  getEmployeeTargetForOrganization,
+  upsertEmployeeTargetForOrganization
+} from '@/features/employee-directory/server/employee-directory-data';
+
+const targetSchema = z
+  .object({
+    year: z.number().int().min(2000),
+    totalHours: z.number().min(0),
+    kHours: z.number().min(0),
+    sHours: z.number().min(0),
+    aHours: z.number().min(0)
+  })
+  .refine((value) => Number((value.kHours + value.sHours + value.aHours).toFixed(2)) === Number(value.totalHours.toFixed(2)), {
+    message: 'ผลรวม K/S/A ต้องเท่ากับชั่วโมงรวม',
+    path: ['totalHours']
+  });
+
+export async function GET(
+  request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization } = await requireHRD();
+    const params = await context.params;
+    const employeeId = Number(params.id);
+    const year = Number(request.nextUrl.searchParams.get('year') ?? new Date().getUTCFullYear());
+
+    const target = await getEmployeeTargetForOrganization({
+      organizationId: organization.id,
+      employeeId,
+      year
+    });
+
+    if (!target) {
+      return NextResponse.json({ message: 'Employee not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee target loaded successfully',
+      target
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load employee target' }, { status: 500 });
+  }
+}
+
+export async function PUT(
+  request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization, session } = await requireHRD();
+    const params = await context.params;
+    const employeeId = Number(params.id);
+    const body = await request.json();
+    const parsed = targetSchema.safeParse({
+      year: Number(body.year),
+      totalHours: Number(body.totalHours),
+      kHours: Number(body.kHours),
+      sHours: Number(body.sHours),
+      aHours: Number(body.aHours)
+    });
+
+    if (!parsed.success) {
+      return NextResponse.json(
+        {
+          message: parsed.error.issues[0]?.message ?? 'Invalid target payload'
+        },
+        { status: 400 }
+      );
+    }
+
+    const target = await upsertEmployeeTargetForOrganization({
+      organizationId: organization.id,
+      employeeId,
+      actorUserId: session.user.id,
+      values: parsed.data
+    });
+
+    if (!target) {
+      return NextResponse.json({ message: 'Employee not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee target updated successfully',
+      target
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to update employee target' }, { status: 500 });
+  }
+}

src/app/api/employee-directory/route.ts

@@ -0,0 +1,40 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { AuthError, requireHRD } from '@/lib/auth/session';
+import { listEmployeeDirectoryForOrganization } from '@/features/employee-directory/server/employee-directory-data';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireHRD();
+    const { searchParams } = request.nextUrl;
+    const result = await listEmployeeDirectoryForOrganization({
+      organizationId: organization.id,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        search: searchParams.get('search') ?? undefined,
+        company: searchParams.get('company') ?? undefined,
+        department: searchParams.get('department') ?? undefined,
+        position: searchParams.get('position') ?? undefined,
+        status: searchParams.get('status') ?? undefined,
+        sort: searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee directory loaded successfully',
+      total_employees: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      employees: result.employees,
+      options: result.options
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load employee directory' }, { status: 500 });
+  }
+}

src/app/api/employees/[id]/route.ts

@@ -0,0 +1,100 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { getDatabaseErrorMessage } from '@/lib/db-errors';
+import {
+  getEmployeeByIdForOrganization,
+  softDeleteEmployeeForOrganization,
+  updateEmployeeForOrganization
+} from '@/features/employees/server/employee-data';
+import type { EmployeeMutationPayload } from '@/features/employees/api/types';
+
+export async function GET(
+  _request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const params = await context.params;
+    const employee = await getEmployeeByIdForOrganization({
+      id: Number(params.id),
+      organizationId: organization.id
+    });
+
+    if (!employee) {
+      return NextResponse.json({ message: 'Employee not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee loaded successfully',
+      employee
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}
+
+export async function PATCH(
+  request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const params = await context.params;
+    const body = (await request.json()) as EmployeeMutationPayload;
+    const employee = await updateEmployeeForOrganization({
+      id: Number(params.id),
+      organizationId: organization.id,
+      payload: body
+    });
+
+    if (!employee) {
+      return NextResponse.json({ message: 'Employee not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee updated successfully',
+      employee
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}
+
+export async function DELETE(
+  _request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const params = await context.params;
+
+    await softDeleteEmployeeForOrganization({
+      id: Number(params.id),
+      organizationId: organization.id
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee deactivated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}

src/app/api/employees/route.ts

@@ -0,0 +1,77 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { getDatabaseErrorMessage } from '@/lib/db-errors';
+import {
+  createEmployeeForOrganization,
+  getEmployeeOptionsForOrganization,
+  listEmployeesForOrganization
+} from '@/features/employees/server/employee-data';
+import type { EmployeeMutationPayload } from '@/features/employees/api/types';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const mode = request.nextUrl.searchParams.get('mode');
+
+    if (mode === 'options') {
+      const employees = await getEmployeeOptionsForOrganization(organization.id);
+      return NextResponse.json({ employees });
+    }
+
+    const { searchParams } = request.nextUrl;
+    const result = await listEmployeesForOrganization({
+      organizationId: organization.id,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        search: searchParams.get('search') ?? undefined,
+        statuses: searchParams.get('statuses') ?? undefined,
+        sort: searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employees loaded successfully',
+      total_employees: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      employees: result.employees
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const body = (await request.json()) as EmployeeMutationPayload;
+    const employee = await createEmployeeForOrganization({
+      organizationId: organization.id,
+      payload: body
+    });
+
+    if (!employee) {
+      return NextResponse.json({ message: 'Unable to create employee' }, { status: 400 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Employee created successfully',
+      employee
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}

src/app/api/import-employees/route.ts

@@ -0,0 +1,782 @@
+import { and, eq, sql } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import * as XLSX from 'xlsx';
+import { departments, importJobs, organizations, positions, trainingRecords } from '@/db/schema';
+import {
+  normalizeImportedStatus,
+  thaiImportEmployeeHeaders,
+  thaiImportTemplateHeaders,
+  thaiImportTrainingHeaders,
+  thaiTrainingTypeLabels
+} from '@/constants/thai-labels';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  findEmployeeByCodeForOrganization,
+  syncUsersForEmployeeCode,
+  upsertEmployeeMasterFromImport
+} from '@/features/employees/server/employee-identity-linking';
+import { createImportCompletedNotification } from '@/features/notifications/server/notification-service';
+import {
+  normalizeTrainingTypeForDb,
+  type LegacyTrainingType
+} from '@/features/training-records/constants/training-record-options';
+import { isMissingTrainingRecordMinutesStorage } from '@/features/training-records/server/training-record-data';
+import { decimalHoursToMinutes } from '@/features/training-records/utils/time-utils';
+import { AuthError, requireHRD } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type ImportedTrainingRecordInput = {
+  courseName: string;
+  category: 'K' | 'S' | 'A';
+  hours: number;
+  trainingType: LegacyTrainingType;
+  trainingDate: Date;
+};
+
+type EmployeeImportGroup = {
+  employeeCode: string;
+  employeeName: string;
+  email: string;
+  company: string;
+  department: string;
+  position: string;
+  status: string;
+  rowNumbers: number[];
+  trainingRecords: Array<{
+    rowNumber: number;
+    data: ImportedTrainingRecordInput;
+  }>;
+};
+
+type ImportError = {
+  row: number;
+  message: string;
+  employee_code?: string;
+};
+
+const EMPLOYEE_HEADERS = {
+  employeeCode: thaiImportEmployeeHeaders[0],
+  employeeName: thaiImportEmployeeHeaders[1],
+  email: thaiImportEmployeeHeaders[2],
+  company: thaiImportEmployeeHeaders[3],
+  department: thaiImportEmployeeHeaders[4],
+  position: thaiImportEmployeeHeaders[5],
+  status: thaiImportEmployeeHeaders[6]
+} as const;
+
+const TRAINING_HEADERS = {
+  courseName: thaiImportTrainingHeaders[0],
+  category: thaiImportTrainingHeaders[1],
+  hours: thaiImportTrainingHeaders[2],
+  trainingType: thaiImportTrainingHeaders[3],
+  trainingDate: thaiImportTrainingHeaders[4]
+} as const;
+
+const allowedTrainingTypeKeys = new Set([
+  'INTERNAL_TRAINING',
+  'EXTERNAL_TRAINING',
+  'ONLINE_COURSE',
+  'OJT',
+  'internal',
+  'external',
+  'online',
+  'onsite'
+]);
+
+function rowError(row: number, message: string, employeeCode?: string): ImportError {
+  return { row, message, employee_code: employeeCode };
+}
+
+function normalizeText(value: unknown) {
+  return String(value ?? '').trim();
+}
+
+function normalizeComparableText(value: string) {
+  return value.trim().toLowerCase();
+}
+
+function parseImportYear(value: FormDataEntryValue | null) {
+  const currentYear = new Date().getUTCFullYear();
+  const rawValue = typeof value === 'string' ? value.trim() : '';
+
+  if (!rawValue) {
+    return currentYear;
+  }
+
+  const parsedYear = Number(rawValue);
+  if (!Number.isFinite(parsedYear)) {
+    return currentYear;
+  }
+
+  return parsedYear >= 2400 ? parsedYear - 543 : parsedYear;
+}
+
+function parseOptionalNumber(value: unknown) {
+  const normalized = normalizeText(value);
+
+  if (!normalized) {
+    return null;
+  }
+
+  const parsed = Number(normalized.replaceAll(',', ''));
+  return Number.isFinite(parsed) ? parsed : Number.NaN;
+}
+
+function normalizeImportedCalendarYear(year: number) {
+  return year >= 2400 ? year - 543 : year;
+}
+
+function createDefaultTrainingDate(importYear: number) {
+  return new Date(Date.UTC(importYear, 0, 1));
+}
+
+function parseImportedTrainingDate(value: unknown, importYear: number) {
+  if (value instanceof Date && Number.isFinite(value.getTime())) {
+    return new Date(Date.UTC(value.getFullYear(), value.getMonth(), value.getDate()));
+  }
+
+  if (typeof value === 'number' && Number.isFinite(value)) {
+    const parsed = XLSX.SSF.parse_date_code(value);
+
+    if (parsed) {
+      return new Date(Date.UTC(parsed.y, parsed.m - 1, parsed.d));
+    }
+  }
+
+  const normalized = normalizeText(value);
+
+  if (!normalized) {
+    return createDefaultTrainingDate(importYear);
+  }
+
+  const isoMatch = normalized.match(/^(\d{4})[-/](\d{1,2})[-/](\d{1,2})$/);
+  if (isoMatch) {
+    const year = normalizeImportedCalendarYear(Number(isoMatch[1]));
+    const month = Number(isoMatch[2]);
+    const day = Number(isoMatch[3]);
+    const parsedDate = new Date(Date.UTC(year, month - 1, day));
+
+    if (Number.isFinite(parsedDate.getTime())) {
+      return parsedDate;
+    }
+  }
+
+  const localMatch = normalized.match(/^(\d{1,2})[-/](\d{1,2})[-/](\d{2,4})$/);
+  if (localMatch) {
+    const day = Number(localMatch[1]);
+    const month = Number(localMatch[2]);
+    const rawYear = Number(localMatch[3]);
+    const year = normalizeImportedCalendarYear(rawYear < 100 ? rawYear + 2000 : rawYear);
+    const parsedDate = new Date(Date.UTC(year, month - 1, day));
+
+    if (Number.isFinite(parsedDate.getTime())) {
+      return parsedDate;
+    }
+  }
+
+  const parsedByRuntime = new Date(normalized);
+  if (Number.isFinite(parsedByRuntime.getTime())) {
+    return new Date(
+      Date.UTC(
+        parsedByRuntime.getUTCFullYear(),
+        parsedByRuntime.getUTCMonth(),
+        parsedByRuntime.getUTCDate()
+      )
+    );
+  }
+
+  return null;
+}
+
+function parseImportedTrainingType(value: unknown) {
+  const normalized = normalizeText(value);
+
+  if (!normalized) {
+    return 'internal' as const;
+  }
+
+  if (allowedTrainingTypeKeys.has(normalized)) {
+    return normalizeTrainingTypeForDb(normalized);
+  }
+
+  const matchedLabelEntry = Object.entries(thaiTrainingTypeLabels).find(
+    ([key, label]) =>
+      allowedTrainingTypeKeys.has(key) &&
+      normalizeComparableText(label) === normalizeComparableText(normalized)
+  );
+
+  if (matchedLabelEntry) {
+    return normalizeTrainingTypeForDb(matchedLabelEntry[0]);
+  }
+
+  const comparable = normalizeComparableText(normalized).replaceAll('-', ' ').replaceAll('_', ' ');
+
+  if (comparable.includes('online')) {
+    return 'online';
+  }
+
+  if (comparable.includes('ojt') || comparable.includes('on the job')) {
+    return 'onsite';
+  }
+
+  if (comparable.includes('external') || comparable.includes('public')) {
+    return 'external';
+  }
+
+  if (comparable.includes('internal')) {
+    return 'internal';
+  }
+
+  return null;
+}
+
+function parseImportedCategory(value: unknown) {
+  const normalized = normalizeText(value);
+
+  if (!normalized) {
+    return null;
+  }
+
+  const uppercased = normalized.toUpperCase();
+
+  if (uppercased === 'K' || uppercased.startsWith('KNOWLEDGE')) {
+    return 'K' as const;
+  }
+
+  if (uppercased === 'S' || uppercased.startsWith('SKILL')) {
+    return 'S' as const;
+  }
+
+  if (uppercased === 'A' || uppercased.startsWith('ATTITUDE')) {
+    return 'A' as const;
+  }
+
+  return null;
+}
+
+function validateImportedTrainingRecord(
+  rowNumber: number,
+  row: Record<string, unknown>,
+  employeeCode: string,
+  importYear: number
+) {
+  const courseName = normalizeText(row[TRAINING_HEADERS.courseName]);
+  const rawCategory = row[TRAINING_HEADERS.category];
+  const rawHours = row[TRAINING_HEADERS.hours];
+  const rawTrainingType = row[TRAINING_HEADERS.trainingType];
+  const rawTrainingDate = row[TRAINING_HEADERS.trainingDate];
+  const hasAnyTrainingValue = [courseName, rawCategory, rawHours, rawTrainingType, rawTrainingDate].some(
+    (value) => normalizeText(value).length > 0
+  );
+
+  if (!hasAnyTrainingValue) {
+    return { trainingRecord: null };
+  }
+
+  if (!courseName) {
+    return { error: rowError(rowNumber, 'กรุณาระบุชื่อหลักสูตร', employeeCode) };
+  }
+
+  const category = parseImportedCategory(rawCategory);
+
+  if (!category) {
+    return {
+      error: rowError(rowNumber, 'หมวดหมู่ต้องเป็น K, S หรือ A', employeeCode)
+    };
+  }
+
+  const hours = parseOptionalNumber(rawHours);
+
+  if (hours === null) {
+    return { error: rowError(rowNumber, 'กรุณาระบุชั่วโมงอบรม', employeeCode) };
+  }
+
+  if (Number.isNaN(hours)) {
+    return { error: rowError(rowNumber, 'ชั่วโมงอบรมต้องเป็นตัวเลข', employeeCode) };
+  }
+
+  if ((hours ?? 0) <= 0) {
+    return { error: rowError(rowNumber, 'ชั่วโมงอบรมต้องมากกว่า 0', employeeCode) };
+  }
+
+  const trainingType = parseImportedTrainingType(rawTrainingType);
+
+  if (!trainingType) {
+    return {
+      error: rowError(
+        rowNumber,
+        'ประเภทการอบรมต้องเป็น internal, external, online หรือ OJT',
+        employeeCode
+      )
+    };
+  }
+
+  const trainingDate = parseImportedTrainingDate(rawTrainingDate, importYear);
+
+  if (!trainingDate) {
+    return { error: rowError(rowNumber, 'วันที่อบรมไม่ถูกต้อง', employeeCode) };
+  }
+
+  return {
+    trainingRecord: {
+      courseName,
+      category,
+      hours: Number(hours.toFixed(2)),
+      trainingType,
+      trainingDate
+    } satisfies ImportedTrainingRecordInput
+  };
+}
+
+async function resolvePendingDepartmentId(organizationId: string, name: string) {
+  const existing = await db.query.departments.findFirst({
+    where: and(eq(departments.organizationId, organizationId), eq(departments.name, name))
+  });
+
+  if (existing) {
+    return { id: existing.id, pending: existing.pendingMasterReview };
+  }
+
+  const [department] = await db
+    .insert(departments)
+    .values({
+      organizationId,
+      name,
+      isActive: false,
+      pendingMasterReview: true
+    })
+    .returning({ id: departments.id });
+
+  return { id: department.id, pending: true };
+}
+
+async function resolvePendingPositionId(organizationId: string, name: string) {
+  const existing = await db.query.positions.findFirst({
+    where: and(eq(positions.organizationId, organizationId), eq(positions.name, name))
+  });
+
+  if (existing) {
+    return { id: existing.id, pending: existing.pendingMasterReview };
+  }
+
+  const [position] = await db
+    .insert(positions)
+    .values({
+      organizationId,
+      name,
+      isActive: false,
+      pendingMasterReview: true
+    })
+    .returning({ id: positions.id });
+
+  return { id: position.id, pending: true };
+}
+
+function validateHeaders(rows: Record<string, unknown>[]) {
+  const availableHeaders = rows[0] ? Object.keys(rows[0]) : [];
+  const requiredHeaders = [...thaiImportEmployeeHeaders, ...thaiImportTrainingHeaders];
+
+  return requiredHeaders.every((header) => availableHeaders.includes(header));
+}
+
+function hasMatchingEmployeeIdentity(
+  group: EmployeeImportGroup,
+  row: Omit<EmployeeImportGroup, 'rowNumbers' | 'trainingRecords'>
+) {
+  return (
+    group.employeeName === row.employeeName &&
+    group.email === row.email &&
+    group.company === row.company &&
+    group.department === row.department &&
+    group.position === row.position &&
+    group.status === row.status
+  );
+}
+
+async function insertImportedTrainingRecord({
+  organizationId,
+  userId,
+  employeeId,
+  sessionUserId,
+  trainingRecord
+}: {
+  organizationId: string;
+  userId: string | null;
+  employeeId: number;
+  sessionUserId: string;
+  trainingRecord: ImportedTrainingRecordInput;
+}) {
+  const minutes = decimalHoursToMinutes(trainingRecord.hours);
+  const baseValues = {
+    organizationId,
+    userId,
+    employeeId,
+    courseId: null,
+    courseName: trainingRecord.courseName,
+    trainingDate: trainingRecord.trainingDate,
+    trainingType: trainingRecord.trainingType,
+    hours: trainingRecord.hours,
+    approvedHours: trainingRecord.hours,
+    category: trainingRecord.category,
+    organizer: null,
+    note: 'imported from employee excel',
+    approvalStatus: 'approved' as const,
+    submittedByUserId: sessionUserId,
+    reviewedByUserId: sessionUserId,
+    reviewedBy: sessionUserId,
+    reviewedAt: new Date(),
+    createdBy: sessionUserId
+  };
+
+  try {
+    await db.insert(trainingRecords).values({
+      ...baseValues,
+      submittedMinutes: minutes,
+      approvedMinutes: minutes
+    });
+  } catch (error) {
+    if (!isMissingTrainingRecordMinutesStorage(error)) {
+      throw error;
+    }
+
+    await db.insert(trainingRecords).values(baseValues);
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireHRD();
+    const requestMetadata = getRequestMetadata(request);
+    const formData = await request.formData();
+    const file = formData.get('file');
+    const importYear = parseImportYear(formData.get('year'));
+
+    if (!(file instanceof File)) {
+      return NextResponse.json(
+        { message: 'กรุณาแนบไฟล์ Excel สำหรับนำเข้า' },
+        { status: 400 }
+      );
+    }
+
+    if (!file.name.toLowerCase().endsWith('.xlsx')) {
+      return NextResponse.json(
+        { message: 'ระบบรองรับเฉพาะไฟล์ .xlsx เท่านั้น' },
+        { status: 400 }
+      );
+    }
+
+    const buffer = await file.arrayBuffer();
+    const workbook = XLSX.read(buffer, { type: 'array' });
+    const worksheet = workbook.Sheets[workbook.SheetNames[0]];
+
+    if (!worksheet) {
+      return NextResponse.json({ message: 'ไม่พบข้อมูลในไฟล์ที่อัปโหลด' }, { status: 400 });
+    }
+
+    const rows = XLSX.utils.sheet_to_json<Record<string, unknown>>(worksheet, { defval: '' });
+
+    if (rows.length === 0) {
+      return NextResponse.json(
+        { message: 'ไม่พบข้อมูลพนักงานในไฟล์ที่อัปโหลด' },
+        { status: 400 }
+      );
+    }
+
+    if (!validateHeaders(rows)) {
+      return NextResponse.json(
+        {
+          message: `หัวตารางไม่ถูกต้อง กรุณาใช้เทมเพลตภาษาไทยของระบบ: ${thaiImportTemplateHeaders.join(', ')}`
+        },
+        { status: 400 }
+      );
+    }
+
+    const errors: ImportError[] = [];
+    const groupedRows = new Map<string, EmployeeImportGroup>();
+    const emailOwners = new Map<string, string>();
+
+    for (const [index, row] of rows.entries()) {
+      const rowNumber = index + 2;
+      const employeeCode = normalizeText(row[EMPLOYEE_HEADERS.employeeCode]);
+      const employeeName = normalizeText(row[EMPLOYEE_HEADERS.employeeName]);
+      const email = normalizeText(row[EMPLOYEE_HEADERS.email]).toLowerCase();
+      const company = normalizeText(row[EMPLOYEE_HEADERS.company]);
+      const department = normalizeText(row[EMPLOYEE_HEADERS.department]);
+      const position = normalizeText(row[EMPLOYEE_HEADERS.position]);
+      const status = normalizeText(row[EMPLOYEE_HEADERS.status]);
+
+      if (!employeeCode || !employeeName || !company || !department || !position || !status) {
+        errors.push(
+          rowError(rowNumber, 'กรุณากรอกข้อมูลที่จำเป็นให้ครบทุกช่อง', employeeCode)
+        );
+        continue;
+      }
+
+      if (email && !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
+        errors.push(rowError(rowNumber, 'รูปแบบอีเมลไม่ถูกต้อง', employeeCode));
+        continue;
+      }
+
+      if (normalizeImportedStatus(status) === null) {
+        errors.push(rowError(rowNumber, 'สถานะต้องเป็น ใช้งาน หรือ ไม่ใช้งาน', employeeCode));
+        continue;
+      }
+
+      const trainingValidation = validateImportedTrainingRecord(
+        rowNumber,
+        row,
+        employeeCode,
+        importYear
+      );
+      if ('error' in trainingValidation && trainingValidation.error) {
+        errors.push(trainingValidation.error);
+        continue;
+      }
+
+      if (email) {
+        const ownedByEmployeeCode = emailOwners.get(email);
+
+        if (ownedByEmployeeCode && ownedByEmployeeCode !== employeeCode) {
+          errors.push(rowError(rowNumber, 'พบอีเมลซ้ำกับพนักงานอีกคนในไฟล์นำเข้า', employeeCode));
+          continue;
+        }
+
+        emailOwners.set(email, employeeCode);
+      }
+
+      const existingGroup = groupedRows.get(employeeCode);
+      const identityRow = {
+        employeeCode,
+        employeeName,
+        email,
+        company,
+        department,
+        position,
+        status
+      };
+
+      if (existingGroup) {
+        if (!hasMatchingEmployeeIdentity(existingGroup, identityRow)) {
+          errors.push(
+            rowError(rowNumber, 'พบรหัสพนักงานซ้ำแต่ข้อมูลพนักงานไม่ตรงกัน', employeeCode)
+          );
+          continue;
+        }
+
+        existingGroup.rowNumbers.push(rowNumber);
+
+        if (trainingValidation.trainingRecord) {
+          existingGroup.trainingRecords.push({
+            rowNumber,
+            data: trainingValidation.trainingRecord
+          });
+        }
+
+        continue;
+      }
+
+      groupedRows.set(employeeCode, {
+        ...identityRow,
+        rowNumbers: [rowNumber],
+        trainingRecords: trainingValidation.trainingRecord
+          ? [
+              {
+                rowNumber,
+                data: trainingValidation.trainingRecord
+              }
+            ]
+          : []
+      });
+    }
+
+    let createdEmployees = 0;
+    let updatedEmployees = 0;
+    let linkedUsers = 0;
+    let importedTrainingRecords = 0;
+    const pendingCompanyNames = new Set<string>();
+
+    for (const group of groupedRows.values()) {
+      try {
+        const isActive = normalizeImportedStatus(group.status);
+
+        if (isActive === null) {
+          for (const rowNumber of group.rowNumbers) {
+            errors.push(rowError(rowNumber, 'สถานะไม่ถูกต้อง', group.employeeCode));
+          }
+          continue;
+        }
+
+        const [departmentResult, positionResult, existingEmployee] = await Promise.all([
+          resolvePendingDepartmentId(organization.id, group.department),
+          resolvePendingPositionId(organization.id, group.position),
+          findEmployeeByCodeForOrganization({
+            organizationId: organization.id,
+            employeeCode: group.employeeCode
+          })
+        ]);
+
+        if (group.company !== organization.name) {
+          pendingCompanyNames.add(group.company);
+        }
+
+        const employee = await upsertEmployeeMasterFromImport({
+          organizationId: organization.id,
+          employeeCode: group.employeeCode,
+          fullName: group.employeeName,
+          email: group.email,
+          companyName: group.company,
+          departmentId: departmentResult.id,
+          positionId: positionResult.id,
+          isActive
+        });
+
+        if (existingEmployee) {
+          updatedEmployees += 1;
+        } else {
+          createdEmployees += 1;
+        }
+
+        const syncedUserIds = await syncUsersForEmployeeCode({
+          organizationId: organization.id,
+          employeeCode: group.employeeCode,
+          employeeId: employee.id
+        });
+        linkedUsers += syncedUserIds.length;
+
+        for (const trainingRecordRow of group.trainingRecords) {
+          try {
+            await insertImportedTrainingRecord({
+              organizationId: organization.id,
+              userId: syncedUserIds[0] ?? null,
+              employeeId: employee.id,
+              sessionUserId: session.user.id,
+              trainingRecord: trainingRecordRow.data
+            });
+
+            importedTrainingRecords += 1;
+          } catch (error) {
+            errors.push(
+              rowError(
+                trainingRecordRow.rowNumber,
+                error instanceof Error
+                  ? error.message
+                  : 'เกิดข้อผิดพลาดระหว่างบันทึกประวัติการอบรม',
+                group.employeeCode
+              )
+            );
+          }
+        }
+      } catch (error) {
+        for (const rowNumber of group.rowNumbers) {
+          errors.push(
+            rowError(
+              rowNumber,
+              error instanceof Error ? error.message : 'เกิดข้อผิดพลาดระหว่างนำเข้าข้อมูล',
+              group.employeeCode
+            )
+          );
+        }
+      }
+    }
+
+    const pendingCompanies = pendingCompanyNames.size;
+
+    await db
+      .update(organizations)
+      .set({
+        pendingMasterReview: pendingCompanies > 0,
+        updatedAt: new Date()
+      })
+      .where(eq(organizations.id, organization.id));
+
+    const [pendingDepartmentsRow] = await db
+      .select({ value: sql<number>`count(*)::int` })
+      .from(departments)
+      .where(
+        and(eq(departments.organizationId, organization.id), eq(departments.pendingMasterReview, true))
+      );
+
+    const [pendingPositionsRow] = await db
+      .select({ value: sql<number>`count(*)::int` })
+      .from(positions)
+      .where(and(eq(positions.organizationId, organization.id), eq(positions.pendingMasterReview, true)));
+
+    const failedRows = errors.length;
+    const successRows = Math.max(rows.length - failedRows, 0);
+    const summary = {
+      total_rows: rows.length,
+      created_employees: createdEmployees,
+      updated_employees: updatedEmployees,
+      linked_users: linkedUsers,
+      imported_training_records: importedTrainingRecords,
+      failed_rows: failedRows,
+      pending_companies: pendingCompanies,
+      pending_departments: pendingDepartmentsRow?.value ?? 0,
+      pending_positions: pendingPositionsRow?.value ?? 0
+    };
+
+    const [job] = await db
+      .insert(importJobs)
+      .values({
+        organizationId: organization.id,
+        importType: 'employee_excel',
+        fileName: file.name,
+        totalRows: rows.length,
+        successRows,
+        failedRows,
+        status: 'completed',
+        createdBy: session.user.id
+      })
+      .returning({ id: importJobs.id });
+
+    await createImportCompletedNotification({
+      organizationId: organization.id,
+      userId: session.user.id,
+      totalRows: rows.length,
+      successRows,
+      failedRows,
+      referenceId: job.id
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.EMPLOYEE_IMPORT,
+      action: AUDIT_ACTION.IMPORT,
+      entityName: file.name,
+      entityId: job.id,
+      newValue: toAuditValue({
+        file_name: file.name,
+        import_year: importYear,
+        summary
+      }),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message:
+        failedRows === 0
+          ? 'นำเข้าข้อมูลพนักงานและประวัติการอบรมเรียบร้อยแล้ว'
+          : 'นำเข้าข้อมูลสำเร็จบางส่วน กรุณาตรวจสอบรายการที่ผิดพลาด',
+      import_job_id: job.id,
+      summary,
+      errors
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json(
+      { message: 'ไม่สามารถนำเข้าข้อมูลพนักงานได้' },
+      { status: 500 }
+    );
+  }
+}

src/app/api/import-employees/template/route.ts

@@ -0,0 +1,69 @@
+import { NextResponse } from 'next/server';
+import * as XLSX from 'xlsx';
+import {
+  thaiImportEmployeeHeaders,
+  thaiImportTemplateHeaders,
+  thaiImportTrainingHeaders
+} from '@/constants/thai-labels';
+import { AuthError, requireHRD } from '@/lib/auth/session';
+
+export async function GET() {
+  try {
+    await requireHRD();
+
+    const workbook = XLSX.utils.book_new();
+    const worksheet = XLSX.utils.aoa_to_sheet([
+      [...thaiImportTemplateHeaders],
+      [
+        'EMP-001',
+        'สมชาย ใจดี',
+        'somchai@example.com',
+        'บริษัทตัวอย่าง',
+        'ฝ่ายผลิต',
+        'ช่างเทคนิค',
+        'ใช้งาน',
+        'React Basic',
+        'K',
+        6,
+        'INTERNAL_TRAINING',
+        '2026-01-15'
+      ],
+      [
+        'EMP-001',
+        'สมชาย ใจดี',
+        'somchai@example.com',
+        'บริษัทตัวอย่าง',
+        'ฝ่ายผลิต',
+        'ช่างเทคนิค',
+        'ใช้งาน',
+        'Next.js',
+        'S',
+        8,
+        'ONLINE_COURSE',
+        '2026-02-20'
+      ]
+    ]);
+
+    worksheet['!cols'] = [
+      ...thaiImportEmployeeHeaders.map(() => ({ wch: 20 })),
+      ...thaiImportTrainingHeaders.map(() => ({ wch: 22 }))
+    ];
+
+    XLSX.utils.book_append_sheet(workbook, worksheet, 'Employees');
+    const buffer = XLSX.write(workbook, { type: 'buffer', bookType: 'xlsx' });
+
+    return new NextResponse(buffer, {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        'Content-Disposition': 'attachment; filename="employee-import-template-th.xlsx"'
+      }
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถสร้างเทมเพลตนำเข้าได้' }, { status: 500 });
+  }
+}

src/app/api/master-review/route.ts

@@ -0,0 +1,371 @@
+import { and, eq, inArray, ne } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { departments, memberships, organizations, positions, users } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import { createMasterReviewNotification } from '@/features/notifications/server/notification-service';
+import { AuthError, requireHRD } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+async function getOrganizationUserIds(organizationId: string) {
+  const rows = await db
+    .select({ id: memberships.userId })
+    .from(memberships)
+    .where(eq(memberships.organizationId, organizationId));
+
+  return rows.map((row) => row.id);
+}
+
+async function updateOrganizationPendingCompanyFlag(organizationId: string, organizationName: string) {
+  const [remaining] = await db
+    .selectDistinct({ id: users.companyName })
+    .from(memberships)
+    .innerJoin(users, eq(memberships.userId, users.id))
+    .where(and(eq(memberships.organizationId, organizationId), ne(users.companyName, organizationName)));
+
+  await db
+    .update(organizations)
+    .set({
+      pendingMasterReview: Boolean(remaining),
+      updatedAt: new Date()
+    })
+    .where(eq(organizations.id, organizationId));
+}
+
+export async function GET() {
+  try {
+    const { organization } = await requireHRD();
+
+    const [companyRows, departmentRows, positionRows] = await Promise.all([
+      db
+        .selectDistinct({
+          id: users.companyName,
+          name: users.companyName
+        })
+        .from(memberships)
+        .innerJoin(users, eq(memberships.userId, users.id))
+        .where(and(eq(memberships.organizationId, organization.id), ne(users.companyName, organization.name))),
+      db
+        .select()
+        .from(departments)
+        .where(and(eq(departments.organizationId, organization.id), eq(departments.pendingMasterReview, true))),
+      db
+        .select()
+        .from(positions)
+        .where(and(eq(positions.organizationId, organization.id), eq(positions.pendingMasterReview, true)))
+    ]);
+
+    const companies = await Promise.all(
+      companyRows
+        .filter((row) => row.id && row.name)
+        .map(async (row) => {
+          const affectedRows = await db
+            .select({ value: users.id })
+            .from(memberships)
+            .innerJoin(users, eq(memberships.userId, users.id))
+            .where(and(eq(memberships.organizationId, organization.id), eq(users.companyName, row.name!)));
+
+          return {
+            id: row.id!,
+            type: 'company' as const,
+            name: row.name!,
+            affected_count: affectedRows.length,
+            status: 'pending' as const
+          };
+        })
+    );
+
+    const departmentsPayload = await Promise.all(
+      departmentRows.map(async (row) => {
+        const affectedRows = await db
+          .select({ value: users.id })
+          .from(memberships)
+          .innerJoin(users, eq(memberships.userId, users.id))
+          .where(and(eq(memberships.organizationId, organization.id), eq(users.departmentId, row.id)));
+
+        return {
+          id: String(row.id),
+          type: 'department' as const,
+          name: row.name,
+          affected_count: affectedRows.length,
+          status: 'pending' as const
+        };
+      })
+    );
+
+    const positionsPayload = await Promise.all(
+      positionRows.map(async (row) => {
+        const affectedRows = await db
+          .select({ value: users.id })
+          .from(memberships)
+          .innerJoin(users, eq(memberships.userId, users.id))
+          .where(and(eq(memberships.organizationId, organization.id), eq(users.positionId, row.id)));
+
+        return {
+          id: String(row.id),
+          type: 'position' as const,
+          name: row.name,
+          affected_count: affectedRows.length,
+          status: 'pending' as const
+        };
+      })
+    );
+
+    return NextResponse.json({
+      success: true,
+      message: 'โหลดรายการรอตรวจสอบข้อมูลหลักเรียบร้อยแล้ว',
+      companies,
+      departments: departmentsPayload,
+      positions: positionsPayload
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดรายการรอตรวจสอบได้' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest) {
+  try {
+    const { organization, session } = await requireHRD();
+    const requestMetadata = getRequestMetadata(request);
+    const body = (await request.json()) as {
+      entityType: 'company' | 'department' | 'position';
+      action: 'approve' | 'reject';
+      id: string;
+    };
+
+    const scopedUserIds = await getOrganizationUserIds(organization.id);
+
+    if (body.entityType === 'company') {
+      if (body.action === 'approve') {
+        await db
+          .update(organizations)
+          .set({
+            name: body.id,
+            updatedAt: new Date()
+          })
+          .where(eq(organizations.id, organization.id));
+
+        await updateOrganizationPendingCompanyFlag(organization.id, body.id);
+
+        await createMasterReviewNotification({
+          organizationId: organization.id,
+          userId: session.user.id,
+          masterType: 'บริษัท',
+          entityName: body.id,
+          action: 'approve',
+          referenceId: body.id
+        });
+
+        await logAuditEvent({
+          organizationId: organization.id,
+          userId: session.user.id,
+          module: AUDIT_MODULE.MASTER_REVIEW,
+          action: AUDIT_ACTION.APPROVE,
+          entityName: body.id,
+          entityId: body.id,
+          newValue: toAuditValue({
+            entityType: body.entityType,
+            action: body.action,
+            name: body.id
+          }),
+          ...requestMetadata
+        });
+
+        return NextResponse.json({
+          success: true,
+          message: 'อนุมัติชื่อบริษัทเรียบร้อยแล้ว'
+        });
+      }
+
+      if (scopedUserIds.length > 0) {
+        await db
+          .update(users)
+          .set({
+            companyName: organization.name,
+            updatedAt: new Date()
+          })
+          .where(and(inArray(users.id, scopedUserIds), eq(users.companyName, body.id)));
+      }
+
+      await updateOrganizationPendingCompanyFlag(organization.id, organization.name);
+
+      await createMasterReviewNotification({
+        organizationId: organization.id,
+        userId: session.user.id,
+        masterType: 'บริษัท',
+        entityName: body.id,
+        action: 'reject',
+        referenceId: body.id
+      });
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.MASTER_REVIEW,
+        action: AUDIT_ACTION.REJECT,
+        entityName: body.id,
+        entityId: body.id,
+        newValue: toAuditValue({
+          entityType: body.entityType,
+          action: body.action,
+          name: body.id
+        }),
+        ...requestMetadata
+      });
+
+      return NextResponse.json({
+        success: true,
+        message: 'ไม่อนุมัติชื่อบริษัทเรียบร้อยแล้ว'
+      });
+    }
+
+    const targetId = Number(body.id);
+    const targetRow =
+      body.entityType === 'department'
+        ? await db.query.departments.findFirst({
+            where: and(eq(departments.id, targetId), eq(departments.organizationId, organization.id))
+          })
+        : await db.query.positions.findFirst({
+            where: and(eq(positions.id, targetId), eq(positions.organizationId, organization.id))
+          });
+
+    if (!targetRow) {
+      return NextResponse.json({ message: 'ไม่พบข้อมูลหลักที่ต้องการตรวจสอบ' }, { status: 404 });
+    }
+
+    if (body.entityType === 'department') {
+      if (body.action === 'approve') {
+        await db
+          .update(departments)
+          .set({
+            isActive: true,
+            pendingMasterReview: false,
+            updatedAt: new Date()
+          })
+          .where(and(eq(departments.id, targetId), eq(departments.organizationId, organization.id)));
+      } else {
+        if (scopedUserIds.length > 0) {
+          await db
+            .update(users)
+            .set({
+              departmentId: null,
+              updatedAt: new Date()
+            })
+            .where(and(inArray(users.id, scopedUserIds), eq(users.departmentId, targetId)));
+        }
+
+        await db
+          .update(departments)
+          .set({
+            isActive: false,
+            pendingMasterReview: false,
+            updatedAt: new Date()
+          })
+          .where(and(eq(departments.id, targetId), eq(departments.organizationId, organization.id)));
+      }
+
+      await createMasterReviewNotification({
+        organizationId: organization.id,
+        userId: session.user.id,
+        masterType: 'แผนก',
+        entityName: targetRow.name,
+        action: body.action,
+        referenceId: targetId
+      });
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.MASTER_REVIEW,
+        action: body.action === 'approve' ? AUDIT_ACTION.APPROVE : AUDIT_ACTION.REJECT,
+        entityName: targetRow.name,
+        entityId: targetId,
+        newValue: toAuditValue({
+          entityType: body.entityType,
+          action: body.action,
+          name: targetRow.name
+        }),
+        ...requestMetadata
+      });
+
+      return NextResponse.json({
+        success: true,
+        message: body.action === 'approve' ? 'อนุมัติแผนกเรียบร้อยแล้ว' : 'ไม่อนุมัติแผนกเรียบร้อยแล้ว'
+      });
+    }
+
+    if (body.action === 'approve') {
+      await db
+        .update(positions)
+        .set({
+          isActive: true,
+          pendingMasterReview: false,
+          updatedAt: new Date()
+        })
+        .where(and(eq(positions.id, targetId), eq(positions.organizationId, organization.id)));
+    } else {
+      if (scopedUserIds.length > 0) {
+        await db
+          .update(users)
+          .set({
+            positionId: null,
+            updatedAt: new Date()
+          })
+          .where(and(inArray(users.id, scopedUserIds), eq(users.positionId, targetId)));
+      }
+
+      await db
+        .update(positions)
+        .set({
+          isActive: false,
+          pendingMasterReview: false,
+          updatedAt: new Date()
+        })
+        .where(and(eq(positions.id, targetId), eq(positions.organizationId, organization.id)));
+    }
+
+    await createMasterReviewNotification({
+      organizationId: organization.id,
+      userId: session.user.id,
+      masterType: 'ตำแหน่ง',
+      entityName: targetRow.name,
+      action: body.action,
+      referenceId: targetId
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.MASTER_REVIEW,
+      action: body.action === 'approve' ? AUDIT_ACTION.APPROVE : AUDIT_ACTION.REJECT,
+      entityName: targetRow.name,
+      entityId: targetId,
+      newValue: toAuditValue({
+        entityType: body.entityType,
+        action: body.action,
+        name: targetRow.name
+      }),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: body.action === 'approve' ? 'อนุมัติตำแหน่งเรียบร้อยแล้ว' : 'ไม่อนุมัติตำแหน่งเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถอัปเดตรายการรอตรวจสอบได้' }, { status: 500 });
+  }
+}

src/app/api/notifications/[id]/read/route.ts

@@ -0,0 +1,34 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { markNotificationAsRead } from '@/features/notifications/server/notification-service';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { id } = await params;
+
+    const updated = await markNotificationAsRead({
+      organizationId: organization.id,
+      notificationId: Number(id),
+      actorUserId: session.user.id,
+      request
+    });
+
+    if (!updated) {
+      return NextResponse.json({ message: 'ไม่พบการแจ้งเตือน' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: 'อ่านการแจ้งเตือนแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถอัปเดตการแจ้งเตือนได้' }, { status: 500 });
+  }
+}

src/app/api/notifications/read-all/route.ts

@@ -0,0 +1,25 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { markAllNotificationsAsRead } from '@/features/notifications/server/notification-service';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+export async function PATCH(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const count = await markAllNotificationsAsRead({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      request
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: count > 0 ? 'อ่านการแจ้งเตือนทั้งหมดแล้ว' : 'ไม่มีการแจ้งเตือนที่ยังไม่ได้อ่าน'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถอัปเดตการแจ้งเตือนได้' }, { status: 500 });
+  }
+}

src/app/api/notifications/route.ts

@@ -0,0 +1,58 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import { listNotificationsForUser } from '@/features/notifications/server/notification-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+const notificationFilterSchema = z.object({
+  page: z.coerce.number().int().min(1).default(1),
+  limit: z.coerce.number().int().min(1).max(100).default(10),
+  search: z.string().trim().optional(),
+  status: z.enum(['all', 'unread', 'read']).default('all'),
+  type: z
+    .enum([
+      'TRAINING_APPROVED',
+      'TRAINING_REJECTED',
+      'ANNOUNCEMENT_PUBLISHED',
+      'IMPORT_COMPLETED',
+      'MASTER_REVIEW_APPROVED',
+      'MASTER_REVIEW_REJECTED',
+      'SYSTEM'
+    ])
+    .optional()
+});
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const filters = notificationFilterSchema.parse({
+      page: request.nextUrl.searchParams.get('page') ?? undefined,
+      limit: request.nextUrl.searchParams.get('limit') ?? undefined,
+      search: request.nextUrl.searchParams.get('search') ?? undefined,
+      status: request.nextUrl.searchParams.get('status') ?? undefined,
+      type: request.nextUrl.searchParams.get('type') ?? undefined
+    });
+
+    const result = await listNotificationsForUser({
+      organizationId: organization.id,
+      userId: session.user.id,
+      filters
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดการแจ้งเตือนเรียบร้อยแล้ว',
+      total_notifications: result.total,
+      unread_count: result.unreadCount,
+      offset: result.offset,
+      limit: result.limit,
+      notifications: result.notifications
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดการแจ้งเตือนได้' }, { status: 500 });
+  }
+}

src/app/api/online-lessons/[id]/attachment/download/route.ts

@@ -0,0 +1,25 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { buildOnlineLessonAttachmentResponse } from '@/features/online-lessons/server/online-lesson-attachment-response';
+
+type Params = { params: Promise<{ id: string }> };
+
+export const runtime = 'nodejs';
+
+function parseLessonId(value: string) {
+  const lessonId = Number(value);
+  return Number.isNaN(lessonId) ? null : lessonId;
+}
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  const { id } = await params;
+  const lessonId = parseLessonId(id);
+
+  if (!lessonId) {
+    return NextResponse.json({ message: 'Invalid online lesson attachment request' }, { status: 400 });
+  }
+
+  return buildOnlineLessonAttachmentResponse({
+    lessonId,
+    disposition: 'attachment'
+  });
+}

src/app/api/online-lessons/[id]/attachment/view/route.ts

@@ -0,0 +1,25 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { buildOnlineLessonAttachmentResponse } from '@/features/online-lessons/server/online-lesson-attachment-response';
+
+type Params = { params: Promise<{ id: string }> };
+
+export const runtime = 'nodejs';
+
+function parseLessonId(value: string) {
+  const lessonId = Number(value);
+  return Number.isNaN(lessonId) ? null : lessonId;
+}
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  const { id } = await params;
+  const lessonId = parseLessonId(id);
+
+  if (!lessonId) {
+    return NextResponse.json({ message: 'Invalid online lesson attachment request' }, { status: 400 });
+  }
+
+  return buildOnlineLessonAttachmentResponse({
+    lessonId,
+    disposition: 'inline'
+  });
+}

src/app/api/online-lessons/[id]/route.ts

@@ -0,0 +1,690 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { onlineLessons } from '@/db/schema';
+import {
+  canDeleteContent,
+  canEditContent,
+  canReadAllContent,
+  canTransitionContent,
+  getNextContentStatus
+} from '@/features/content-approval/lib/workflow';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  onlineLessonDraftActionSchema,
+  onlineLessonDraftSchema,
+  validateOnlineLessonReadyForReview
+} from '@/features/online-lessons/schemas/online-lesson';
+import { normalizeOnlineLessonCategory } from '@/features/online-lessons/constants/categories';
+import {
+  getOnlineLessonByIdForAccess,
+  getOnlineLessonReviewRecipientIds,
+  serializeOnlineLesson
+} from '@/features/online-lessons/server/online-lesson-data';
+import { createContentWorkflowNotification } from '@/features/notifications/server/notification-service';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { getDatabaseErrorMessage } from '@/lib/db-errors';
+import { db } from '@/lib/db';
+import {
+  deleteStoredOnlineLessonAsset,
+  ONLINE_LESSON_ACCEPTED_ATTACHMENT_TYPES,
+  ONLINE_LESSON_ACCEPTED_THUMBNAIL_TYPES,
+  ONLINE_LESSON_ACCEPTED_VIDEO_TYPES,
+  ONLINE_LESSON_MAX_ATTACHMENT_SIZE,
+  ONLINE_LESSON_MAX_THUMBNAIL_SIZE,
+  ONLINE_LESSON_MAX_VIDEO_SIZE,
+  saveOnlineLessonAttachment,
+  saveOnlineLessonThumbnail,
+  saveOnlineLessonVideo
+} from '@/lib/online-lesson-storage';
+
+function parseId(value: string) {
+  const id = Number(value);
+  if (Number.isNaN(id)) {
+    throw new Error('รหัสบทเรียนออนไลน์ไม่ถูกต้อง');
+  }
+  return id;
+}
+
+function parseBooleanValue(value: FormDataEntryValue | null) {
+  return value === 'true';
+}
+
+function normalizeTextValue(value: FormDataEntryValue | null) {
+  if (typeof value !== 'string') return '';
+  return value.trim();
+}
+
+function buildWorkflowMessage(comment: string | null, fallback: string) {
+  return comment ? `${fallback} หมายเหตุ: ${comment}` : fallback;
+}
+
+function validateOptionalFile({
+  file,
+  acceptedTypes,
+  maxSize,
+  errorMessage,
+  sizeErrorMessage
+}: {
+  file: File | null;
+  acceptedTypes: readonly string[];
+  maxSize: number;
+  errorMessage: string;
+  sizeErrorMessage: string;
+}) {
+  if (!file || file.size === 0) return null;
+
+  if (!acceptedTypes.includes(file.type)) {
+    throw new Error(errorMessage);
+  }
+
+  if (file.size > maxSize) {
+    throw new Error(sizeErrorMessage);
+  }
+
+  return file;
+}
+
+async function parseOnlineLessonFormData(request: NextRequest) {
+  const formData = await request.formData();
+  const rawValues = {
+    title: String(formData.get('title') ?? ''),
+    description: String(formData.get('description') ?? ''),
+    category: normalizeOnlineLessonCategory(String(formData.get('category') ?? '')),
+    videoUrl: normalizeTextValue(formData.get('videoUrl')) || undefined
+  };
+
+  const parsedValues = onlineLessonDraftSchema.safeParse(rawValues);
+  if (!parsedValues.success) {
+    throw new Error(parsedValues.error.issues[0]?.message ?? 'ข้อมูลบทเรียนออนไลน์ไม่ถูกต้อง');
+  }
+
+  const parsedAction = onlineLessonDraftActionSchema.safeParse(
+    String(formData.get('action') ?? 'draft')
+  );
+  if (!parsedAction.success) {
+    throw new Error('คำสั่งการบันทึกบทเรียนไม่ถูกต้อง');
+  }
+
+  return {
+    action: parsedAction.data,
+    values: parsedValues.data,
+    removeVideoFile: parseBooleanValue(formData.get('removeVideoFile')),
+    removeAttachment: parseBooleanValue(formData.get('removeAttachment')),
+    removeThumbnail: parseBooleanValue(formData.get('removeThumbnail')),
+    videoFile: validateOptionalFile({
+      file: formData.get('videoFile') as File | null,
+      acceptedTypes: ONLINE_LESSON_ACCEPTED_VIDEO_TYPES,
+      maxSize: ONLINE_LESSON_MAX_VIDEO_SIZE,
+      errorMessage: 'รองรับไฟล์วิดีโอ MP4, WEBM และ MOV เท่านั้น',
+      sizeErrorMessage: 'ไฟล์วิดีโอต้องมีขนาดไม่เกิน 200MB'
+    }),
+    attachmentFile: validateOptionalFile({
+      file: formData.get('attachmentFile') as File | null,
+      acceptedTypes: ONLINE_LESSON_ACCEPTED_ATTACHMENT_TYPES,
+      maxSize: ONLINE_LESSON_MAX_ATTACHMENT_SIZE,
+      errorMessage: 'ไฟล์แนบไม่อยู่ในรูปแบบที่รองรับ',
+      sizeErrorMessage: 'ไฟล์แนบต้องมีขนาดไม่เกิน 20MB'
+    }),
+    thumbnailFile: validateOptionalFile({
+      file: formData.get('thumbnailFile') as File | null,
+      acceptedTypes: ONLINE_LESSON_ACCEPTED_THUMBNAIL_TYPES,
+      maxSize: ONLINE_LESSON_MAX_THUMBNAIL_SIZE,
+      errorMessage: 'รูปปกต้องเป็น JPG, PNG หรือ WEBP เท่านั้น',
+      sizeErrorMessage: 'รูปปกต้องมีขนาดไม่เกิน 5MB'
+    })
+  };
+}
+
+export async function GET(
+  _request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { id: rawId } = await context.params;
+    const id = parseId(rawId);
+
+    const row = await getOnlineLessonByIdForAccess({
+      id,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!row) {
+      return NextResponse.json({ message: 'ไม่พบบทเรียนออนไลน์' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดรายละเอียดบทเรียนออนไลน์เรียบร้อยแล้ว',
+      online_lesson: serializeOnlineLesson(row, {
+        includeInternalReviewData: canReadAllContent(
+          'online_lesson',
+          session.user.effectivePermissions
+        )
+      })
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดรายละเอียดบทเรียนออนไลน์ได้' }, { status: 500 });
+  }
+}
+
+export async function PATCH(
+  request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id: rawId } = await context.params;
+    const id = parseId(rawId);
+
+    const [existing] = await db
+      .select()
+      .from(onlineLessons)
+      .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)))
+      .limit(1);
+
+    if (!existing) {
+      return NextResponse.json({ message: 'ไม่พบบทเรียนออนไลน์' }, { status: 404 });
+    }
+
+    const permissions = session.user.effectivePermissions;
+    const isOwner = existing.createdBy === session.user.id;
+    const previousSerialized = serializeOnlineLesson({
+      ...existing,
+      createdByName: null,
+      updatedByName: null
+    });
+
+    const contentType = request.headers.get('content-type') ?? '';
+    let nextStatus = existing.status;
+    let reviewComment = existing.reviewComment;
+    let multipartAction: 'draft' | 'submit' | null = null;
+    let successMessage = 'อัปเดตบทเรียนออนไลน์เรียบร้อยแล้ว';
+
+    if (contentType.includes('multipart/form-data')) {
+      if (
+        !canEditContent({
+          module: 'online_lesson',
+          permissions,
+          status: existing.status,
+          isOwner
+        })
+      ) {
+        return NextResponse.json({ message: 'ไม่มีสิทธิ์แก้ไขบทเรียนในสถานะปัจจุบัน' }, { status: 403 });
+      }
+
+      const {
+        action,
+        values,
+        removeVideoFile,
+        removeAttachment,
+        removeThumbnail,
+        videoFile,
+        attachmentFile,
+        thumbnailFile
+      } = await parseOnlineLessonFormData(request);
+
+      multipartAction = action;
+
+      const hasExistingThumbnail = Boolean(existing.thumbnailUrl && !removeThumbnail);
+      const canSubmitAgain = canTransitionContent({
+        module: 'online_lesson',
+        action: 'submit',
+        currentStatus: existing.status,
+        permissions,
+        isOwner
+      });
+
+      if (action === 'submit') {
+        if (!canSubmitAgain) {
+          return NextResponse.json({ message: 'ไม่มีสิทธิ์ส่งบทเรียนเพื่อตรวจสอบ' }, { status: 403 });
+        }
+
+        validateOnlineLessonReadyForReview({
+          values,
+          hasThumbnailSource: Boolean(thumbnailFile || hasExistingThumbnail)
+        });
+
+        nextStatus = getNextContentStatus('submit');
+        successMessage = 'ส่งบทเรียนเพื่อตรวจสอบเรียบร้อยแล้ว';
+      } else {
+        nextStatus = existing.status;
+        successMessage = canSubmitAgain
+          ? 'บันทึกบทเรียนฉบับร่างเรียบร้อยแล้ว'
+          : 'บันทึกการแก้ไขบทเรียนเรียบร้อยแล้ว';
+      }
+
+      await db
+        .update(onlineLessons)
+        .set({
+          title: values.title.trim(),
+          description: values.description?.trim() || null,
+          category: values.category?.trim() || null,
+          videoUrl: values.videoUrl?.trim() || null,
+          status: nextStatus,
+          submittedAt: action === 'submit' ? new Date() : existing.submittedAt,
+          submittedBy: action === 'submit' ? session.user.id : existing.submittedBy,
+          updatedBy: session.user.id,
+          updatedAt: new Date(),
+          ...(removeVideoFile && !videoFile
+            ? {
+                videoFileName: null,
+                videoFileType: null,
+                videoFileSize: null,
+                videoStorageKey: null,
+                videoFileUrl: null
+              }
+            : {}),
+          ...(removeAttachment && !attachmentFile
+            ? {
+                attachmentFileName: null,
+                attachmentFileType: null,
+                attachmentFileSize: null,
+                attachmentStorageKey: null,
+                attachmentFileUrl: null
+              }
+            : {}),
+          ...(removeThumbnail && !thumbnailFile
+            ? {
+                thumbnailFileName: null,
+                thumbnailFileType: null,
+                thumbnailFileSize: null,
+                thumbnailStorageKey: null,
+                thumbnailUrl: null
+              }
+            : {})
+        })
+        .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)));
+
+      if (removeVideoFile && !videoFile && existing.videoStorageKey) {
+        await deleteStoredOnlineLessonAsset(existing.videoStorageKey);
+      }
+      if (removeAttachment && !attachmentFile && existing.attachmentStorageKey) {
+        await deleteStoredOnlineLessonAsset(existing.attachmentStorageKey);
+      }
+      if (removeThumbnail && !thumbnailFile && existing.thumbnailStorageKey) {
+        await deleteStoredOnlineLessonAsset(existing.thumbnailStorageKey);
+      }
+
+      if (videoFile) {
+        const storedVideo = await saveOnlineLessonVideo({
+          file: videoFile,
+          organizationId: organization.id,
+          lessonId: id
+        });
+
+        await db
+          .update(onlineLessons)
+          .set({
+            videoFileName: storedVideo.fileName,
+            videoFileType: storedVideo.fileType,
+            videoFileSize: storedVideo.fileSize,
+            videoStorageKey: storedVideo.storageKey,
+            videoFileUrl: storedVideo.fileUrl,
+            updatedBy: session.user.id,
+            updatedAt: new Date()
+          })
+          .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)));
+
+        if (existing.videoStorageKey) {
+          await deleteStoredOnlineLessonAsset(existing.videoStorageKey);
+        }
+      }
+
+      if (attachmentFile) {
+        const storedAttachment = await saveOnlineLessonAttachment({
+          file: attachmentFile,
+          organizationId: organization.id,
+          lessonId: id
+        });
+
+        await db
+          .update(onlineLessons)
+          .set({
+            attachmentFileName: storedAttachment.fileName,
+            attachmentFileType: storedAttachment.fileType,
+            attachmentFileSize: storedAttachment.fileSize,
+            attachmentStorageKey: storedAttachment.storageKey,
+            attachmentFileUrl: storedAttachment.fileUrl,
+            updatedBy: session.user.id,
+            updatedAt: new Date()
+          })
+          .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)));
+
+        if (existing.attachmentStorageKey) {
+          await deleteStoredOnlineLessonAsset(existing.attachmentStorageKey);
+        }
+      }
+
+      if (thumbnailFile) {
+        const storedThumbnail = await saveOnlineLessonThumbnail({
+          file: thumbnailFile,
+          organizationId: organization.id,
+          lessonId: id
+        });
+
+        await db
+          .update(onlineLessons)
+          .set({
+            thumbnailFileName: storedThumbnail.fileName,
+            thumbnailFileType: storedThumbnail.fileType,
+            thumbnailFileSize: storedThumbnail.fileSize,
+            thumbnailStorageKey: storedThumbnail.storageKey,
+            thumbnailUrl: storedThumbnail.fileUrl,
+            updatedBy: session.user.id,
+            updatedAt: new Date()
+          })
+          .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)));
+
+        if (existing.thumbnailStorageKey) {
+          await deleteStoredOnlineLessonAsset(existing.thumbnailStorageKey);
+        }
+      }
+    } else {
+      const body = (await request.json()) as {
+        action?: 'submit' | 'approve' | 'return' | 'reject' | 'publish' | 'archive';
+        status?:
+          | 'draft'
+          | 'pending_review'
+          | 'approved'
+          | 'published'
+          | 'returned'
+          | 'rejected'
+          | 'archived';
+        comment?: string;
+      };
+
+      const normalizedAction =
+        body.action ??
+        (body.status === 'pending_review'
+          ? 'submit'
+          : body.status === 'published'
+            ? 'publish'
+            : body.status === 'archived'
+              ? 'archive'
+              : undefined);
+
+      if (!normalizedAction) {
+        return NextResponse.json({ message: 'ไม่มีข้อมูลสำหรับอัปเดต' }, { status: 400 });
+      }
+
+      if (
+        !canTransitionContent({
+          module: 'online_lesson',
+          action: normalizedAction,
+          currentStatus: existing.status,
+          permissions,
+          isOwner
+        })
+      ) {
+        return NextResponse.json({ message: 'ไม่สามารถเปลี่ยนสถานะบทเรียนได้' }, { status: 403 });
+      }
+
+      nextStatus = getNextContentStatus(normalizedAction);
+      reviewComment = body.comment?.trim() || existing.reviewComment;
+      successMessage =
+        normalizedAction === 'publish'
+          ? 'เผยแพร่บทเรียนเรียบร้อยแล้ว'
+          : normalizedAction === 'archive'
+            ? 'เก็บบทเรียนเข้าคลังเรียบร้อยแล้ว'
+            : normalizedAction === 'approve'
+              ? 'อนุมัติบทเรียนเรียบร้อยแล้ว'
+              : normalizedAction === 'return'
+                ? 'ส่งบทเรียนกลับเพื่อแก้ไขเรียบร้อยแล้ว'
+                : normalizedAction === 'reject'
+                  ? 'ปฏิเสธบทเรียนเรียบร้อยแล้ว'
+                  : 'ส่งบทเรียนเพื่อตรวจสอบเรียบร้อยแล้ว';
+
+      await db
+        .update(onlineLessons)
+        .set({
+          status: nextStatus,
+          submittedAt: normalizedAction === 'submit' ? new Date() : existing.submittedAt,
+          submittedBy: normalizedAction === 'submit' ? session.user.id : existing.submittedBy,
+          reviewedAt:
+            normalizedAction === 'approve' ||
+            normalizedAction === 'return' ||
+            normalizedAction === 'reject'
+              ? new Date()
+              : existing.reviewedAt,
+          reviewedBy:
+            normalizedAction === 'approve' ||
+            normalizedAction === 'return' ||
+            normalizedAction === 'reject'
+              ? session.user.id
+              : existing.reviewedBy,
+          approvedAt: normalizedAction === 'approve' ? new Date() : existing.approvedAt,
+          approvedBy: normalizedAction === 'approve' ? session.user.id : existing.approvedBy,
+          isPublished:
+            normalizedAction === 'publish'
+              ? true
+              : normalizedAction === 'archive'
+                ? false
+                : existing.isPublished,
+          publishedAt:
+            normalizedAction === 'publish' ? existing.publishedAt ?? new Date() : existing.publishedAt,
+          publishedBy: normalizedAction === 'publish' ? session.user.id : existing.publishedBy,
+          reviewComment,
+          updatedBy: session.user.id,
+          updatedAt: new Date()
+        })
+        .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)));
+    }
+
+    const detailRow = await getOnlineLessonByIdForAccess({
+      id,
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions
+    });
+
+    if (!detailRow) {
+      throw new Error('ไม่พบข้อมูลบทเรียนออนไลน์หลังอัปเดต');
+    }
+
+    const serializedLesson = serializeOnlineLesson(detailRow);
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ONLINE_LESSONS,
+      action: AUDIT_ACTION.ONLINE_LESSON_UPDATE,
+      entityName: detailRow.title,
+      entityId: detailRow.id,
+      oldValue: toAuditValue(previousSerialized),
+      newValue: toAuditValue(serializedLesson),
+      ...requestMetadata
+    });
+
+    if (multipartAction === 'draft') {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ONLINE_LESSONS,
+        action: AUDIT_ACTION.ONLINE_LESSON_DRAFT_SAVED,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedLesson),
+        ...requestMetadata
+      });
+    }
+
+    if (existing.status !== 'pending_review' && nextStatus === 'pending_review') {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ONLINE_LESSONS,
+        action: AUDIT_ACTION.ONLINE_LESSON_SUBMIT,
+        entityName: detailRow.title,
+        entityId: detailRow.id,
+        oldValue: toAuditValue(previousSerialized),
+        newValue: toAuditValue(serializedLesson),
+        ...requestMetadata
+      });
+
+      const reviewerIds = await getOnlineLessonReviewRecipientIds({
+        organizationId: organization.id,
+        excludeUserIds: [session.user.id]
+      });
+
+      await Promise.all(
+        reviewerIds.map((userId) =>
+          createContentWorkflowNotification({
+            organizationId: organization.id,
+            userId,
+            title: `มีบทเรียนใหม่รอตรวจสอบ: ${detailRow.title}`,
+            message: 'มีการส่งบทเรียนออนไลน์เข้าสู่คิวตรวจสอบ กรุณาเปิดเพื่อตรวจสอบและอนุมัติ',
+            type: 'CONTENT_SUBMITTED',
+            referenceId: detailRow.id,
+            referenceType: 'content_submission'
+          })
+        )
+      );
+    }
+
+    if (existing.status !== 'approved' && nextStatus === 'approved') {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `บทเรียนได้รับการอนุมัติ: ${detailRow.title}`,
+        message: buildWorkflowMessage(reviewComment, 'บทเรียนของคุณผ่านการอนุมัติแล้ว'),
+        type: 'CONTENT_APPROVED',
+        referenceId: detailRow.id,
+        referenceType: 'content_approval'
+      });
+    }
+
+    if (existing.status !== 'returned' && nextStatus === 'returned') {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `บทเรียนถูกส่งกลับแก้ไข: ${detailRow.title}`,
+        message: buildWorkflowMessage(reviewComment, 'กรุณาปรับแก้และส่งตรวจสอบอีกครั้ง'),
+        type: 'CONTENT_RETURNED',
+        referenceId: detailRow.id,
+        referenceType: 'content_approval'
+      });
+    }
+
+    if (existing.status !== 'rejected' && nextStatus === 'rejected') {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `บทเรียนไม่ผ่านการอนุมัติ: ${detailRow.title}`,
+        message: buildWorkflowMessage(reviewComment, 'กรุณาปรับแก้ก่อนส่งใหม่'),
+        type: 'CONTENT_REJECTED',
+        referenceId: detailRow.id,
+        referenceType: 'content_approval'
+      });
+    }
+
+    if (existing.status !== 'published' && nextStatus === 'published') {
+      await createContentWorkflowNotification({
+        organizationId: organization.id,
+        userId: detailRow.createdBy,
+        title: `บทเรียนถูกเผยแพร่แล้ว: ${detailRow.title}`,
+        message: 'บทเรียนของคุณถูกเผยแพร่เรียบร้อยแล้ว',
+        type: 'CONTENT_PUBLISHED',
+        referenceId: detailRow.id,
+        referenceType: 'content_published'
+      });
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: successMessage,
+      online_lesson: serializedLesson
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && !error.message.includes('Database')) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    console.error('Failed to update online lesson', error);
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}
+
+export async function DELETE(
+  _request: NextRequest,
+  context: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { id: rawId } = await context.params;
+    const id = parseId(rawId);
+
+    const [existing] = await db
+      .select()
+      .from(onlineLessons)
+      .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)))
+      .limit(1);
+
+    if (!existing) {
+      return NextResponse.json({ message: 'ไม่พบบทเรียนออนไลน์' }, { status: 404 });
+    }
+
+    if (
+      !canDeleteContent({
+        module: 'online_lesson',
+        permissions: session.user.effectivePermissions,
+        status: existing.status,
+        isOwner: existing.createdBy === session.user.id
+      })
+    ) {
+      return NextResponse.json({ message: 'ไม่มีสิทธิ์ลบบทเรียนนี้' }, { status: 403 });
+    }
+
+    await db
+      .delete(onlineLessons)
+      .where(and(eq(onlineLessons.id, id), eq(onlineLessons.organizationId, organization.id)));
+
+    for (const storageKey of [
+      existing.videoStorageKey,
+      existing.attachmentStorageKey,
+      existing.thumbnailStorageKey
+    ]) {
+      if (storageKey) {
+        await deleteStoredOnlineLessonAsset(storageKey);
+      }
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: 'ลบบทเรียนออนไลน์เรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && !error.message.includes('Database')) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    console.error('Failed to delete online lesson', error);
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}

src/app/api/online-lessons/route.ts

@@ -0,0 +1,377 @@
+import { eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { onlineLessons } from '@/db/schema';
+import {
+  canCreateContent,
+  canTransitionContent,
+  getNextContentStatus
+} from '@/features/content-approval/lib/workflow';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  onlineLessonDraftActionSchema,
+  onlineLessonDraftSchema,
+  validateOnlineLessonReadyForReview
+} from '@/features/online-lessons/schemas/online-lesson';
+import {
+  getOnlineLessonReviewRecipientIds,
+  listOnlineLessonsForAccess,
+  serializeOnlineLesson
+} from '@/features/online-lessons/server/online-lesson-data';
+import { normalizeOnlineLessonCategory } from '@/features/online-lessons/constants/categories';
+import { createContentWorkflowNotification } from '@/features/notifications/server/notification-service';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { getDatabaseErrorMessage } from '@/lib/db-errors';
+import { db } from '@/lib/db';
+import {
+  ONLINE_LESSON_ACCEPTED_ATTACHMENT_TYPES,
+  ONLINE_LESSON_ACCEPTED_THUMBNAIL_TYPES,
+  ONLINE_LESSON_ACCEPTED_VIDEO_TYPES,
+  ONLINE_LESSON_MAX_ATTACHMENT_SIZE,
+  ONLINE_LESSON_MAX_THUMBNAIL_SIZE,
+  ONLINE_LESSON_MAX_VIDEO_SIZE,
+  saveOnlineLessonAttachment,
+  saveOnlineLessonThumbnail,
+  saveOnlineLessonVideo
+} from '@/lib/online-lesson-storage';
+
+function parseBooleanValue(value: FormDataEntryValue | null) {
+  return value === 'true';
+}
+
+function normalizeTextValue(value: FormDataEntryValue | null) {
+  if (typeof value !== 'string') return '';
+  return value.trim();
+}
+
+function validateOptionalFile({
+  file,
+  acceptedTypes,
+  maxSize,
+  errorMessage,
+  sizeErrorMessage
+}: {
+  file: File | null;
+  acceptedTypes: readonly string[];
+  maxSize: number;
+  errorMessage: string;
+  sizeErrorMessage: string;
+}) {
+  if (!file || file.size === 0) return null;
+
+  if (!acceptedTypes.includes(file.type)) {
+    throw new Error(errorMessage);
+  }
+
+  if (file.size > maxSize) {
+    throw new Error(sizeErrorMessage);
+  }
+
+  return file;
+}
+
+async function parseOnlineLessonFormData(request: NextRequest) {
+  const formData = await request.formData();
+  const rawValues = {
+    title: String(formData.get('title') ?? ''),
+    description: String(formData.get('description') ?? ''),
+    category: normalizeOnlineLessonCategory(String(formData.get('category') ?? '')),
+    videoUrl: normalizeTextValue(formData.get('videoUrl')) || undefined
+  };
+
+  const parsedValues = onlineLessonDraftSchema.safeParse(rawValues);
+  if (!parsedValues.success) {
+    throw new Error(parsedValues.error.issues[0]?.message ?? 'ข้อมูลบทเรียนออนไลน์ไม่ถูกต้อง');
+  }
+
+  const parsedAction = onlineLessonDraftActionSchema.safeParse(
+    String(formData.get('action') ?? 'draft')
+  );
+  if (!parsedAction.success) {
+    throw new Error('คำสั่งการบันทึกบทเรียนไม่ถูกต้อง');
+  }
+
+  return {
+    action: parsedAction.data,
+    values: parsedValues.data,
+    removeVideoFile: parseBooleanValue(formData.get('removeVideoFile')),
+    removeAttachment: parseBooleanValue(formData.get('removeAttachment')),
+    removeThumbnail: parseBooleanValue(formData.get('removeThumbnail')),
+    videoFile: validateOptionalFile({
+      file: formData.get('videoFile') as File | null,
+      acceptedTypes: ONLINE_LESSON_ACCEPTED_VIDEO_TYPES,
+      maxSize: ONLINE_LESSON_MAX_VIDEO_SIZE,
+      errorMessage: 'รองรับไฟล์วิดีโอ MP4, WEBM และ MOV เท่านั้น',
+      sizeErrorMessage: 'ไฟล์วิดีโอต้องมีขนาดไม่เกิน 200MB'
+    }),
+    attachmentFile: validateOptionalFile({
+      file: formData.get('attachmentFile') as File | null,
+      acceptedTypes: ONLINE_LESSON_ACCEPTED_ATTACHMENT_TYPES,
+      maxSize: ONLINE_LESSON_MAX_ATTACHMENT_SIZE,
+      errorMessage: 'ไฟล์แนบไม่อยู่ในรูปแบบที่รองรับ',
+      sizeErrorMessage: 'ไฟล์แนบต้องมีขนาดไม่เกิน 20MB'
+    }),
+    thumbnailFile: validateOptionalFile({
+      file: formData.get('thumbnailFile') as File | null,
+      acceptedTypes: ONLINE_LESSON_ACCEPTED_THUMBNAIL_TYPES,
+      maxSize: ONLINE_LESSON_MAX_THUMBNAIL_SIZE,
+      errorMessage: 'รูปปกต้องเป็น JPG, PNG หรือ WEBP เท่านั้น',
+      sizeErrorMessage: 'รูปปกต้องมีขนาดไม่เกิน 5MB'
+    })
+  };
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const { searchParams } = request.nextUrl;
+
+    const result = await listOnlineLessonsForAccess({
+      organizationId: organization.id,
+      permissions: session.user.effectivePermissions,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 12),
+        search: searchParams.get('search') ?? undefined,
+        status: (searchParams.get('status') as
+          | 'draft'
+          | 'pending_review'
+          | 'approved'
+          | 'published'
+          | 'returned'
+          | 'rejected'
+          | 'archived'
+          | null) ?? undefined,
+        category: normalizeOnlineLessonCategory(searchParams.get('category')) ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดบทเรียนออนไลน์เรียบร้อยแล้ว',
+      total_online_lessons: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      categories: result.categories,
+      online_lessons: result.onlineLessons
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดบทเรียนออนไลน์ได้' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { action, values, videoFile, attachmentFile, thumbnailFile } =
+      await parseOnlineLessonFormData(request);
+    const permissions = session.user.effectivePermissions;
+
+    if (!canCreateContent('online_lesson', permissions)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const wantsSubmit = action === 'submit';
+    if (
+      wantsSubmit &&
+      !canTransitionContent({
+        module: 'online_lesson',
+        action: 'submit',
+        currentStatus: 'draft',
+        permissions,
+        isOwner: true
+      })
+    ) {
+      return NextResponse.json({ message: 'ไม่มีสิทธิ์ส่งบทเรียนเพื่อตรวจสอบ' }, { status: 403 });
+    }
+
+    if (wantsSubmit) {
+      validateOnlineLessonReadyForReview({
+        values,
+        hasThumbnailSource: Boolean(thumbnailFile)
+      });
+    }
+
+    const initialStatus = wantsSubmit ? getNextContentStatus('submit') : 'draft';
+
+    const [created] = await db
+      .insert(onlineLessons)
+      .values({
+        organizationId: organization.id,
+        title: values.title.trim(),
+        description: values.description?.trim() || null,
+        category: values.category?.trim() || null,
+        videoUrl: values.videoUrl?.trim() || null,
+        status: initialStatus,
+        submittedAt: wantsSubmit ? new Date() : null,
+        submittedBy: wantsSubmit ? session.user.id : null,
+        isPublished: false,
+        publishedAt: null,
+        createdBy: session.user.id,
+        updatedBy: session.user.id
+      })
+      .returning();
+
+    let record = created;
+
+    if (videoFile) {
+      const storedVideo = await saveOnlineLessonVideo({
+        file: videoFile,
+        organizationId: organization.id,
+        lessonId: created.id
+      });
+
+      [record] = await db
+        .update(onlineLessons)
+        .set({
+          videoFileName: storedVideo.fileName,
+          videoFileType: storedVideo.fileType,
+          videoFileSize: storedVideo.fileSize,
+          videoStorageKey: storedVideo.storageKey,
+          videoFileUrl: storedVideo.fileUrl,
+          updatedAt: new Date(),
+          updatedBy: session.user.id
+        })
+        .where(eq(onlineLessons.id, created.id))
+        .returning();
+    }
+
+    if (attachmentFile) {
+      const storedAttachment = await saveOnlineLessonAttachment({
+        file: attachmentFile,
+        organizationId: organization.id,
+        lessonId: created.id
+      });
+
+      [record] = await db
+        .update(onlineLessons)
+        .set({
+          attachmentFileName: storedAttachment.fileName,
+          attachmentFileType: storedAttachment.fileType,
+          attachmentFileSize: storedAttachment.fileSize,
+          attachmentStorageKey: storedAttachment.storageKey,
+          attachmentFileUrl: storedAttachment.fileUrl,
+          updatedAt: new Date(),
+          updatedBy: session.user.id
+        })
+        .where(eq(onlineLessons.id, created.id))
+        .returning();
+    }
+
+    if (thumbnailFile) {
+      const storedThumbnail = await saveOnlineLessonThumbnail({
+        file: thumbnailFile,
+        organizationId: organization.id,
+        lessonId: created.id
+      });
+
+      [record] = await db
+        .update(onlineLessons)
+        .set({
+          thumbnailFileName: storedThumbnail.fileName,
+          thumbnailFileType: storedThumbnail.fileType,
+          thumbnailFileSize: storedThumbnail.fileSize,
+          thumbnailStorageKey: storedThumbnail.storageKey,
+          thumbnailUrl: storedThumbnail.fileUrl,
+          updatedAt: new Date(),
+          updatedBy: session.user.id
+        })
+        .where(eq(onlineLessons.id, created.id))
+        .returning();
+    }
+
+    const serializedLesson = serializeOnlineLesson({
+      ...record,
+      createdByName: session.user.name ?? session.user.email ?? null,
+      updatedByName: session.user.name ?? session.user.email ?? null
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.ONLINE_LESSONS,
+      action: AUDIT_ACTION.ONLINE_LESSON_CREATE,
+      entityName: record.title,
+      entityId: record.id,
+      newValue: toAuditValue(serializedLesson),
+      ...requestMetadata
+    });
+
+    if (wantsSubmit) {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ONLINE_LESSONS,
+        action: AUDIT_ACTION.ONLINE_LESSON_SUBMIT,
+        entityName: record.title,
+        entityId: record.id,
+        newValue: toAuditValue(serializedLesson),
+        ...requestMetadata
+      });
+
+      const reviewerIds = await getOnlineLessonReviewRecipientIds({
+        organizationId: organization.id,
+        excludeUserIds: [session.user.id]
+      });
+
+      await Promise.all(
+        reviewerIds.map((userId) =>
+          createContentWorkflowNotification({
+            organizationId: organization.id,
+            userId,
+            title: `มีบทเรียนใหม่รอตรวจสอบ: ${record.title}`,
+            message: 'มีการส่งบทเรียนออนไลน์เข้าสู่คิวตรวจสอบ กรุณาเปิดเพื่อตรวจสอบและอนุมัติ',
+            type: 'CONTENT_SUBMITTED',
+            referenceId: record.id,
+            referenceType: 'content_submission'
+          })
+        )
+      );
+    } else {
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.ONLINE_LESSONS,
+        action: AUDIT_ACTION.ONLINE_LESSON_DRAFT_SAVED,
+        entityName: record.title,
+        entityId: record.id,
+        newValue: toAuditValue(serializedLesson),
+        ...requestMetadata
+      });
+    }
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: wantsSubmit
+          ? 'ส่งบทเรียนเพื่อตรวจสอบเรียบร้อยแล้ว'
+          : 'บันทึกบทเรียนฉบับร่างเรียบร้อยแล้ว',
+        online_lesson: serializedLesson
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && !error.message.includes('Database')) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    console.error('Failed to create online lesson', error);
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}

src/app/api/organizations/[id]/route.ts

@@ -0,0 +1,96 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { ZodError } from 'zod';
+import { organizerSchema } from '@/features/organizers/schemas/organizer';
+import {
+  softDeleteOrganizerRecord,
+  updateOrganizerRecord
+} from '@/features/organizers/server/organizer-data';
+import { AuthError, requireSuperAdmin } from '@/lib/auth/session';
+
+type RouteContext = {
+  params: Promise<{
+    id: string;
+  }>;
+};
+
+export async function PATCH(request: NextRequest, context: RouteContext) {
+  try {
+    const session = await requireSuperAdmin();
+    const { id } = await context.params;
+    const body = organizerSchema.parse(await request.json());
+
+    await updateOrganizerRecord({
+      organizationId: id,
+      actorUserId: session.user.id,
+      payload: body
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Organizer updated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid organizer data' },
+        { status: 400 }
+      );
+    }
+
+    if (error instanceof Error) {
+      if (error.message === 'DUPLICATE_NAME') {
+        return NextResponse.json({ message: 'Organizer name already exists' }, { status: 409 });
+      }
+
+      if (error.message === 'NOT_FOUND') {
+        return NextResponse.json({ message: 'Organizer not found' }, { status: 404 });
+      }
+
+      if (error.message === 'INACTIVE_ORGANIZER') {
+        return NextResponse.json(
+          { message: 'Inactive organizers cannot be updated' },
+          { status: 400 }
+        );
+      }
+    }
+
+    return NextResponse.json({ message: 'Unable to update organizer' }, { status: 500 });
+  }
+}
+
+export async function DELETE(_request: NextRequest, context: RouteContext) {
+  try {
+    const session = await requireSuperAdmin();
+    const { id } = await context.params;
+
+    await softDeleteOrganizerRecord({
+      organizationId: id,
+      actorUserId: session.user.id
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Organizer disabled successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      if (error.message === 'NOT_FOUND') {
+        return NextResponse.json({ message: 'Organizer not found' }, { status: 404 });
+      }
+
+      if (error.message === 'INACTIVE_ORGANIZER') {
+        return NextResponse.json({ message: 'Organizer is already inactive' }, { status: 400 });
+      }
+    }
+
+    return NextResponse.json({ message: 'Unable to disable organizer' }, { status: 500 });
+  }
+}

src/app/api/organizations/active/route.ts

@@ -0,0 +1,73 @@
+import { and, eq, isNull } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { memberships, organizations, users } from '@/db/schema';
+import { getDefaultPermissionsForRole, isHRD, isSuperAdmin } from '@/lib/auth/roles';
+import { db } from '@/lib/db';
+import { AuthError, requireSession } from '@/lib/auth/session';
+
+export async function PATCH(request: NextRequest) {
+  try {
+    const session = await requireSession();
+    const body = (await request.json()) as { organizationId?: string };
+    const organizationId = body.organizationId;
+
+    if (!organizationId) {
+      return NextResponse.json({ message: 'organizationId is required' }, { status: 400 });
+    }
+
+    const targetOrganization = await db.query.organizations.findFirst({
+      where: and(
+        eq(organizations.id, organizationId),
+        eq(organizations.isActive, true),
+        isNull(organizations.deletedAt)
+      )
+    });
+
+    if (!targetOrganization) {
+      return NextResponse.json({ message: 'Organizer not found or inactive' }, { status: 404 });
+    }
+
+    const membership = await db.query.memberships.findFirst({
+      where: and(
+        eq(memberships.userId, session.user.id),
+        eq(memberships.organizationId, organizationId)
+      )
+    });
+
+    const canSwitchAnyOrganization =
+      isSuperAdmin(session.user.systemRole) ||
+      isHRD({
+        businessRole: session.user.businessRole,
+        systemRole: session.user.systemRole,
+        membershipRole: session.user.membershipRole,
+        role: session.user.role
+      });
+
+    if (!membership && !canSwitchAnyOrganization) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    if (!membership && canSwitchAnyOrganization) {
+      await db.insert(memberships).values({
+        id: crypto.randomUUID(),
+        userId: session.user.id,
+        organizationId,
+        role: 'admin',
+        permissions: getDefaultPermissionsForRole('admin')
+      });
+    }
+
+    await db
+      .update(users)
+      .set({ activeOrganizationId: organizationId })
+      .where(eq(users.id, session.user.id));
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to switch organization' }, { status: 500 });
+  }
+}

src/app/api/organizations/route.ts

@@ -0,0 +1,124 @@
+import { and, eq, isNull } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { ZodError } from 'zod';
+import { memberships, organizations, users } from '@/db/schema';
+import { organizerSchema } from '@/features/organizers/schemas/organizer';
+import { createOrganizerRecord, listOrganizers } from '@/features/organizers/server/organizer-data';
+import { getDefaultPermissionsForRole, isHRD, isSuperAdmin } from '@/lib/auth/roles';
+import { db } from '@/lib/db';
+import { AuthError, requireSession, requireSuperAdmin } from '@/lib/auth/session';
+
+export async function POST(request: NextRequest) {
+  try {
+    const session = await requireSuperAdmin();
+    const body = organizerSchema.parse(await request.json());
+    const organizationId = await createOrganizerRecord({
+      actorUserId: session.user.id,
+      payload: body
+    });
+
+    await db.insert(memberships).values({
+      id: crypto.randomUUID(),
+      userId: session.user.id,
+      organizationId,
+      role: 'admin',
+      permissions: getDefaultPermissionsForRole('admin')
+    });
+
+    await db
+      .update(users)
+      .set({ activeOrganizationId: organizationId })
+      .where(eq(users.id, session.user.id));
+
+    return NextResponse.json({
+      success: true,
+      organizationId
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid organizer data' },
+        { status: 400 }
+      );
+    }
+
+    if (error instanceof Error && error.message === 'DUPLICATE_NAME') {
+      return NextResponse.json({ message: 'Organizer name already exists' }, { status: 409 });
+    }
+
+    return NextResponse.json({ message: 'Unable to create organization' }, { status: 500 });
+  }
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const session = await requireSession();
+    const requestedStatus = request.nextUrl.searchParams.get('status');
+    const canReadAllOrganizers =
+      isSuperAdmin(session.user.systemRole) ||
+      isHRD({
+        businessRole: session.user.businessRole,
+        systemRole: session.user.systemRole,
+        membershipRole: session.user.membershipRole,
+        role: session.user.role
+      });
+
+    const organizersList = canReadAllOrganizers
+      ? await listOrganizers({
+          status:
+            requestedStatus === 'inactive' || requestedStatus === 'all' ? requestedStatus : 'active'
+        })
+      : await db
+          .select({
+            id: organizations.id,
+            name: organizations.name,
+            slug: organizations.slug,
+            imageUrl: organizations.imageUrl,
+            plan: organizations.plan,
+            isActive: organizations.isActive,
+            deletedAt: organizations.deletedAt,
+            deletedBy: organizations.deletedBy,
+            createdBy: organizations.createdBy,
+            createdAt: organizations.createdAt,
+            updatedAt: organizations.updatedAt
+          })
+          .from(organizations)
+          .innerJoin(memberships, eq(memberships.organizationId, organizations.id))
+          .where(
+            and(
+              eq(memberships.userId, session.user.id),
+              eq(organizations.isActive, true),
+              isNull(organizations.deletedAt)
+            )
+          )
+          .then((rows) =>
+            rows.map((row) => ({
+              id: row.id,
+              name: row.name,
+              slug: row.slug,
+              plan: row.plan,
+              is_active: row.isActive,
+              deleted_at: row.deletedAt ? row.deletedAt.toISOString() : null,
+              deleted_by: row.deletedBy,
+              created_by: row.createdBy,
+              created_at: row.createdAt.toISOString(),
+              updated_at: row.updatedAt.toISOString()
+            }))
+          );
+
+    return NextResponse.json({
+      success: true,
+      organizers: organizersList
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load organizers' }, { status: 500 });
+  }
+}

src/app/api/permission-audit-logs/route.ts

@@ -0,0 +1,38 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { listPermissionAuditLogsForOrganization } from '@/features/permission-management/server/permission-audit-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireSuperAdminOrganizationAccess();
+    const result = await listPermissionAuditLogsForOrganization({
+      organizationId: organization.id,
+      filters: {
+        page: Number(request.nextUrl.searchParams.get('page') ?? 1),
+        limit: Number(request.nextUrl.searchParams.get('limit') ?? 10),
+        search: request.nextUrl.searchParams.get('search') ?? undefined,
+        user: request.nextUrl.searchParams.get('user') ?? undefined,
+        action: request.nextUrl.searchParams.get('action') ?? undefined,
+        dateFrom: request.nextUrl.searchParams.get('dateFrom') ?? undefined,
+        dateTo: request.nextUrl.searchParams.get('dateTo') ?? undefined,
+        sort: request.nextUrl.searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Loaded permission audit logs successfully',
+      total_permission_audit_logs: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      permission_audit_logs: result.permissionAuditLogs
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load permission audit logs' }, { status: 500 });
+  }
+}

src/app/api/permission-templates/[id]/activate/route.ts

@@ -0,0 +1,33 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { setPermissionTemplateActiveState } from '@/features/permission-management/server/permission-template-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function POST(request: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const templateId = Number((await params).id);
+    const body = (await request.json().catch(() => ({}))) as { reason?: string };
+    await setPermissionTemplateActiveState({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      templateId,
+      isActive: true,
+      reason: body.reason
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Permission template activated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to activate permission template' }, { status: 500 });
+  }
+}

src/app/api/permission-templates/[id]/clone/route.ts

@@ -0,0 +1,33 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { clonePermissionTemplateForOrganization } from '@/features/permission-management/server/permission-template-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function POST(request: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const templateId = Number((await params).id);
+    const body = (await request.json().catch(() => ({}))) as { reason?: string };
+    const clonedId = await clonePermissionTemplateForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      templateId,
+      reason: body.reason
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Permission template cloned successfully',
+      template_id: clonedId
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && error.message === 'NOT_FOUND') {
+      return NextResponse.json({ message: 'Permission template not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({ message: 'Unable to clone permission template' }, { status: 500 });
+  }
+}

src/app/api/permission-templates/[id]/deactivate/route.ts

@@ -0,0 +1,33 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { setPermissionTemplateActiveState } from '@/features/permission-management/server/permission-template-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function POST(request: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const templateId = Number((await params).id);
+    const body = (await request.json().catch(() => ({}))) as { reason?: string };
+    await setPermissionTemplateActiveState({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      templateId,
+      isActive: false,
+      reason: body.reason
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Permission template deactivated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to deactivate permission template' }, { status: 500 });
+  }
+}

src/app/api/permission-templates/[id]/route.ts

@@ -0,0 +1,107 @@
+import { NextRequest, NextResponse } from 'next/server';
+import {
+  getPermissionTemplateById,
+  softDeletePermissionTemplate,
+  updatePermissionTemplateForOrganization
+} from '@/features/permission-management/server/permission-template-data';
+import { permissionTemplateSchema } from '@/features/permission-management/schemas/permission-template';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+function readTemplateId(value: string) {
+  const templateId = Number(value);
+  if (!Number.isInteger(templateId) || templateId <= 0) {
+    throw new Error('INVALID_TEMPLATE_ID');
+  }
+  return templateId;
+}
+
+export async function GET(_: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { organization } = await requireSuperAdminOrganizationAccess();
+    const templateId = readTemplateId((await params).id);
+    const permissionTemplate = await getPermissionTemplateById({
+      organizationId: organization.id,
+      templateId
+    });
+
+    return NextResponse.json({
+      success: true,
+      permission_template: permissionTemplate
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && error.message === 'NOT_FOUND') {
+      return NextResponse.json({ message: 'Permission template not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({ message: 'Unable to load permission template' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const templateId = readTemplateId((await params).id);
+    const body = permissionTemplateSchema.parse(await request.json());
+    await updatePermissionTemplateForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      templateId,
+      payload: body
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Permission template updated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && error.message === 'NOT_FOUND') {
+      return NextResponse.json({ message: 'Permission template not found' }, { status: 404 });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to update permission template' }, { status: 500 });
+  }
+}
+
+export async function DELETE(request: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const templateId = readTemplateId((await params).id);
+    const body = (await request.json().catch(() => ({}))) as { reason?: string };
+    await softDeletePermissionTemplate({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      templateId,
+      reason: body.reason
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Permission template deleted successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (
+      error instanceof Error &&
+      (error.message === 'NOT_FOUND' || error.message === 'SYSTEM_TEMPLATE_PROTECTED')
+    ) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to delete permission template' }, { status: 500 });
+  }
+}

src/app/api/permission-templates/route.ts

@@ -0,0 +1,70 @@
+import { NextRequest, NextResponse } from 'next/server';
+import {
+  createPermissionTemplateForOrganization,
+  listPermissionTemplatesForOrganization
+} from '@/features/permission-management/server/permission-template-data';
+import { permissionTemplateSchema } from '@/features/permission-management/schemas/permission-template';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireSuperAdminOrganizationAccess();
+    const result = await listPermissionTemplatesForOrganization({
+      organizationId: organization.id,
+      filters: {
+        page: Number(request.nextUrl.searchParams.get('page') ?? 1),
+        limit: Number(request.nextUrl.searchParams.get('limit') ?? 10),
+        search: request.nextUrl.searchParams.get('search') ?? undefined,
+        status: request.nextUrl.searchParams.get('status') ?? undefined,
+        sort: request.nextUrl.searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Loaded permission templates successfully',
+      total_permission_templates: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      permission_templates: result.permissionTemplates
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load permission templates' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const body = permissionTemplateSchema.parse(await request.json());
+    const templateId = await createPermissionTemplateForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      payload: body
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        message: 'Permission template created successfully',
+        template_id: templateId
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to create permission template' }, { status: 500 });
+  }
+}

src/app/api/permissions/catalog/route.ts

@@ -0,0 +1,16 @@
+import { NextResponse } from 'next/server';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+import { getPermissionCatalog } from '@/features/permission-management/server/permission-template-data';
+
+export async function GET() {
+  try {
+    await requireSuperAdminOrganizationAccess();
+    return NextResponse.json(getPermissionCatalog());
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load permission catalog' }, { status: 500 });
+  }
+}

src/app/api/products/[id]/route.ts

@@ -0,0 +1,128 @@
+import { and, eq, type InferSelectModel } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { products } from '@/db/schema';
+import type { ProductMutationPayload } from '@/features/products/api/types';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+function toProductResponse(product: InferSelectModel<typeof products>) {
+  return {
+    id: product.id,
+    organization_id: product.organizationId,
+    photo_url: product.photoUrl,
+    name: product.name,
+    description: product.description,
+    created_at: product.createdAt.toISOString(),
+    price: product.price,
+    category: product.category,
+    updated_at: product.updatedAt.toISOString()
+  };
+}
+
+export async function GET(request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const { id } = await params;
+
+    const product = await db.query.products.findFirst({
+      where: and(eq(products.id, Number(id)), eq(products.organizationId, organization.id))
+    });
+
+    if (!product) {
+      return NextResponse.json(
+        { success: false, message: `Product with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: `Product with ID ${id} found`,
+      product: toProductResponse(product)
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load product' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const { id } = await params;
+    const body = (await request.json()) as ProductMutationPayload;
+
+    const existingProduct = await db.query.products.findFirst({
+      where: and(eq(products.id, Number(id)), eq(products.organizationId, organization.id))
+    });
+
+    if (!existingProduct) {
+      return NextResponse.json(
+        { success: false, message: `Product with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    const [product] = await db
+      .update(products)
+      .set({
+        name: body.name,
+        category: body.category,
+        price: body.price,
+        description: body.description,
+        photoUrl: body.photoDataUrl || existingProduct.photoUrl,
+        updatedAt: new Date()
+      })
+      .where(and(eq(products.id, Number(id)), eq(products.organizationId, organization.id)))
+      .returning();
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Product updated successfully',
+      product: toProductResponse(product)
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to update product' }, { status: 500 });
+  }
+}
+
+export async function DELETE(request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const { id } = await params;
+
+    const [deletedProduct] = await db
+      .delete(products)
+      .where(and(eq(products.id, Number(id)), eq(products.organizationId, organization.id)))
+      .returning({ id: products.id });
+
+    if (!deletedProduct) {
+      return NextResponse.json(
+        { success: false, message: `Product with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: 'Product deleted successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to delete product' }, { status: 500 });
+  }
+}

src/app/api/products/route.ts

@@ -0,0 +1,146 @@
+import { and, asc, count, desc, eq, ilike, inArray, or } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { products } from '@/db/schema';
+import type { ProductMutationPayload } from '@/features/products/api/types';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+const sortMap = {
+  name: products.name,
+  category: products.category,
+  price: products.price,
+  created_at: products.createdAt,
+  updated_at: products.updatedAt
+} as const;
+
+function buildProductImageUrl(name: string) {
+  return `https://placehold.co/120x120/336b4a/ffffff/png?text=${encodeURIComponent(name.slice(0, 12))}`;
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const { searchParams } = request.nextUrl;
+
+    const page = Number(searchParams.get('page') ?? 1);
+    const limit = Number(searchParams.get('limit') ?? 10);
+    const categories = searchParams.get('categories');
+    const search = searchParams.get('search');
+    const sort = searchParams.get('sort');
+    const categoryValues = categories
+      ? categories
+          .split(/[.,]/)
+          .map((value) => value.trim())
+          .filter(Boolean)
+      : [];
+
+    const filters = [
+      eq(products.organizationId, organization.id),
+      ...(categoryValues.length ? [inArray(products.category, categoryValues)] : []),
+      ...(search
+        ? [
+            or(
+              ilike(products.name, `%${search}%`),
+              ilike(products.description, `%${search}%`),
+              ilike(products.category, `%${search}%`)
+            )!
+          ]
+        : [])
+    ];
+
+    const where = filters.length === 1 ? filters[0] : and(...filters);
+
+    const [totalResult] = await db.select({ value: count() }).from(products).where(where);
+
+    let orderByClause = desc(products.createdAt);
+
+    if (sort) {
+      try {
+        const sortItems = JSON.parse(sort) as Array<{ id: keyof typeof sortMap; desc: boolean }>;
+        const primarySort = sortItems[0];
+
+        if (primarySort?.id && sortMap[primarySort.id]) {
+          orderByClause = primarySort.desc
+            ? desc(sortMap[primarySort.id])
+            : asc(sortMap[primarySort.id]);
+        }
+      } catch {
+        orderByClause = desc(products.createdAt);
+      }
+    }
+
+    const offset = (page - 1) * limit;
+    const rows = await db.select().from(products).where(where).orderBy(orderByClause).limit(limit).offset(offset);
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Products loaded successfully',
+      total_products: totalResult?.value ?? 0,
+      offset,
+      limit,
+      products: rows.map((product) => ({
+        id: product.id,
+        organization_id: product.organizationId,
+        photo_url: product.photoUrl,
+        name: product.name,
+        description: product.description,
+        created_at: product.createdAt.toISOString(),
+        price: product.price,
+        category: product.category,
+        updated_at: product.updatedAt.toISOString()
+      }))
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load products' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization } = await requireOrganizationAccess();
+    const body = (await request.json()) as ProductMutationPayload;
+
+    const [product] = await db
+      .insert(products)
+      .values({
+        organizationId: organization.id,
+        name: body.name,
+        category: body.category,
+        price: body.price,
+        description: body.description,
+        photoUrl: body.photoDataUrl || buildProductImageUrl(body.name)
+      })
+      .returning();
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: 'Product created successfully',
+        product: {
+          id: product.id,
+          organization_id: product.organizationId,
+          photo_url: product.photoUrl,
+          name: product.name,
+          description: product.description,
+          created_at: product.createdAt.toISOString(),
+          price: product.price,
+          category: product.category,
+          updated_at: product.updatedAt.toISOString()
+        }
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to create product' }, { status: 500 });
+  }
+}

src/app/api/reports/export/route.ts

@@ -0,0 +1,90 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { AuthError } from '@/lib/auth/session';
+import {
+  createExcelBuffer,
+  createPdfBuffer,
+  getReportsAccess,
+  getReportsDataset,
+  parseReportFilters
+} from '@/features/reports/server/report-data';
+
+const supportedReports = new Set([
+  'employeeTranscript',
+  'trainingMatrix',
+  'departmentSummary',
+  'annualTrainingSummary'
+] as const);
+
+const supportedFormats = new Set(['xlsx', 'pdf'] as const);
+
+type ExportableReport =
+  | 'employeeTranscript'
+  | 'trainingMatrix'
+  | 'departmentSummary'
+  | 'annualTrainingSummary';
+
+type ExportFormat = 'xlsx' | 'pdf';
+
+export async function GET(request: NextRequest) {
+  try {
+    const report = request.nextUrl.searchParams.get('report');
+    const format = request.nextUrl.searchParams.get('format');
+
+    if (!report || !supportedReports.has(report as ExportableReport)) {
+      return NextResponse.json({ message: 'Unsupported report type' }, { status: 400 });
+    }
+
+    if (!format || !supportedFormats.has(format as ExportFormat)) {
+      return NextResponse.json({ message: 'Unsupported export format' }, { status: 400 });
+    }
+
+    const filters = parseReportFilters({
+      year: request.nextUrl.searchParams.get('year') ?? undefined,
+      company: request.nextUrl.searchParams.get('company') ?? undefined,
+      departmentId: request.nextUrl.searchParams.get('departmentId') ?? undefined
+    });
+
+    const access = await getReportsAccess();
+
+    if (!access.canView) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    if (!access.canViewAll && report !== 'employeeTranscript') {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const { role: _role, ...dataset } = await getReportsDataset(filters, access);
+    const today = new Date().toISOString().slice(0, 10);
+
+    if (format === 'xlsx') {
+      const buffer = createExcelBuffer(report as ExportableReport, dataset);
+
+      return new NextResponse(buffer, {
+        status: 200,
+        headers: {
+          'Content-Type':
+            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+          'Content-Disposition': `attachment; filename="${report}-${today}.xlsx"`
+        }
+      });
+    }
+
+    const buffer = await createPdfBuffer(report as ExportableReport, dataset);
+
+    return new NextResponse(buffer, {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/pdf',
+        'Content-Disposition': `attachment; filename="${report}-${today}.pdf"`
+      }
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('Failed to export report', error);
+    return NextResponse.json({ message: 'Failed to export report' }, { status: 500 });
+  }
+}

src/app/api/training-matrix/[id]/route.ts

@@ -0,0 +1,165 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingMatrices } from '@/db/schema';
+import type { TrainingMatrixMutationPayload } from '@/features/training-matrix/api/types';
+import {
+  canManageTrainingMatrix,
+  getTrainingMatrixByIdForOrganization,
+  normalizeTrainingMatrixPayload,
+  serializeTrainingMatrix
+} from '@/features/training-matrix/server/training-matrix-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function GET(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const { id } = await params;
+    const matrix = await getTrainingMatrixByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id
+    });
+
+    if (!matrix) {
+      return NextResponse.json(
+        { success: false, message: `Training matrix with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: `Training matrix with ID ${id} found`,
+      training_matrix: serializeTrainingMatrix(matrix)
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load training matrix' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const { id } = await params;
+    const body = normalizeTrainingMatrixPayload(
+      (await request.json()) as TrainingMatrixMutationPayload
+    );
+
+    const existingMatrix = await getTrainingMatrixByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id
+    });
+
+    if (!existingMatrix) {
+      return NextResponse.json(
+        { success: false, message: `Training matrix with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    const [matrix] = await db
+      .update(trainingMatrices)
+      .set({
+        departmentId: body.departmentId,
+        positionId: body.positionId,
+        courseId: body.courseId,
+        isRequired: body.isRequired,
+        renewalPeriodMonths: body.renewalPeriodMonths,
+        note: body.note,
+        updatedAt: new Date()
+      })
+      .where(
+        and(eq(trainingMatrices.id, Number(id)), eq(trainingMatrices.organizationId, organization.id))
+      )
+      .returning();
+
+    const updatedMatrix = await getTrainingMatrixByIdForOrganization({
+      id: matrix.id,
+      organizationId: organization.id
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Training matrix updated successfully',
+      training_matrix: updatedMatrix
+        ? serializeTrainingMatrix(updatedMatrix)
+        : serializeTrainingMatrix({
+            id: matrix.id,
+            organizationId: matrix.organizationId,
+            departmentId: matrix.departmentId,
+            departmentName: existingMatrix.departmentName,
+            positionId: matrix.positionId,
+            positionName: existingMatrix.positionName,
+            courseId: matrix.courseId,
+            courseName: existingMatrix.courseName,
+            courseCategory: existingMatrix.courseCategory,
+            courseCertificateValidityMonths: existingMatrix.courseCertificateValidityMonths,
+            isRequired: matrix.isRequired,
+            renewalPeriodMonths: matrix.renewalPeriodMonths,
+            note: matrix.note,
+            createdAt: matrix.createdAt,
+            updatedAt: matrix.updatedAt
+          })
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to update training matrix' }, { status: 500 });
+  }
+}
+
+export async function DELETE(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const { id } = await params;
+    const [deletedMatrix] = await db
+      .delete(trainingMatrices)
+      .where(
+        and(eq(trainingMatrices.id, Number(id)), eq(trainingMatrices.organizationId, organization.id))
+      )
+      .returning({ id: trainingMatrices.id });
+
+    if (!deletedMatrix) {
+      return NextResponse.json(
+        { success: false, message: `Training matrix with ID ${id} not found` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: 'Training matrix deleted successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to delete training matrix' }, { status: 500 });
+  }
+}

src/app/api/training-matrix/compliance/route.ts

@@ -0,0 +1,31 @@
+import { NextResponse } from 'next/server';
+import {
+  canManageTrainingMatrix,
+  getTrainingMatrixComplianceForOrganization
+} from '@/features/training-matrix/server/training-matrix-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET() {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const employees = await getTrainingMatrixComplianceForOrganization(organization.id);
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Training compliance loaded successfully',
+      employees
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load training compliance' }, { status: 500 });
+  }
+}

src/app/api/training-matrix/options/route.ts

@@ -0,0 +1,25 @@
+import { NextResponse } from 'next/server';
+import {
+  canManageTrainingMatrix,
+  getTrainingMatrixOptions
+} from '@/features/training-matrix/server/training-matrix-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET() {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const options = await getTrainingMatrixOptions(organization.id);
+    return NextResponse.json(options);
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load training matrix options' }, { status: 500 });
+  }
+}

src/app/api/training-matrix/route.ts

@@ -0,0 +1,114 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingMatrices } from '@/db/schema';
+import type { TrainingMatrixMutationPayload } from '@/features/training-matrix/api/types';
+import {
+  canManageTrainingMatrix,
+  listTrainingMatricesForOrganization,
+  normalizeTrainingMatrixPayload,
+  serializeTrainingMatrix
+} from '@/features/training-matrix/server/training-matrix-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const { searchParams } = request.nextUrl;
+    const result = await listTrainingMatricesForOrganization({
+      organizationId: organization.id,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        search: searchParams.get('search') ?? undefined,
+        sort: searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Training matrix loaded successfully',
+      total_training_matrices: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      training_matrices: result.matrices
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load training matrix' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, membership } = await requireOrganizationAccess();
+
+    if (!canManageTrainingMatrix(membership.role)) {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    const body = normalizeTrainingMatrixPayload(
+      (await request.json()) as TrainingMatrixMutationPayload
+    );
+
+    const [matrix] = await db
+      .insert(trainingMatrices)
+      .values({
+        organizationId: organization.id,
+        departmentId: body.departmentId,
+        positionId: body.positionId,
+        courseId: body.courseId,
+        isRequired: body.isRequired,
+        renewalPeriodMonths: body.renewalPeriodMonths,
+        note: body.note
+      })
+      .returning();
+
+    const fullMatrix = await listTrainingMatricesForOrganization({
+      organizationId: organization.id,
+      filters: { page: 1, limit: 1, search: String(matrix.id) }
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: 'Training matrix created successfully',
+        training_matrix:
+          fullMatrix.matrices.find((item) => item.id === matrix.id) ??
+          serializeTrainingMatrix({
+            id: matrix.id,
+            organizationId: matrix.organizationId,
+            departmentId: matrix.departmentId,
+            departmentName: null,
+            positionId: matrix.positionId,
+            positionName: null,
+            courseId: matrix.courseId,
+            courseName: '',
+            courseCategory: '',
+            courseCertificateValidityMonths: null,
+            isRequired: matrix.isRequired,
+            renewalPeriodMonths: matrix.renewalPeriodMonths,
+            note: matrix.note,
+            createdAt: matrix.createdAt,
+            updatedAt: matrix.updatedAt
+          })
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to create training matrix' }, { status: 500 });
+  }
+}

src/app/api/training-policies/[id]/activate/route.ts

@@ -0,0 +1,95 @@
+import { and, eq, ne } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingPolicies } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  getTrainingPolicyByIdForOrganization,
+  serializeTrainingPolicy
+} from '@/features/training-policy/server/training-policy-data';
+import { AuthError, requirePermission } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requirePermission('training_policy:write');
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const policyId = Number(id);
+    const policy = await getTrainingPolicyByIdForOrganization({
+      id: policyId,
+      organizationId: organization.id
+    });
+
+    if (!policy) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบนโยบายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    await db.transaction(async (tx) => {
+      await tx
+        .update(trainingPolicies)
+        .set({
+          isActive: false,
+          updatedAt: new Date()
+        })
+        .where(
+          and(
+            eq(trainingPolicies.organizationId, organization.id),
+            ne(trainingPolicies.id, policyId)
+          )
+        );
+
+      await tx
+        .update(trainingPolicies)
+        .set({
+          isActive: true,
+          updatedAt: new Date()
+        })
+        .where(and(eq(trainingPolicies.id, policyId), eq(trainingPolicies.organizationId, organization.id)));
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_POLICY,
+      action: AUDIT_ACTION.ACTIVATE,
+      entityName: `ปี ${policy.year}`,
+      entityId: policy.id,
+      oldValue: toAuditValue(serializeTrainingPolicy(policy)),
+      newValue: toAuditValue(
+        serializeTrainingPolicy(
+          {
+            ...policy,
+            isActive: true,
+            updatedAt: new Date()
+          },
+          { updatedByName: session.user.name ?? null }
+        )
+      ),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'เปิดใช้งานนโยบายการอบรมเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('POST /api/training-policies/[id]/activate failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถเปิดใช้งานนโยบายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-policies/[id]/clone/route.ts

@@ -0,0 +1,86 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingPolicies } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  getNextTrainingPolicyYearForClone,
+  getTrainingPolicyByIdForOrganization,
+  serializeTrainingPolicy
+} from '@/features/training-policy/server/training-policy-data';
+import { AuthError, requirePermission } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requirePermission('training_policy:write');
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const policyId = Number(id);
+    const sourcePolicy = await getTrainingPolicyByIdForOrganization({
+      id: policyId,
+      organizationId: organization.id
+    });
+
+    if (!sourcePolicy) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบนโยบายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    const nextYear = await getNextTrainingPolicyYearForClone({
+      organizationId: organization.id,
+      baseYear: sourcePolicy.year
+    });
+
+    const [clonedPolicy] = await db
+      .insert(trainingPolicies)
+      .values({
+        organizationId: organization.id,
+        year: nextYear,
+        totalHours: sourcePolicy.totalHours,
+        kHours: sourcePolicy.kHours,
+        sHours: sourcePolicy.sHours,
+        aHours: sourcePolicy.aHours,
+        isActive: false
+      })
+      .returning();
+
+    const serializedPolicy = serializeTrainingPolicy(clonedPolicy, {
+      updatedByName: session.user.name ?? null
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_POLICY,
+      action: AUDIT_ACTION.CLONE,
+      entityName: `ปี ${clonedPolicy.year}`,
+      entityId: clonedPolicy.id,
+      oldValue: toAuditValue(serializeTrainingPolicy(sourcePolicy)),
+      newValue: toAuditValue(serializedPolicy),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โคลนนโยบายการอบรมเรียบร้อยแล้ว',
+      policy_id: clonedPolicy.id
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('POST /api/training-policies/[id]/clone failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถโคลนนโยบายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-policies/[id]/deactivate/route.ts

@@ -0,0 +1,80 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingPolicies } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  getTrainingPolicyByIdForOrganization,
+  serializeTrainingPolicy
+} from '@/features/training-policy/server/training-policy-data';
+import { AuthError, requirePermission } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requirePermission('training_policy:write');
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const policyId = Number(id);
+    const policy = await getTrainingPolicyByIdForOrganization({
+      id: policyId,
+      organizationId: organization.id
+    });
+
+    if (!policy) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบนโยบายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    await db
+      .update(trainingPolicies)
+      .set({
+        isActive: false,
+        updatedAt: new Date()
+      })
+      .where(and(eq(trainingPolicies.id, policyId), eq(trainingPolicies.organizationId, organization.id)));
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_POLICY,
+      action: AUDIT_ACTION.DEACTIVATE,
+      entityName: `ปี ${policy.year}`,
+      entityId: policy.id,
+      oldValue: toAuditValue(serializeTrainingPolicy(policy)),
+      newValue: toAuditValue(
+        serializeTrainingPolicy(
+          {
+            ...policy,
+            isActive: false,
+            updatedAt: new Date()
+          },
+          { updatedByName: session.user.name ?? null }
+        )
+      ),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'ปิดใช้งานนโยบายการอบรมเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('POST /api/training-policies/[id]/deactivate failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถปิดใช้งานนโยบายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-policies/[id]/history/route.ts

@@ -0,0 +1,31 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { listTrainingPolicyHistoryForOrganization } from '@/features/training-policy/server/training-policy-data';
+import { AuthError, requirePermission } from '@/lib/auth/session';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requirePermission('training_policy:read');
+    const { id } = await params;
+    const policyId = Number(id);
+    const history = await listTrainingPolicyHistoryForOrganization({
+      organizationId: organization.id,
+      policyId
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดประวัตินโยบายการอบรมเรียบร้อยแล้ว',
+      history
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('GET /api/training-policies/[id]/history failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถโหลดประวัตินโยบายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-policies/[id]/route.ts

@@ -0,0 +1,155 @@
+import { and, eq, ne } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingPolicies } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import type { TrainingPolicyMutationPayload } from '@/features/training-policy/api/types';
+import {
+  getTrainingPolicyByIdForOrganization,
+  getTrainingPolicyByYearForOrganization,
+  getTrainingPolicyDetailForOrganization,
+  normalizeTrainingPolicyPayload,
+  serializeTrainingPolicy
+} from '@/features/training-policy/server/training-policy-data';
+import { AuthError, requirePermission } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  try {
+    const { organization } = await requirePermission('training_policy:read');
+    const { id } = await params;
+    const policyId = Number(id);
+    const policy = await getTrainingPolicyDetailForOrganization({
+      id: policyId,
+      organizationId: organization.id
+    });
+
+    if (!policy) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบนโยบายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดรายละเอียดนโยบายการอบรมเรียบร้อยแล้ว',
+      policy
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('GET /api/training-policies/[id] failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถโหลดนโยบายการอบรมได้' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session } = await requirePermission('training_policy:write');
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const policyId = Number(id);
+    const body = normalizeTrainingPolicyPayload(
+      (await request.json()) as TrainingPolicyMutationPayload
+    );
+
+    const existingPolicy = await getTrainingPolicyByIdForOrganization({
+      id: policyId,
+      organizationId: organization.id
+    });
+
+    if (!existingPolicy) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบนโยบายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    const duplicatePolicy = await getTrainingPolicyByYearForOrganization({
+      year: body.year,
+      organizationId: organization.id,
+      excludeId: policyId
+    });
+
+    if (duplicatePolicy) {
+      return NextResponse.json(
+        {
+          success: false,
+          message: `มีนโยบายการอบรมสำหรับปี ${body.year} อยู่แล้ว`
+        },
+        { status: 409 }
+      );
+    }
+
+    const policy = await db.transaction(async (tx) => {
+      if (body.isActive) {
+        await tx
+          .update(trainingPolicies)
+          .set({ isActive: false, updatedAt: new Date() })
+          .where(
+            and(
+              eq(trainingPolicies.organizationId, organization.id),
+              ne(trainingPolicies.id, policyId)
+            )
+          );
+      }
+
+      const [updatedPolicy] = await tx
+        .update(trainingPolicies)
+        .set({
+          year: body.year,
+          totalHours: body.totalHours,
+          kHours: body.kHours,
+          sHours: body.sHours,
+          aHours: body.aHours,
+          isActive: body.isActive,
+          updatedAt: new Date()
+        })
+        .where(and(eq(trainingPolicies.id, policyId), eq(trainingPolicies.organizationId, organization.id)))
+        .returning();
+
+      return updatedPolicy;
+    });
+
+    const serializedPolicy = serializeTrainingPolicy(policy, {
+      updatedByName: session.user.name ?? null
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_POLICY,
+      action: AUDIT_ACTION.UPDATE,
+      entityName: `ปี ${policy.year}`,
+      entityId: policy.id,
+      oldValue: toAuditValue(serializeTrainingPolicy(existingPolicy)),
+      newValue: toAuditValue(serializedPolicy),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'อัปเดตนโยบายการอบรมเรียบร้อยแล้ว',
+      policy: serializedPolicy
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('PATCH /api/training-policies/[id] failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถอัปเดตนโยบายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-policies/route.ts

@@ -0,0 +1,144 @@
+import { eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingPolicies } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import type {
+  TrainingPolicyFilters,
+  TrainingPolicyMutationPayload
+} from '@/features/training-policy/api/types';
+import {
+  getTrainingPolicyByYearForOrganization,
+  listTrainingPoliciesForOrganization,
+  normalizeTrainingPolicyPayload,
+  serializeTrainingPolicy
+} from '@/features/training-policy/server/training-policy-data';
+import { AuthError, requirePermission } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+function readFilters(request: NextRequest): TrainingPolicyFilters {
+  const { searchParams } = request.nextUrl;
+
+  return {
+    page: Number(searchParams.get('page') ?? 1),
+    limit: Number(searchParams.get('limit') ?? 10),
+    search: searchParams.get('search') ?? undefined,
+    status: searchParams.get('status') ?? undefined,
+    sort: searchParams.get('sort') ?? undefined
+  };
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requirePermission('training_policy:read');
+    const filters = readFilters(request);
+    const result = await listTrainingPoliciesForOrganization({
+      organizationId: organization.id,
+      filters
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดนโยบายการอบรมเรียบร้อยแล้ว',
+      total_training_policies: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      active_policy: result.activePolicy,
+      policies: result.policies
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('GET /api/training-policies failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถโหลดนโยบายการอบรมได้' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requirePermission('training_policy:write');
+    const requestMetadata = getRequestMetadata(request);
+    const body = normalizeTrainingPolicyPayload(
+      (await request.json()) as TrainingPolicyMutationPayload
+    );
+
+    const existingPolicy = await getTrainingPolicyByYearForOrganization({
+      year: body.year,
+      organizationId: organization.id
+    });
+
+    if (existingPolicy) {
+      return NextResponse.json(
+        {
+          success: false,
+          message: `มีนโยบายการอบรมสำหรับปี ${body.year} อยู่แล้ว`
+        },
+        { status: 409 }
+      );
+    }
+
+    const policy = await db.transaction(async (tx) => {
+      if (body.isActive) {
+        await tx
+          .update(trainingPolicies)
+          .set({ isActive: false, updatedAt: new Date() })
+          .where(eq(trainingPolicies.organizationId, organization.id));
+      }
+
+      const [createdPolicy] = await tx
+        .insert(trainingPolicies)
+        .values({
+          organizationId: organization.id,
+          year: body.year,
+          totalHours: body.totalHours,
+          kHours: body.kHours,
+          sHours: body.sHours,
+          aHours: body.aHours,
+          isActive: body.isActive
+        })
+        .returning();
+
+      return createdPolicy;
+    });
+
+    const serializedPolicy = serializeTrainingPolicy(policy, {
+      updatedByName: session.user.name ?? null
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_POLICY,
+      action: AUDIT_ACTION.CREATE,
+      entityName: `ปี ${policy.year}`,
+      entityId: policy.id,
+      newValue: toAuditValue(serializedPolicy),
+      ...requestMetadata
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: 'สร้างนโยบายการอบรมเรียบร้อยแล้ว',
+        policy: serializedPolicy
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('POST /api/training-policies failed', error);
+    return NextResponse.json({ message: 'ไม่สามารถสร้างนโยบายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/[id]/certificates/[certificateId]/download/route.ts

@@ -0,0 +1,72 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { certificates } from '@/db/schema';
+import { getTrainingRecordByIdForOrganization } from '@/features/training-records/server/training-record-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+import { readStoredCertificate } from '@/lib/certificate-storage';
+
+export const runtime = 'nodejs';
+
+type Params = { params: Promise<{ id: string; certificateId: string }> };
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const { id, certificateId } = await params;
+    const trainingRecordId = Number(id);
+    const parsedCertificateId = Number(certificateId);
+
+    if (Number.isNaN(trainingRecordId) || Number.isNaN(parsedCertificateId)) {
+      return NextResponse.json({ message: 'Invalid certificate request' }, { status: 400 });
+    }
+
+    const record = await getTrainingRecordByIdForOrganization({
+      id: trainingRecordId,
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!record) {
+      return NextResponse.json({ message: 'ไม่พบรายการอบรม' }, { status: 404 });
+    }
+
+    const certificate = await db.query.certificates.findFirst({
+      where: and(
+        eq(certificates.id, parsedCertificateId),
+        eq(certificates.trainingRecordId, trainingRecordId),
+        eq(certificates.organizationId, organization.id)
+      )
+    });
+
+    if (!certificate) {
+      return NextResponse.json({ message: 'ไม่พบเอกสารแนบ' }, { status: 404 });
+    }
+
+    const file = await readStoredCertificate(certificate.storageKey);
+    const disposition =
+      certificate.fileType === 'application/pdf' || certificate.fileType.startsWith('image/')
+        ? 'inline'
+        : 'attachment';
+
+    return new NextResponse(file, {
+      headers: {
+        'Content-Type': certificate.fileType,
+        'Content-Length': String(certificate.fileSize),
+        'Content-Disposition': `${disposition}; filename*=UTF-8''${encodeURIComponent(certificate.fileName)}`,
+        'Cache-Control': 'private, no-store'
+      }
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if ((error as NodeJS.ErrnoException)?.code === 'ENOENT') {
+      return NextResponse.json({ message: 'ไม่พบไฟล์เอกสารแนบ' }, { status: 404 });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถเปิดเอกสารแนบได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/[id]/certificates/[certificateId]/route.ts

@@ -0,0 +1,100 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { certificates } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  canEmployeeManageEditableRecord,
+  getTrainingRecordByIdForOrganization
+} from '@/features/training-records/server/training-record-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+import { deleteStoredCertificate } from '@/lib/certificate-storage';
+
+export const runtime = 'nodejs';
+
+type Params = { params: Promise<{ id: string; certificateId: string }> };
+
+export async function DELETE(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id, certificateId } = await params;
+    const record = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!record) {
+      return NextResponse.json({ message: 'ไม่พบรายการอบรม' }, { status: 404 });
+    }
+
+    if (
+      !(await canEmployeeManageEditableRecord({
+        organizationId: organization.id,
+        role: membership.role,
+        recordUserId: record.userId,
+        recordEmployeeId: record.employeeId,
+        actorUserId: session.user.id,
+        approvalStatus: record.approvalStatus
+      }))
+    ) {
+      return NextResponse.json(
+        { message: 'พนักงานสามารถลบเอกสารได้เฉพาะรายการที่อยู่ในสถานะฉบับร่างหรือขอแก้ไขเท่านั้น' },
+        { status: 403 }
+      );
+    }
+
+    const [certificate] = await db
+      .delete(certificates)
+      .where(
+        and(
+          eq(certificates.id, Number(certificateId)),
+          eq(certificates.trainingRecordId, Number(id)),
+          eq(certificates.organizationId, organization.id)
+        )
+      )
+      .returning();
+
+    if (!certificate) {
+      return NextResponse.json({ message: 'ไม่พบเอกสารแนบ' }, { status: 404 });
+    }
+
+    await deleteStoredCertificate(certificate.storageKey);
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_RECORDS,
+      action: AUDIT_ACTION.DELETE,
+      entityName: certificate.fileName,
+      entityId: certificate.id,
+      oldValue: toAuditValue({
+        id: certificate.id,
+        training_record_id: certificate.trainingRecordId,
+        file_name: certificate.fileName,
+        file_type: certificate.fileType,
+        file_size: certificate.fileSize
+      }),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'ลบเอกสารแนบเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถลบเอกสารแนบได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/[id]/certificates/route.ts

@@ -0,0 +1,173 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { certificates } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  canEmployeeManageEditableRecord,
+  getTrainingRecordByIdForOrganization
+} from '@/features/training-records/server/training-record-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+import { saveCertificateFile } from '@/lib/certificate-storage';
+
+export const runtime = 'nodejs';
+
+type Params = { params: Promise<{ id: string }> };
+
+function serializeCertificate(certificate: typeof certificates.$inferSelect) {
+  return {
+    id: certificate.id,
+    organization_id: certificate.organizationId,
+    training_record_id: certificate.trainingRecordId,
+    file_name: certificate.fileName,
+    file_type: certificate.fileType,
+    file_size: certificate.fileSize,
+    storage_key: certificate.storageKey,
+    file_url: `/api/training-records/${certificate.trainingRecordId}/certificates/${certificate.id}/download`,
+    uploaded_by: certificate.uploadedBy,
+    uploaded_at: certificate.uploadedAt.toISOString(),
+    created_at: certificate.createdAt.toISOString(),
+    updated_at: certificate.updatedAt.toISOString()
+  };
+}
+
+export async function GET(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const { id } = await params;
+
+    const record = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!record) {
+      return NextResponse.json({ message: 'ไม่พบรายการอบรม' }, { status: 404 });
+    }
+
+    const rows = await db.query.certificates.findMany({
+      where: (table, { and, eq }) =>
+        and(eq(table.trainingRecordId, Number(id)), eq(table.organizationId, organization.id)),
+      orderBy: (table, { desc }) => [desc(table.uploadedAt)]
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดเอกสารแนบเรียบร้อยแล้ว',
+      certificates: rows.map(serializeCertificate)
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดเอกสารแนบได้' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const record = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!record) {
+      return NextResponse.json({ message: 'ไม่พบรายการอบรม' }, { status: 404 });
+    }
+
+    if (
+      !(await canEmployeeManageEditableRecord({
+        organizationId: organization.id,
+        role: membership.role,
+        recordUserId: record.userId,
+        recordEmployeeId: record.employeeId,
+        actorUserId: session.user.id,
+        approvalStatus: record.approvalStatus
+      }))
+    ) {
+      return NextResponse.json(
+        { message: 'พนักงานสามารถอัปโหลดเอกสารได้เฉพาะรายการที่อยู่ในสถานะฉบับร่างหรือขอแก้ไขเท่านั้น' },
+        { status: 403 }
+      );
+    }
+
+    const formData = await request.formData();
+    const files = formData.getAll('files').filter((entry): entry is File => entry instanceof File);
+
+    if (!files.length) {
+      return NextResponse.json({ message: 'กรุณาเลือกไฟล์อย่างน้อย 1 ไฟล์' }, { status: 400 });
+    }
+
+    const uploadedCertificates = [];
+
+    for (const file of files) {
+      const storedFile = await saveCertificateFile({
+        file,
+        organizationId: organization.id,
+        trainingRecordId: Number(id)
+      });
+
+      const [certificate] = await db
+        .insert(certificates)
+        .values({
+          organizationId: organization.id,
+          trainingRecordId: Number(id),
+          fileName: storedFile.fileName,
+          fileType: storedFile.fileType,
+          fileSize: storedFile.fileSize,
+          storageKey: storedFile.storageKey,
+          fileUrl: storedFile.fileUrl,
+          uploadedBy: session.user.id
+        })
+        .returning();
+
+      await logAuditEvent({
+        organizationId: organization.id,
+        userId: session.user.id,
+        module: AUDIT_MODULE.TRAINING_RECORDS,
+        action: AUDIT_ACTION.CREATE,
+        entityName: certificate.fileName,
+        entityId: certificate.id,
+        newValue: toAuditValue(serializeCertificate(certificate)),
+        ...requestMetadata
+      });
+
+      uploadedCertificates.push(serializeCertificate(certificate));
+    }
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: 'อัปโหลดเอกสารแนบเรียบร้อยแล้ว',
+        certificates: uploadedCertificates
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json(
+      {
+        message: error instanceof Error ? error.message : 'ไม่สามารถอัปโหลดเอกสารแนบได้'
+      },
+      { status: 500 }
+    );
+  }
+}

src/app/api/training-records/[id]/review/route.ts

@@ -0,0 +1,213 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingRecords, users } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  createTrainingApprovedNotification,
+  createTrainingRejectedNotification
+} from '@/features/notifications/server/notification-service';
+import type { TrainingRecordReviewPayload } from '@/features/training-records/api/types';
+import {
+  canReviewTrainingRecords,
+  getTrainingRecordByIdForOrganization,
+  isMissingTrainingRecordMinutesStorage,
+  serializeTrainingRecord
+} from '@/features/training-records/server/training-record-data';
+import { trainingRecordReviewSchema } from '@/features/training-records/schemas/training-record';
+import { minutesToDecimalHours } from '@/features/training-records/utils/time-utils';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+
+    if (!canReviewTrainingRecords(membership.role)) {
+      return NextResponse.json({ message: 'คุณไม่มีสิทธิ์ดำเนินการนี้' }, { status: 403 });
+    }
+
+    const { id } = await params;
+    const parsedBody = trainingRecordReviewSchema.safeParse(
+      (await request.json()) as TrainingRecordReviewPayload
+    );
+
+    if (!parsedBody.success) {
+      const issue = parsedBody.error.issues[0];
+      return NextResponse.json(
+        { message: issue?.message ?? 'ข้อมูลการตรวจสอบไม่ถูกต้อง' },
+        { status: 400 }
+      );
+    }
+
+    const body = parsedBody.data;
+
+    const existingRecord = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!existingRecord) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบรายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    if (existingRecord.approvalStatus !== 'pending') {
+      return NextResponse.json(
+        { message: 'สามารถตรวจสอบได้เฉพาะรายการที่อยู่ในสถานะรอตรวจสอบเท่านั้น' },
+        { status: 409 }
+      );
+    }
+
+    const reviewUpdate =
+      body.status === 'approved'
+        ? {
+            approvalStatus: 'approved' as const,
+            category: body.category,
+            approvedMinutes: body.approvedMinutes,
+            approvedHours: minutesToDecimalHours(body.approvedMinutes ?? 0),
+            reviewerNote: body.reviewerNote?.trim() || null,
+            rejectReason: null,
+            reviewedByUserId: session.user.id,
+            reviewedBy: session.user.id,
+            reviewedAt: new Date(),
+            updatedAt: new Date()
+          }
+        : {
+            approvalStatus: 'needs_revision' as const,
+            category: null,
+            approvedMinutes: null,
+            approvedHours: null,
+            reviewerNote: body.reviewerNote?.trim() || null,
+            rejectReason: body.rejectReason.trim(),
+            reviewedByUserId: session.user.id,
+            reviewedBy: session.user.id,
+            reviewedAt: new Date(),
+            updatedAt: new Date()
+          };
+
+    let reviewedRecord;
+
+    try {
+      [reviewedRecord] = await db
+        .update(trainingRecords)
+        .set(reviewUpdate)
+        .where(and(eq(trainingRecords.id, Number(id)), eq(trainingRecords.organizationId, organization.id)))
+        .returning();
+    } catch (error) {
+      if (!isMissingTrainingRecordMinutesStorage(error)) {
+        throw error;
+      }
+
+      const legacyReviewUpdate =
+        body.status === 'approved'
+          ? {
+              approvalStatus: 'approved' as const,
+              category: body.category,
+              approvedHours: minutesToDecimalHours(body.approvedMinutes ?? 0),
+              reviewerNote: body.reviewerNote?.trim() || null,
+              rejectReason: null,
+              reviewedByUserId: session.user.id,
+              reviewedBy: session.user.id,
+              reviewedAt: new Date(),
+              updatedAt: new Date()
+            }
+          : {
+              approvalStatus: 'needs_revision' as const,
+              category: null,
+              approvedHours: null,
+              reviewerNote: body.reviewerNote?.trim() || null,
+              rejectReason: body.rejectReason.trim(),
+              reviewedByUserId: session.user.id,
+              reviewedBy: session.user.id,
+              reviewedAt: new Date(),
+              updatedAt: new Date()
+            };
+
+      [reviewedRecord] = await db
+        .update(trainingRecords)
+        .set(legacyReviewUpdate)
+        .where(and(eq(trainingRecords.id, Number(id)), eq(trainingRecords.organizationId, organization.id)))
+        .returning();
+    }
+
+    const [reviewer] = await db
+      .select({
+        id: users.id,
+        name: users.name
+      })
+      .from(users)
+      .where(eq(users.id, session.user.id))
+      .limit(1);
+
+    if (body.status === 'approved' && existingRecord.userId) {
+      await createTrainingApprovedNotification({
+        organizationId: organization.id,
+        userId: existingRecord.userId,
+        courseName: existingRecord.courseName,
+        category: reviewedRecord.category,
+        approvedHours: reviewedRecord.approvedHours,
+        referenceId: reviewedRecord.id
+      });
+    } else if (existingRecord.userId) {
+      await createTrainingRejectedNotification({
+        organizationId: organization.id,
+        userId: existingRecord.userId,
+        courseName: existingRecord.courseName,
+        rejectReason: reviewedRecord.rejectReason,
+        referenceId: reviewedRecord.id
+      });
+    }
+
+    const serializedRecord = serializeTrainingRecord({
+      ...existingRecord,
+      approvalStatus: reviewedRecord.approvalStatus,
+      approvedMinutes: reviewedRecord.approvedMinutes,
+      approvedHours: reviewedRecord.approvedHours,
+      category: reviewedRecord.category,
+      reviewerNote: reviewedRecord.reviewerNote,
+      rejectReason: reviewedRecord.rejectReason,
+      reviewedBy: reviewedRecord.reviewedBy,
+      reviewedAt: reviewedRecord.reviewedAt,
+      updatedAt: reviewedRecord.updatedAt,
+      createdByName: existingRecord.createdByName ?? reviewer?.name ?? null
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.HRD_REVIEW,
+      action: body.status === 'approved' ? AUDIT_ACTION.APPROVE : AUDIT_ACTION.REJECT,
+      entityName: existingRecord.courseName,
+      entityId: reviewedRecord.id,
+      oldValue: toAuditValue(serializeTrainingRecord(existingRecord)),
+      newValue: toAuditValue(serializedRecord),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'ตรวจสอบรายการอบรมเรียบร้อยแล้ว',
+      training_record: serializedRecord
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถตรวจสอบรายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/[id]/route.ts

@@ -0,0 +1,319 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingRecords } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import type { TrainingRecordMutationPayload } from '@/features/training-records/api/types';
+import {
+  assertUserAndCourseAccess,
+  canEmployeeManageEditableRecord,
+  canReviewTrainingRecords,
+  getTrainingRecordByIdForOrganization,
+  isMissingTrainingRecordMinutesStorage,
+  normalizeTrainingRecordPayload,
+  serializeTrainingRecord
+} from '@/features/training-records/server/training-record-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+import { deleteStoredCertificate } from '@/lib/certificate-storage';
+
+type Params = { params: Promise<{ id: string }> };
+
+export async function GET(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const { id } = await params;
+
+    const record = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!record) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบรายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: `โหลดรายการอบรมรหัส ${id} เรียบร้อยแล้ว`,
+      training_record: serializeTrainingRecord(record)
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดรายการอบรมได้' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, membership, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+    const body = normalizeTrainingRecordPayload(
+      (await request.json()) as TrainingRecordMutationPayload
+    );
+
+    const existingRecord = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!existingRecord) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบรายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    if (
+      !(await canEmployeeManageEditableRecord({
+        organizationId: organization.id,
+        role: membership.role,
+        recordUserId: existingRecord.userId,
+        recordEmployeeId: existingRecord.employeeId,
+        actorUserId: session.user.id,
+        approvalStatus: existingRecord.approvalStatus
+      }))
+    ) {
+      return NextResponse.json(
+        { message: 'พนักงานสามารถแก้ไขได้เฉพาะรายการที่อยู่ในสถานะฉบับร่างหรือขอแก้ไขเท่านั้น' },
+        { status: 403 }
+      );
+    }
+
+    if (
+      existingRecord.approvalStatus === 'approved' &&
+      !canReviewTrainingRecords(membership.role)
+    ) {
+      return NextResponse.json(
+        { message: 'ผู้ใช้นี้ไม่สามารถแก้ไขรายการที่อนุมัติแล้วได้' },
+        { status: 409 }
+      );
+    }
+
+    const { user, course } = await assertUserAndCourseAccess({
+      organizationId: organization.id,
+      targetEmployeeId: body.employeeId,
+      actorUserId: session.user.id,
+      actorRole: membership.role,
+      courseId: body.courseId,
+      courseName: body.courseName
+    });
+
+    if (!user) {
+      return NextResponse.json(
+        { message: 'ไม่พบผู้ใช้งานในองค์กรที่กำลังใช้งานอยู่' },
+        { status: 400 }
+      );
+    }
+
+    const approvalStatus = body.submissionMode === 'draft' ? 'draft' : 'pending';
+    const reviewReset =
+      body.submissionMode === 'submit'
+        ? {
+            category: null,
+            approvedMinutes: null,
+            approvedHours: null,
+            reviewerNote: null,
+            rejectReason: null,
+            reviewedByUserId: null,
+            reviewedBy: null,
+            reviewedAt: null
+          }
+        : {};
+
+    let record;
+
+    try {
+      [record] = await db
+        .update(trainingRecords)
+        .set({
+          userId: user.userId ?? null,
+          employeeId: body.employeeId,
+          courseId: course?.id ?? null,
+          courseName: course?.name ?? body.courseName,
+          trainingDate: new Date(body.trainingDate),
+          trainingType: body.trainingType,
+          submittedMinutes: body.submittedMinutes,
+          hours: body.hours,
+          organizer: body.organizer,
+          note: body.note,
+          approvalStatus,
+          ...reviewReset,
+          updatedAt: new Date()
+        })
+        .where(and(eq(trainingRecords.id, Number(id)), eq(trainingRecords.organizationId, organization.id)))
+        .returning();
+    } catch (error) {
+      if (!isMissingTrainingRecordMinutesStorage(error)) {
+        throw error;
+      }
+
+      [record] = await db
+        .update(trainingRecords)
+        .set({
+          userId: user.userId ?? null,
+          employeeId: body.employeeId,
+          courseId: course?.id ?? null,
+          courseName: course?.name ?? body.courseName,
+          trainingDate: new Date(body.trainingDate),
+          trainingType: body.trainingType,
+          hours: body.hours,
+          organizer: body.organizer,
+          note: body.note,
+          approvalStatus,
+          ...reviewReset,
+          updatedAt: new Date()
+        })
+        .where(and(eq(trainingRecords.id, Number(id)), eq(trainingRecords.organizationId, organization.id)))
+        .returning();
+    }
+
+    const serializedRecord = serializeTrainingRecord({
+      id: record.id,
+      organizationId: record.organizationId,
+      userId: record.userId,
+      employeeId: record.employeeId,
+      employeeCode: user.employeeCode ?? existingRecord.employeeCode ?? null,
+      userName: user.fullName,
+      companyName: existingRecord.companyName,
+      departmentName: existingRecord.departmentName,
+      courseId: record.courseId,
+      courseName: record.courseName,
+      trainingDate: record.trainingDate,
+      trainingType: record.trainingType,
+      submittedMinutes: record.submittedMinutes,
+      hours: record.hours,
+      approvedMinutes: record.approvedMinutes,
+      approvedHours: record.approvedHours,
+      category: record.category,
+      organizer: record.organizer,
+      note: record.note,
+      certificatePreviewUrl: existingRecord.certificatePreviewUrl,
+      certificatePreviewType: existingRecord.certificatePreviewType,
+      approvalStatus: record.approvalStatus,
+      reviewerNote: record.reviewerNote,
+      rejectReason: record.rejectReason,
+      reviewedBy: record.reviewedBy,
+      reviewedAt: record.reviewedAt,
+      createdBy: record.createdBy,
+      createdByName: existingRecord.createdByName,
+      createdAt: record.createdAt,
+      updatedAt: record.updatedAt
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_RECORDS,
+      action: AUDIT_ACTION.UPDATE,
+      entityName: record.courseName,
+      entityId: record.id,
+      oldValue: toAuditValue(serializeTrainingRecord(existingRecord)),
+      newValue: toAuditValue(serializedRecord),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'อัปเดตรายการอบรมเรียบร้อยแล้ว',
+      training_record: serializedRecord
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถอัปเดตรายการอบรมได้' }, { status: 500 });
+  }
+}
+
+export async function DELETE(request: NextRequest, { params }: Params) {
+  try {
+    const { organization, membership, session } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const { id } = await params;
+
+    const existingRecord = await getTrainingRecordByIdForOrganization({
+      id: Number(id),
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role
+    });
+
+    if (!existingRecord) {
+      return NextResponse.json(
+        { success: false, message: `ไม่พบรายการอบรมรหัส ${id}` },
+        { status: 404 }
+      );
+    }
+
+    if (
+      !(await canEmployeeManageEditableRecord({
+        organizationId: organization.id,
+        role: membership.role,
+        recordUserId: existingRecord.userId,
+        recordEmployeeId: existingRecord.employeeId,
+        actorUserId: session.user.id,
+        approvalStatus: existingRecord.approvalStatus
+      }))
+    ) {
+      return NextResponse.json(
+        { message: 'พนักงานสามารถลบได้เฉพาะรายการที่อยู่ในสถานะฉบับร่างหรือขอแก้ไขเท่านั้น' },
+        { status: 403 }
+      );
+    }
+
+    const recordCertificates = await db.query.certificates.findMany({
+      where: (table, { and, eq }) =>
+        and(eq(table.trainingRecordId, Number(id)), eq(table.organizationId, organization.id))
+    });
+
+    for (const certificate of recordCertificates) {
+      await deleteStoredCertificate(certificate.storageKey);
+    }
+
+    await db
+      .delete(trainingRecords)
+      .where(and(eq(trainingRecords.id, Number(id)), eq(trainingRecords.organizationId, organization.id)));
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_RECORDS,
+      action: AUDIT_ACTION.DELETE,
+      entityName: existingRecord.courseName,
+      entityId: existingRecord.id,
+      oldValue: toAuditValue(serializeTrainingRecord(existingRecord)),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'ลบรายการอบรมเรียบร้อยแล้ว'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถลบรายการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/import/route.ts

@@ -0,0 +1,439 @@
+import { and, eq } from 'drizzle-orm';
+import { NextRequest, NextResponse } from 'next/server';
+import * as XLSX from 'xlsx';
+import { importJobs, userEmployeeMaps } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import {
+  findEmployeeByCodeForOrganization,
+  syncUsersForEmployeeCode
+} from '@/features/employees/server/employee-identity-linking';
+import {
+  normalizeTrainingTypeForDb,
+  type LegacyTrainingType
+} from '@/features/training-records/constants/training-record-options';
+import { isMissingTrainingRecordMinutesStorage } from '@/features/training-records/server/training-record-data';
+import { decimalHoursToMinutes } from '@/features/training-records/utils/time-utils';
+import { trainingRecords } from '@/db/schema';
+import { AuthError, requireAllPermissions } from '@/lib/auth/session';
+import { db } from '@/lib/db';
+import {
+  trainingRecordImportCategoryValues,
+  trainingRecordImportTemplateHeaders,
+  trainingRecordImportTrainingTypeValues
+} from '@/features/training-records/constants/import-training-records';
+
+type TrainingRecordImportError = {
+  row: number;
+  employee_code?: string;
+  message: string;
+};
+
+type ParsedImportRow = {
+  rowNumber: number;
+  employeeCode: string;
+  courseName: string;
+  trainingDate: Date;
+  trainingType: LegacyTrainingType;
+  locationType: string | null;
+  hours: number;
+  category: 'K' | 'S' | 'A';
+  provider: string | null;
+  note: string | null;
+};
+
+const HEADERS = {
+  employeeCode: trainingRecordImportTemplateHeaders[0],
+  courseName: trainingRecordImportTemplateHeaders[1],
+  trainingDate: trainingRecordImportTemplateHeaders[2],
+  trainingType: trainingRecordImportTemplateHeaders[3],
+  locationType: trainingRecordImportTemplateHeaders[4],
+  hours: trainingRecordImportTemplateHeaders[5],
+  category: trainingRecordImportTemplateHeaders[6],
+  provider: trainingRecordImportTemplateHeaders[7],
+  note: trainingRecordImportTemplateHeaders[8]
+} as const;
+
+const allowedTrainingTypeKeys = new Set(trainingRecordImportTrainingTypeValues);
+const allowedCategoryValues = new Set(trainingRecordImportCategoryValues);
+
+function rowError(row: number, message: string, employeeCode?: string): TrainingRecordImportError {
+  return { row, message, employee_code: employeeCode };
+}
+
+function normalizeText(value: unknown) {
+  return String(value ?? '').trim();
+}
+
+function parseOptionalNumber(value: unknown) {
+  const normalized = normalizeText(value);
+
+  if (!normalized) {
+    return null;
+  }
+
+  const parsed = Number(normalized.replaceAll(',', ''));
+  return Number.isFinite(parsed) ? parsed : Number.NaN;
+}
+
+function parseDateValue(value: unknown) {
+  if (value instanceof Date && Number.isFinite(value.getTime())) {
+    return new Date(Date.UTC(value.getFullYear(), value.getMonth(), value.getDate()));
+  }
+
+  if (typeof value === 'number' && Number.isFinite(value)) {
+    const parsed = XLSX.SSF.parse_date_code(value);
+
+    if (parsed) {
+      return new Date(Date.UTC(parsed.y, parsed.m - 1, parsed.d));
+    }
+  }
+
+  const normalized = normalizeText(value);
+  if (!normalized) {
+    return null;
+  }
+
+  const parsedByRuntime = new Date(normalized);
+  if (Number.isFinite(parsedByRuntime.getTime())) {
+    return new Date(
+      Date.UTC(
+        parsedByRuntime.getUTCFullYear(),
+        parsedByRuntime.getUTCMonth(),
+        parsedByRuntime.getUTCDate()
+      )
+    );
+  }
+
+  return null;
+}
+
+function parseTrainingType(value: unknown) {
+  const normalized = normalizeText(value);
+
+  if (!normalized) {
+    return null;
+  }
+
+  if (!allowedTrainingTypeKeys.has(normalized as (typeof trainingRecordImportTrainingTypeValues)[number])) {
+    return null;
+  }
+
+  return normalizeTrainingTypeForDb(normalized);
+}
+
+function parseCategory(value: unknown) {
+  const normalized = normalizeText(value).toUpperCase();
+
+  if (!normalized) {
+    return null;
+  }
+
+  if (!allowedCategoryValues.has(normalized as 'K' | 'S' | 'A')) {
+    return null;
+  }
+
+  return normalized as 'K' | 'S' | 'A';
+}
+
+function validateHeaders(rows: Record<string, unknown>[]) {
+  const availableHeaders = rows[0] ? Object.keys(rows[0]) : [];
+
+  return trainingRecordImportTemplateHeaders.every((header) => availableHeaders.includes(header));
+}
+
+function buildImportedNote({
+  locationType,
+  note
+}: {
+  locationType: string | null;
+  note: string | null;
+}) {
+  const parts = [
+    locationType ? `location_type: ${locationType}` : null,
+    note?.trim() ? note.trim() : null
+  ].filter(Boolean);
+
+  return parts.length ? parts.join('\n') : null;
+}
+
+async function insertApprovedTrainingRecord({
+  organizationId,
+  employeeId,
+  userId,
+  sessionUserId,
+  row
+}: {
+  organizationId: string;
+  employeeId: number;
+  userId: string | null;
+  sessionUserId: string;
+  row: ParsedImportRow;
+}) {
+  const minutes = decimalHoursToMinutes(row.hours);
+  const baseValues = {
+    organizationId,
+    userId,
+    employeeId,
+    courseId: null,
+    courseName: row.courseName,
+    trainingDate: row.trainingDate,
+    trainingType: row.trainingType,
+    hours: row.hours,
+    approvedHours: row.hours,
+    category: row.category,
+    organizer: row.provider,
+    note: buildImportedNote({
+      locationType: row.locationType,
+      note: row.note
+    }),
+    approvalStatus: 'approved' as const,
+    submittedByUserId: sessionUserId,
+    reviewedByUserId: sessionUserId,
+    reviewedBy: sessionUserId,
+    reviewedAt: new Date(),
+    createdBy: sessionUserId
+  };
+
+  try {
+    await db.insert(trainingRecords).values({
+      ...baseValues,
+      submittedMinutes: minutes,
+      approvedMinutes: minutes
+    });
+  } catch (error) {
+    if (!isMissingTrainingRecordMinutesStorage(error)) {
+      throw error;
+    }
+
+    await db.insert(trainingRecords).values(baseValues);
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireAllPermissions([
+      'training_record:write_all',
+      'training_record:approve'
+    ]);
+    const requestMetadata = getRequestMetadata(request);
+    const formData = await request.formData();
+    const file = formData.get('file');
+
+    if (!(file instanceof File)) {
+      return NextResponse.json({ message: 'กรุณาแนบไฟล์ Excel สำหรับนำเข้า' }, { status: 400 });
+    }
+
+    if (!file.name.toLowerCase().endsWith('.xlsx')) {
+      return NextResponse.json({ message: 'ระบบรองรับเฉพาะไฟล์ .xlsx เท่านั้น' }, { status: 400 });
+    }
+
+    const buffer = await file.arrayBuffer();
+    const workbook = XLSX.read(buffer, { type: 'array' });
+    const worksheet = workbook.Sheets[workbook.SheetNames[0]];
+
+    if (!worksheet) {
+      return NextResponse.json({ message: 'ไม่พบข้อมูลในไฟล์ที่อัปโหลด' }, { status: 400 });
+    }
+
+    const rows = XLSX.utils.sheet_to_json<Record<string, unknown>>(worksheet, { defval: '' });
+
+    if (rows.length === 0) {
+      return NextResponse.json({ message: 'ไม่พบข้อมูลประวัติการอบรมในไฟล์ที่อัปโหลด' }, { status: 400 });
+    }
+
+    if (!validateHeaders(rows)) {
+      return NextResponse.json(
+        {
+          message: `หัวตารางไม่ถูกต้อง กรุณาใช้ Template นี้: ${trainingRecordImportTemplateHeaders.join(', ')}`
+        },
+        { status: 400 }
+      );
+    }
+
+    const errors: TrainingRecordImportError[] = [];
+    const validRows: ParsedImportRow[] = [];
+
+    for (const [index, row] of rows.entries()) {
+      const rowNumber = index + 2;
+      const employeeCode = normalizeText(row[HEADERS.employeeCode]).toUpperCase();
+      const courseName = normalizeText(row[HEADERS.courseName]);
+      const hours = parseOptionalNumber(row[HEADERS.hours]);
+      const category = parseCategory(row[HEADERS.category]);
+      const trainingType = parseTrainingType(row[HEADERS.trainingType]);
+      const trainingDate = parseDateValue(row[HEADERS.trainingDate]);
+      const locationType = normalizeText(row[HEADERS.locationType]) || null;
+      const provider = normalizeText(row[HEADERS.provider]) || null;
+      const note = normalizeText(row[HEADERS.note]) || null;
+
+      if (!employeeCode) {
+        errors.push(rowError(rowNumber, 'กรุณาระบุ employee_code'));
+        continue;
+      }
+
+      if (!courseName) {
+        errors.push(rowError(rowNumber, 'course_name ต้องไม่ว่าง', employeeCode));
+        continue;
+      }
+
+      if (!trainingDate) {
+        errors.push(rowError(rowNumber, 'training_date ต้องเป็นวันที่ที่ถูกต้อง', employeeCode));
+        continue;
+      }
+
+      if (hours === null) {
+        errors.push(rowError(rowNumber, 'กรุณาระบุ hours', employeeCode));
+        continue;
+      }
+
+      if (Number.isNaN(hours) || hours <= 0) {
+        errors.push(rowError(rowNumber, 'hours ต้องมากกว่า 0', employeeCode));
+        continue;
+      }
+
+      if (!category) {
+        errors.push(rowError(rowNumber, 'category ต้องเป็น K, S หรือ A', employeeCode));
+        continue;
+      }
+
+      if (!trainingType) {
+        errors.push(
+          rowError(
+            rowNumber,
+            'training_type ต้องเป็น INTERNAL_TRAINING, EXTERNAL_TRAINING, ONLINE_COURSE หรือ OJT',
+            employeeCode
+          )
+        );
+        continue;
+      }
+
+      validRows.push({
+        rowNumber,
+        employeeCode,
+        courseName,
+        trainingDate,
+        trainingType,
+        locationType,
+        hours: Number(hours.toFixed(2)),
+        category,
+        provider,
+        note
+      });
+    }
+
+    let importedRecords = 0;
+
+    for (const row of validRows) {
+      try {
+        const employee = await findEmployeeByCodeForOrganization({
+          organizationId: organization.id,
+          employeeCode: row.employeeCode
+        });
+
+        if (!employee) {
+          errors.push(rowError(row.rowNumber, 'employee_code ต้องมีอยู่ในระบบ', row.employeeCode));
+          continue;
+        }
+
+        const syncedUserIds = await syncUsersForEmployeeCode({
+          organizationId: organization.id,
+          employeeCode: row.employeeCode,
+          employeeId: employee.id
+        });
+
+        let trainingRecordUserId = syncedUserIds[0] ?? null;
+
+        if (!trainingRecordUserId) {
+          const [mappedUser] = await db
+            .select({ userId: userEmployeeMaps.userId })
+            .from(userEmployeeMaps)
+            .where(
+              and(
+                eq(userEmployeeMaps.organizationId, organization.id),
+                eq(userEmployeeMaps.employeeId, employee.id)
+              )
+            )
+            .limit(1);
+
+          trainingRecordUserId = mappedUser?.userId ?? null;
+        }
+
+        await insertApprovedTrainingRecord({
+          organizationId: organization.id,
+          employeeId: employee.id,
+          userId: trainingRecordUserId,
+          sessionUserId: session.user.id,
+          row
+        });
+
+        importedRecords += 1;
+      } catch (error) {
+        errors.push(
+          rowError(
+            row.rowNumber,
+            error instanceof Error
+              ? error.message
+              : 'เกิดข้อผิดพลาดระหว่างบันทึกประวัติการอบรม',
+            row.employeeCode
+          )
+        );
+      }
+    }
+
+    const summary = {
+      total_rows: rows.length,
+      imported_records: importedRecords,
+      failed_rows: errors.length
+    };
+
+    const [job] = await db
+      .insert(importJobs)
+      .values({
+        organizationId: organization.id,
+        importType: 'training_record_excel',
+        fileName: file.name,
+        totalRows: rows.length,
+        successRows: importedRecords,
+        failedRows: errors.length,
+        status: 'completed',
+        createdBy: session.user.id
+      })
+      .returning({ id: importJobs.id });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_RECORDS,
+      action: AUDIT_ACTION.IMPORT,
+      entityName: file.name,
+      entityId: job.id,
+      newValue: toAuditValue({
+        file_name: file.name,
+        summary
+      }),
+      ...requestMetadata
+    });
+
+    return NextResponse.json({
+      success: true,
+      message:
+        errors.length === 0
+          ? 'นำเข้าประวัติการอบรมเรียบร้อยแล้ว'
+          : 'นำเข้าประวัติการอบรมสำเร็จบางส่วน กรุณาตรวจสอบรายการที่ผิดพลาด',
+      import_job_id: job.id,
+      summary,
+      errors
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถนำเข้าประวัติการอบรมได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/import/template/route.ts

@@ -0,0 +1,56 @@
+import { NextResponse } from 'next/server';
+import * as XLSX from 'xlsx';
+import { AuthError, requireAllPermissions } from '@/lib/auth/session';
+import { trainingRecordImportTemplateHeaders } from '@/features/training-records/constants/import-training-records';
+
+export async function GET() {
+  try {
+    await requireAllPermissions(['training_record:write_all', 'training_record:approve']);
+
+    const workbook = XLSX.utils.book_new();
+    const worksheet = XLSX.utils.aoa_to_sheet([
+      [...trainingRecordImportTemplateHeaders],
+      [
+        'EMP-001',
+        'React Basic',
+        '2026-01-15',
+        'INTERNAL_TRAINING',
+        'onsite',
+        6,
+        'K',
+        'HRD Academy',
+        'imported from legacy record'
+      ],
+      [
+        'EMP-002',
+        'Next.js',
+        '2026-02-20',
+        'ONLINE_COURSE',
+        'online',
+        8,
+        'S',
+        'Open Learning',
+        ''
+      ]
+    ]);
+
+    worksheet['!cols'] = trainingRecordImportTemplateHeaders.map(() => ({ wch: 20 }));
+
+    XLSX.utils.book_append_sheet(workbook, worksheet, 'TrainingRecords');
+    const buffer = XLSX.write(workbook, { type: 'buffer', bookType: 'xlsx' });
+
+    return new NextResponse(buffer, {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        'Content-Disposition': 'attachment; filename="training-record-import-template.xlsx"'
+      }
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถสร้าง Template นำเข้าได้' }, { status: 500 });
+  }
+}

src/app/api/training-records/route.ts

@@ -0,0 +1,208 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { trainingRecords } from '@/db/schema';
+import {
+  AUDIT_ACTION,
+  AUDIT_MODULE,
+  getRequestMetadata,
+  logAuditEvent,
+  toAuditValue
+} from '@/features/audit-logs/server/audit-service';
+import type { TrainingRecordMutationPayload } from '@/features/training-records/api/types';
+import {
+  assertUserAndCourseAccess,
+  isMissingTrainingRecordMinutesStorage,
+  listTrainingRecordsForOrganization,
+  normalizeTrainingRecordPayload,
+  serializeTrainingRecord
+} from '@/features/training-records/server/training-record-data';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+import { getDatabaseErrorMessage } from '@/lib/db-errors';
+import { db } from '@/lib/db';
+
+function getFilterParam(searchParams: URLSearchParams, ...keys: string[]) {
+  for (const key of keys) {
+    const value = searchParams.get(key)?.trim();
+    if (value && value !== 'all') {
+      return value;
+    }
+  }
+
+  return undefined;
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const { searchParams } = request.nextUrl;
+
+    const result = await listTrainingRecordsForOrganization({
+      organizationId: organization.id,
+      userId: session.user.id,
+      role: membership.role,
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        search: getFilterParam(searchParams, 'search', 'user_name', 'name'),
+        statuses: getFilterParam(searchParams, 'statuses', 'approval_status', 'status'),
+        types: getFilterParam(searchParams, 'types', 'training_type', 'type'),
+        year: getFilterParam(searchParams, 'year'),
+        company: getFilterParam(searchParams, 'company'),
+        department: getFilterParam(searchParams, 'department'),
+        sort: searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'โหลดประวัติการอบรมเรียบร้อยแล้ว',
+      total_training_records: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      training_records: result.trainingRecords
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'ไม่สามารถโหลดประวัติการอบรมได้' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session, membership } = await requireOrganizationAccess();
+    const requestMetadata = getRequestMetadata(request);
+    const body = normalizeTrainingRecordPayload(
+      (await request.json()) as TrainingRecordMutationPayload
+    );
+    const approvalStatus = body.submissionMode === 'draft' ? 'draft' : 'pending';
+
+    const { user, course } = await assertUserAndCourseAccess({
+      organizationId: organization.id,
+      targetEmployeeId: body.employeeId,
+      actorUserId: session.user.id,
+      actorRole: membership.role,
+      courseId: body.courseId,
+      courseName: body.courseName
+    });
+
+    if (!user || !course) {
+      if (!user) {
+        return NextResponse.json(
+          { message: 'ไม่พบผู้ใช้งานในองค์กรที่กำลังใช้งานอยู่' },
+          { status: 400 }
+        );
+      }
+    }
+
+    let record;
+
+    try {
+      [record] = await db
+        .insert(trainingRecords)
+        .values({
+          organizationId: organization.id,
+          userId: user.userId ?? null,
+          employeeId: body.employeeId,
+          courseId: course?.id ?? null,
+          courseName: course?.name ?? body.courseName,
+          trainingDate: new Date(body.trainingDate),
+          trainingType: body.trainingType,
+          submittedMinutes: body.submittedMinutes,
+          hours: body.hours,
+          organizer: body.organizer,
+          note: body.note,
+          approvalStatus,
+          submittedByUserId: session.user.id,
+          createdBy: session.user.id
+        })
+        .returning();
+    } catch (error) {
+      if (!isMissingTrainingRecordMinutesStorage(error)) {
+        throw error;
+      }
+
+      [record] = await db
+        .insert(trainingRecords)
+        .values({
+          organizationId: organization.id,
+          userId: user.userId ?? null,
+          employeeId: body.employeeId,
+          courseId: course?.id ?? null,
+          courseName: course?.name ?? body.courseName,
+          trainingDate: new Date(body.trainingDate),
+          trainingType: body.trainingType,
+          hours: body.hours,
+          organizer: body.organizer,
+          note: body.note,
+          approvalStatus,
+          submittedByUserId: session.user.id,
+          createdBy: session.user.id
+        })
+        .returning();
+    }
+
+    const serializedRecord = serializeTrainingRecord({
+      id: record.id,
+      organizationId: record.organizationId,
+      userId: record.userId,
+      employeeId: record.employeeId,
+      employeeCode: user.employeeCode ?? null,
+      userName: user.fullName,
+      companyName: user.companyName,
+      departmentName: null,
+      courseId: record.courseId,
+      courseName: record.courseName,
+      trainingDate: record.trainingDate,
+      trainingType: record.trainingType,
+      submittedMinutes: record.submittedMinutes,
+      hours: record.hours,
+      approvedMinutes: record.approvedMinutes,
+      approvedHours: record.approvedHours,
+      category: record.category,
+      organizer: record.organizer,
+      note: record.note,
+      certificatePreviewUrl: null,
+      certificatePreviewType: null,
+      approvalStatus: record.approvalStatus,
+      reviewerNote: record.reviewerNote,
+      rejectReason: record.rejectReason,
+      reviewedBy: record.reviewedBy,
+      reviewedAt: record.reviewedAt,
+      createdBy: record.createdBy,
+      createdByName: session.user.name ?? null,
+      createdAt: record.createdAt,
+      updatedAt: record.updatedAt
+    });
+
+    await logAuditEvent({
+      organizationId: organization.id,
+      userId: session.user.id,
+      module: AUDIT_MODULE.TRAINING_RECORDS,
+      action: AUDIT_ACTION.CREATE,
+      entityName: record.courseName,
+      entityId: record.id,
+      newValue: toAuditValue(serializedRecord),
+      ...requestMetadata
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        time: new Date().toISOString(),
+        message: 'สร้างรายการอบรมเรียบร้อยแล้ว',
+        training_record: serializedRecord
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    console.error('Failed to create training record', error);
+    return NextResponse.json({ message: getDatabaseErrorMessage(error) }, { status: 500 });
+  }
+}

src/app/api/user-permissions/[userId]/assignment/route.ts

@@ -0,0 +1,35 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { userPermissionAssignmentSchema } from '@/features/permission-management/schemas/user-permission-assignment';
+import { saveUserPermissionAssignmentForOrganization } from '@/features/permission-management/server/user-permission-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function PUT(
+  request: NextRequest,
+  { params }: { params: Promise<{ userId: string }> }
+) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const body = userPermissionAssignmentSchema.parse(await request.json());
+    await saveUserPermissionAssignmentForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      userId: (await params).userId,
+      payload: body
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'User permission assignment saved successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to save user permission assignment' }, { status: 500 });
+  }
+}

src/app/api/user-permissions/[userId]/effective/route.ts

@@ -0,0 +1,27 @@
+import { NextResponse } from 'next/server';
+import { getUserPermissionAssignmentDetailForOrganization } from '@/features/permission-management/server/user-permission-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET(
+  _: Request,
+  { params }: { params: Promise<{ userId: string }> }
+) {
+  try {
+    const { organization } = await requireSuperAdminOrganizationAccess();
+    const detail = await getUserPermissionAssignmentDetailForOrganization({
+      organizationId: organization.id,
+      userId: (await params).userId
+    });
+
+    return NextResponse.json({
+      success: true,
+      effective_permissions: detail.effective_permissions
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load effective permissions' }, { status: 500 });
+  }
+}

src/app/api/user-permissions/[userId]/overrides/[overrideId]/route.ts

@@ -0,0 +1,71 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { userPermissionOverrideSchema } from '@/features/permission-management/schemas/user-permission-assignment';
+import {
+  deleteUserPermissionOverrideForOrganization,
+  updateUserPermissionOverrideForOrganization
+} from '@/features/permission-management/server/user-permission-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function PATCH(
+  request: NextRequest,
+  { params }: { params: Promise<{ userId: string; overrideId: string }> }
+) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const body = userPermissionOverrideSchema.parse(await request.json());
+    const routeParams = await params;
+    await updateUserPermissionOverrideForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      userId: routeParams.userId,
+      overrideId: Number(routeParams.overrideId),
+      payload: body
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'User permission override updated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to update permission override' }, { status: 500 });
+  }
+}
+
+export async function DELETE(
+  _: NextRequest,
+  { params }: { params: Promise<{ userId: string; overrideId: string }> }
+) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const routeParams = await params;
+    await deleteUserPermissionOverrideForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      userId: routeParams.userId,
+      overrideId: Number(routeParams.overrideId)
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'User permission override removed successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to remove permission override' }, { status: 500 });
+  }
+}

src/app/api/user-permissions/[userId]/overrides/route.ts

@@ -0,0 +1,39 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { userPermissionOverrideSchema } from '@/features/permission-management/schemas/user-permission-assignment';
+import { createUserPermissionOverrideForOrganization } from '@/features/permission-management/server/user-permission-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function POST(
+  request: NextRequest,
+  { params }: { params: Promise<{ userId: string }> }
+) {
+  try {
+    const { organization, session } = await requireSuperAdminOrganizationAccess();
+    const body = userPermissionOverrideSchema.parse(await request.json());
+    const overrideId = await createUserPermissionOverrideForOrganization({
+      organizationId: organization.id,
+      actorUserId: session.user.id,
+      userId: (await params).userId,
+      payload: body
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        message: 'User permission override created successfully',
+        override_id: overrideId
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json({ message: 'Unable to create permission override' }, { status: 500 });
+  }
+}

src/app/api/user-permissions/[userId]/route.ts

@@ -0,0 +1,31 @@
+import { NextResponse } from 'next/server';
+import { getUserPermissionAssignmentDetailForOrganization } from '@/features/permission-management/server/user-permission-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET(
+  _: Request,
+  { params }: { params: Promise<{ userId: string }> }
+) {
+  try {
+    const { organization } = await requireSuperAdminOrganizationAccess();
+    const detail = await getUserPermissionAssignmentDetailForOrganization({
+      organizationId: organization.id,
+      userId: (await params).userId
+    });
+
+    return NextResponse.json({
+      success: true,
+      detail
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && error.message === 'NOT_FOUND') {
+      return NextResponse.json({ message: 'User permission detail not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({ message: 'Unable to load user permission detail' }, { status: 500 });
+  }
+}

src/app/api/user-permissions/route.ts

@@ -0,0 +1,34 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { listUserPermissionAssignmentsForOrganization } from '@/features/permission-management/server/user-permission-data';
+import { AuthError, requireSuperAdminOrganizationAccess } from '@/lib/auth/session';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { organization } = await requireSuperAdminOrganizationAccess();
+    const result = await listUserPermissionAssignmentsForOrganization({
+      organizationId: organization.id,
+      filters: {
+        page: Number(request.nextUrl.searchParams.get('page') ?? 1),
+        limit: Number(request.nextUrl.searchParams.get('limit') ?? 10),
+        search: request.nextUrl.searchParams.get('search') ?? undefined,
+        sort: request.nextUrl.searchParams.get('sort') ?? undefined
+      }
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Loaded user permission assignments successfully',
+      total_user_permissions: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      user_permissions: result.userPermissions
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json({ message: 'Unable to load user permissions' }, { status: 500 });
+  }
+}

src/app/api/users/[id]/route.ts

@@ -0,0 +1,124 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { AuthError, requireUserManagementAccess } from '@/lib/auth/session';
+import {
+  deactivateUserForAccess,
+  getUserForAccess,
+  updateUserForAccess
+} from '@/features/users/server/user-data';
+
+type Params = { params: Promise<{ id: string }> };
+
+function getAccessContext(
+  access: Awaited<ReturnType<typeof requireUserManagementAccess>>
+) {
+  return {
+    currentUserId: access.session.user.id,
+    currentOrganizationId: access.organization.id,
+    membershipRole: access.membership.role,
+    businessRole: access.session.user.businessRole,
+    systemRole: access.session.user.systemRole
+  };
+}
+
+export async function GET(_request: NextRequest, { params }: Params) {
+  try {
+    const userManagementAccess = await requireUserManagementAccess();
+    const access = getAccessContext(userManagementAccess);
+    const { id } = await params;
+    const user = await getUserForAccess({ id, access });
+
+    if (!user) {
+      return NextResponse.json({ message: 'User not found' }, { status: 404 });
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: 'User loaded successfully',
+      user
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && error.message === 'FORBIDDEN') {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    return NextResponse.json({ message: 'Unable to load user' }, { status: 500 });
+  }
+}
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const userManagementAccess = await requireUserManagementAccess();
+    const access = getAccessContext(userManagementAccess);
+    const { id } = await params;
+    const body = await request.json();
+
+    await updateUserForAccess({
+      userId: id,
+      payload: body,
+      access
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'User updated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      if (error.message === 'FORBIDDEN' || error.message === 'ADMIN_ROLE_FORBIDDEN') {
+        return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+      }
+
+      if (error.message === 'USERNAME_EXISTS') {
+        return NextResponse.json({ message: 'Username already exists' }, { status: 400 });
+      }
+
+      if (error.message === 'NOT_FOUND') {
+        return NextResponse.json({ message: 'User not found' }, { status: 404 });
+      }
+    }
+
+    return NextResponse.json({ message: 'Unable to update user' }, { status: 500 });
+  }
+}
+
+export async function DELETE(_request: NextRequest, { params }: Params) {
+  try {
+    const userManagementAccess = await requireUserManagementAccess();
+    const access = getAccessContext(userManagementAccess);
+    const { id } = await params;
+
+    await deactivateUserForAccess({
+      userId: id,
+      access
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'User deactivated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      if (error.message === 'FORBIDDEN') {
+        return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+      }
+
+      if (error.message === 'NOT_FOUND') {
+        return NextResponse.json({ message: 'User not found' }, { status: 404 });
+      }
+    }
+
+    return NextResponse.json({ message: 'Unable to deactivate user' }, { status: 500 });
+  }
+}

src/app/api/users/route.ts

@@ -0,0 +1,121 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { AuthError, requireUserManagementAccess } from '@/lib/auth/session';
+import {
+  getUserMasterOptionsForAccess,
+  listUsersForAccess,
+  upsertUserForAccess
+} from '@/features/users/server/user-data';
+
+function getAccessContext(
+  access: Awaited<ReturnType<typeof requireUserManagementAccess>>
+) {
+  return {
+    currentUserId: access.session.user.id,
+    currentOrganizationId: access.organization.id,
+    membershipRole: access.membership.role,
+    businessRole: access.session.user.businessRole,
+    systemRole: access.session.user.systemRole
+  };
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const userManagementAccess = await requireUserManagementAccess();
+    const access = getAccessContext(userManagementAccess);
+    const mode = request.nextUrl.searchParams.get('mode');
+
+    if (mode === 'options') {
+      const options = await getUserMasterOptionsForAccess({ access });
+      return NextResponse.json(options);
+    }
+
+    const { searchParams } = request.nextUrl;
+    const result = await listUsersForAccess({
+      filters: {
+        page: Number(searchParams.get('page') ?? 1),
+        limit: Number(searchParams.get('limit') ?? 10),
+        roles: searchParams.get('roles') ?? undefined,
+        search: searchParams.get('search') ?? undefined,
+        sort: searchParams.get('sort') ?? undefined
+      },
+      access
+    });
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Users loaded successfully',
+      total_users: result.total,
+      offset: result.offset,
+      limit: result.limit,
+      users: result.users
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error && error.message === 'FORBIDDEN') {
+      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+    }
+
+    console.error('GET /api/users failed', error);
+
+    return NextResponse.json({ message: 'Unable to load users' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const userManagementAccess = await requireUserManagementAccess();
+    const access = getAccessContext(userManagementAccess);
+    const body = await request.json();
+    const userId = await upsertUserForAccess({
+      payload: body,
+      access
+    });
+
+    return NextResponse.json(
+      {
+        success: true,
+        message: 'User saved successfully',
+        user_id: userId
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      if (error.message === 'FORBIDDEN') {
+        return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
+      }
+
+      if (error.message === 'ORGANIZATION_REQUIRED') {
+        return NextResponse.json({ message: 'Organizer is required' }, { status: 400 });
+      }
+
+      if (error.message === 'PASSWORD_REQUIRED') {
+        return NextResponse.json(
+          { message: 'Password is required and must be at least 8 characters' },
+          { status: 400 }
+        );
+      }
+
+      if (error.message === 'USERNAME_EXISTS') {
+        return NextResponse.json({ message: 'Username already exists' }, { status: 400 });
+      }
+
+      if (error.message === 'ADMIN_ROLE_FORBIDDEN') {
+        return NextResponse.json(
+          { message: 'Only super admins can assign admin access' },
+          { status: 403 }
+        );
+      }
+    }
+
+    return NextResponse.json({ message: 'Unable to save user' }, { status: 500 });
+  }
+}

src/app/auth/layout.tsx

@@ -0,0 +1,12 @@
+import { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  robots: {
+    index: false,
+    follow: false
+  }
+};
+
+export default function AuthLayout({ children }: { children: React.ReactNode }) {
+  return children;
+}

src/app/auth/page.tsx

@@ -0,0 +1,13 @@
+import { Metadata } from 'next';
+import { redirect } from 'next/navigation';
+
+export const metadata: Metadata = {
+  robots: {
+    index: false,
+    follow: false
+  }
+};
+
+export default function AuthPage() {
+  redirect('/auth/sign-in');
+}

src/app/auth/sign-in/[[...sign-in]]/page.tsx

@@ -0,0 +1,11 @@
+import { Metadata } from 'next';
+import SignInViewPage from '@/features/auth/components/sign-in-view';
+
+export const metadata: Metadata = {
+  title: 'Authentication | Sign In',
+  description: 'Sign In page for authentication.'
+};
+
+export default async function Page() {
+  return <SignInViewPage />;
+}

src/app/auth/sign-up/[[...sign-up]]/page.tsx

@@ -0,0 +1,11 @@
+import { Metadata } from 'next';
+import SignUpViewPage from '@/features/auth/components/sign-up-view';
+
+export const metadata: Metadata = {
+  title: 'Authentication | Sign Up Disabled',
+  description: 'Sign-up is disabled. Accounts must be created by an administrator.'
+};
+
+export default async function Page() {
+  return <SignUpViewPage />;
+}

src/app/dashboard/announcements/[id]/error.tsx

@@ -0,0 +1,29 @@
+'use client';
+
+import PageContainer from '@/components/layout/page-container';
+import { Icons } from '@/components/icons';
+import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
+import { Button } from '@/components/ui/button';
+
+export default function AnnouncementDetailError({
+  error,
+  reset
+}: {
+  error: Error;
+  reset: () => void;
+}) {
+  return (
+    <PageContainer pageTitle='ประกาศ' pageDescription='เกิดข้อผิดพลาดระหว่างโหลดรายละเอียดประกาศ'>
+      <Alert variant='destructive' className='max-w-3xl'>
+        <Icons.alertCircle className='h-4 w-4' />
+        <AlertTitle>ไม่สามารถโหลดรายละเอียดประกาศได้</AlertTitle>
+        <AlertDescription className='space-y-3'>
+          <p>{error.message}</p>
+          <Button variant='outline' onClick={reset}>
+            ลองใหม่
+          </Button>
+        </AlertDescription>
+      </Alert>
+    </PageContainer>
+  );
+}

src/app/dashboard/announcements/[id]/loading.tsx

@@ -0,0 +1,26 @@
+import PageContainer from '@/components/layout/page-container';
+import { Card, CardContent, CardHeader } from '@/components/ui/card';
+import { Skeleton } from '@/components/ui/skeleton';
+
+export default function Loading() {
+  return (
+    <PageContainer pageTitle='ประกาศ' pageDescription='กำลังโหลดรายละเอียดประกาศ...'>
+      <Card>
+        <CardHeader className='space-y-4'>
+          <div className='flex gap-2'>
+            <Skeleton className='h-6 w-24' />
+            <Skeleton className='h-6 w-20' />
+          </div>
+          <Skeleton className='h-8 w-3/4' />
+          <Skeleton className='h-4 w-1/2' />
+        </CardHeader>
+        <CardContent className='space-y-4'>
+          <Skeleton className='h-4 w-full' />
+          <Skeleton className='h-4 w-full' />
+          <Skeleton className='h-4 w-5/6' />
+          <Skeleton className='h-24 w-full' />
+        </CardContent>
+      </Card>
+    </PageContainer>
+  );
+}

src/app/dashboard/announcements/[id]/page.tsx

@@ -0,0 +1,49 @@
+import { HydrationBoundary, dehydrate } from '@tanstack/react-query';
+import { notFound, redirect } from 'next/navigation';
+import PageContainer from '@/components/layout/page-container';
+import { announcementByIdOptions } from '@/features/announcements/api/queries';
+import AnnouncementViewPage from '@/features/announcements/components/announcement-view-page';
+import { hasAnyPermission } from '@/lib/auth/authorization';
+import { requireEmployeeDashboardAccess } from '@/lib/auth/page-guards';
+import { getQueryClient } from '@/lib/query-client';
+
+export const metadata = {
+  title: 'Dashboard : Announcement Detail'
+};
+
+type PageProps = {
+  params: Promise<{ id: string }>;
+};
+
+export default async function Page(props: PageProps) {
+  const access = await requireEmployeeDashboardAccess();
+  const params = await props.params;
+  const permissions = access.session.user.effectivePermissions;
+  const canCreateAnnouncements = hasAnyPermission(permissions, ['announcement:create']);
+
+  if (params.id === 'new' && !canCreateAnnouncements) {
+    redirect('/dashboard/announcements');
+  }
+
+  if (params.id !== 'new' && Number.isNaN(Number(params.id))) {
+    notFound();
+  }
+
+  const queryClient = getQueryClient();
+
+  if (params.id !== 'new') {
+    await queryClient.fetchQuery(announcementByIdOptions(Number(params.id)));
+  }
+
+  return (
+    <PageContainer>
+      <HydrationBoundary state={dehydrate(queryClient)}>
+        <AnnouncementViewPage
+          announcementId={params.id}
+          currentUserId={access.session.user.id}
+          permissions={permissions}
+        />
+      </HydrationBoundary>
+    </PageContainer>
+  );
+}

src/app/dashboard/announcements/error.tsx

@@ -0,0 +1,29 @@
+'use client';
+
+import PageContainer from '@/components/layout/page-container';
+import { Icons } from '@/components/icons';
+import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
+import { Button } from '@/components/ui/button';
+
+export default function AnnouncementsError({
+  error,
+  reset
+}: {
+  error: Error;
+  reset: () => void;
+}) {
+  return (
+    <PageContainer pageTitle='ประกาศ' pageDescription='เกิดข้อผิดพลาดระหว่างโหลดรายการประกาศ'>
+      <Alert variant='destructive' className='max-w-3xl'>
+        <Icons.alertCircle className='h-4 w-4' />
+        <AlertTitle>ไม่สามารถโหลดรายการประกาศได้</AlertTitle>
+        <AlertDescription className='space-y-3'>
+          <p>{error.message}</p>
+          <Button variant='outline' onClick={reset}>
+            ลองใหม่
+          </Button>
+        </AlertDescription>
+      </Alert>
+    </PageContainer>
+  );
+}

src/app/dashboard/announcements/loading.tsx

@@ -0,0 +1,32 @@
+import PageContainer from '@/components/layout/page-container';
+import { Card, CardContent, CardHeader } from '@/components/ui/card';
+import { Skeleton } from '@/components/ui/skeleton';
+
+export default function Loading() {
+  return (
+    <PageContainer pageTitle='ประกาศ' pageDescription='กำลังโหลดประกาศและไฟล์แนบล่าสุด...'>
+      <div className='space-y-6'>
+        <div className='flex flex-wrap gap-2'>
+          <Skeleton className='h-10 w-40' />
+          <Skeleton className='h-10 w-32' />
+          <Skeleton className='h-10 w-24' />
+        </div>
+        <div className='space-y-4'>
+          {Array.from({ length: 4 }).map((_, index) => (
+            <Card key={index}>
+              <CardHeader className='space-y-3'>
+                <Skeleton className='h-6 w-64' />
+                <Skeleton className='h-4 w-48' />
+              </CardHeader>
+              <CardContent className='space-y-3'>
+                <Skeleton className='h-4 w-full' />
+                <Skeleton className='h-4 w-full' />
+                <Skeleton className='h-4 w-2/3' />
+              </CardContent>
+            </Card>
+          ))}
+        </div>
+      </div>
+    </PageContainer>
+  );
+}

src/app/dashboard/announcements/page.tsx

@@ -0,0 +1,48 @@
+import type { SearchParams } from 'nuqs/server';
+import Link from 'next/link';
+import PageContainer from '@/components/layout/page-container';
+import { Icons } from '@/components/icons';
+import { Button } from '@/components/ui/button';
+import AnnouncementsListingPage from '@/features/announcements/components/announcements-listing';
+import { hasAnyPermission } from '@/lib/auth/authorization';
+import { requireEmployeeDashboardAccess } from '@/lib/auth/page-guards';
+import { searchParamsCache } from '@/lib/searchparams';
+
+export const metadata = {
+  title: 'Dashboard : Announcements'
+};
+
+type PageProps = {
+  searchParams: Promise<SearchParams>;
+};
+
+export default async function Page(props: PageProps) {
+  const access = await requireEmployeeDashboardAccess();
+  const searchParams = await props.searchParams;
+  searchParamsCache.parse(searchParams);
+
+  const permissions = access.session.user.effectivePermissions;
+  const canCreateAnnouncements = hasAnyPermission(permissions, ['announcement:create']);
+
+  return (
+    <PageContainer
+      pageTitle='ประกาศ'
+      pageDescription='ติดตามประกาศสำคัญขององค์กร พร้อมจัดการร่างประกาศ การเผยแพร่ และการปักหมุด'
+      pageHeaderAction={
+        canCreateAnnouncements ? (
+          <Button asChild>
+            <Link href='/dashboard/announcements/new'>
+              <Icons.add className='h-4 w-4' />
+              สร้างประกาศ
+            </Link>
+          </Button>
+        ) : null
+      }
+    >
+      <AnnouncementsListingPage
+        currentUserId={access.session.user.id}
+        permissions={permissions}
+      />
+    </PageContainer>
+  );
+}

src/app/dashboard/audit-logs/page.tsx

@@ -0,0 +1,29 @@
+import type { SearchParams } from 'nuqs/server';
+import PageContainer from '@/components/layout/page-container';
+import AuditLogListingPage from '@/features/audit-logs/components/audit-log-listing';
+import { requireITDashboardAccess } from '@/lib/auth/page-guards';
+import { searchParamsCache } from '@/lib/searchparams';
+
+export const metadata = {
+  title: 'แดชบอร์ด: Audit Log'
+};
+
+type PageProps = {
+  searchParams: Promise<SearchParams>;
+};
+
+export default async function Page(props: PageProps) {
+  await requireITDashboardAccess();
+
+  const searchParams = await props.searchParams;
+  searchParamsCache.parse(searchParams);
+
+  return (
+    <PageContainer
+      pageTitle='Audit Log'
+      pageDescription='ตรวจสอบประวัติการใช้งานและรายการสำคัญของระบบ'
+    >
+      <AuditLogListingPage />
+    </PageContainer>
+  );
+}

src/app/dashboard/billing/page.tsx

@@ -0,0 +1,70 @@
+'use client';
+
+import PageContainer from '@/components/layout/page-container';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { Alert, AlertDescription } from '@/components/ui/alert';
+import { Icons } from '@/components/icons';
+import { billingInfoContent } from '@/config/infoconfig';
+import { useSession } from 'next-auth/react';
+
+export default function BillingPage() {
+  const { data: session, status } = useSession();
+  const activeOrganization = session?.user?.organizations.find(
+    (organization) => organization.id === session?.user?.activeOrganizationId
+  );
+
+  return (
+    <PageContainer
+      isLoading={status === 'loading'}
+      access={!!activeOrganization}
+      accessFallback={
+        <div className='flex min-h-[400px] items-center justify-center'>
+          <div className='space-y-2 text-center'>
+            <h2 className='text-2xl font-semibold'>No Workspace Selected</h2>
+            <p className='text-muted-foreground'>
+              Please select or create a workspace to view billing placeholders.
+            </p>
+          </div>
+        </div>
+      }
+      infoContent={billingInfoContent}
+      pageTitle='Billing & Plans'
+      pageDescription={`Review the current plan state for ${activeOrganization?.name ?? 'your workspace'}`}
+    >
+      <div className='space-y-6'>
+        <Alert>
+          <Icons.info className='h-4 w-4' />
+          <AlertDescription>
+            Clerk Billing has been removed from this route. Plan enforcement now reads app-owned
+            workspace data, and payment provider integration can be added later.
+          </AlertDescription>
+        </Alert>
+
+        <Card>
+          <CardHeader>
+            <CardTitle>Current plan</CardTitle>
+            <CardDescription>
+              This page is intentionally lightweight while billing is no longer vendor-managed.
+            </CardDescription>
+          </CardHeader>
+          <CardContent className='space-y-4'>
+            <div className='rounded-lg border p-4'>
+              <div className='text-muted-foreground text-sm'>Workspace</div>
+              <div className='text-lg font-semibold'>{activeOrganization?.name}</div>
+            </div>
+            <div className='rounded-lg border p-4'>
+              <div className='text-muted-foreground text-sm'>Plan</div>
+              <div className='text-lg font-semibold capitalize'>
+                {activeOrganization?.plan ?? 'free'}
+              </div>
+            </div>
+            <div className='text-muted-foreground rounded-lg border border-dashed p-4 text-sm'>
+              Add subscriptions, invoices, and provider sync in a later pass. The `organizations`
+              table is already the source of truth for plan gates.
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+    </PageContainer>
+  );
+}

src/app/dashboard/chat/page.tsx

@@ -0,0 +1,9 @@
+import ChatViewPage from '@/features/chat/components/chat-view-page';
+
+export const metadata = {
+  title: 'Dashboard: Chat'
+};
+
+export default function Page() {
+  return <ChatViewPage />;
+}

src/app/dashboard/courses/[courseId]/error.tsx

@@ -0,0 +1,26 @@
+'use client';
+
+import PageContainer from '@/components/layout/page-container';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+
+export default function Error({
+  reset
+}: {
+  error: Error & { digest?: string };
+  reset: () => void;
+}) {
+  return (
+    <PageContainer>
+      <Card>
+        <CardHeader>
+          <CardTitle>Unable to load course details</CardTitle>
+          <CardDescription>Refresh this page and try again.</CardDescription>
+        </CardHeader>
+        <CardContent>
+          <Button onClick={reset}>Try again</Button>
+        </CardContent>
+      </Card>
+    </PageContainer>
+  );
+}

src/app/dashboard/courses/[courseId]/loading.tsx

@@ -0,0 +1,21 @@
+import PageContainer from '@/components/layout/page-container';
+import { Card, CardContent, CardHeader } from '@/components/ui/card';
+import { Skeleton } from '@/components/ui/skeleton';
+
+export default function Loading() {
+  return (
+    <PageContainer>
+      <Card>
+        <CardHeader className='space-y-2'>
+          <Skeleton className='h-8 w-48' />
+          <Skeleton className='h-4 w-72' />
+        </CardHeader>
+        <CardContent className='grid grid-cols-1 gap-6 md:grid-cols-2'>
+          {Array.from({ length: 8 }).map((_, index) => (
+            <Skeleton key={index} className='h-10 w-full' />
+          ))}
+        </CardContent>
+      </Card>
+    </PageContainer>
+  );
+}

src/app/dashboard/courses/[courseId]/page.tsx

@@ -0,0 +1,33 @@
+import { HydrationBoundary, dehydrate } from '@tanstack/react-query';
+import { getQueryClient } from '@/lib/query-client';
+import { courseByIdOptions } from '@/features/courses/api/queries';
+import PageContainer from '@/components/layout/page-container';
+import CourseViewPage from '@/features/courses/components/course-view-page';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+
+export const metadata = {
+  title: 'Dashboard : Course View'
+};
+
+type PageProps = { params: Promise<{ courseId: string }> };
+
+export default async function Page(props: PageProps) {
+  await requireHRDDashboardAccess();
+
+  const params = await props.params;
+  const queryClient = getQueryClient();
+
+  if (params.courseId !== 'new') {
+    await queryClient.fetchQuery(courseByIdOptions(Number(params.courseId)));
+  }
+
+  return (
+    <PageContainer>
+      <div className='flex-1 space-y-4'>
+        <HydrationBoundary state={dehydrate(queryClient)}>
+          <CourseViewPage courseId={params.courseId} />
+        </HydrationBoundary>
+      </div>
+    </PageContainer>
+  );
+}

src/app/dashboard/courses/error.tsx

@@ -0,0 +1,29 @@
+'use client';
+
+import PageContainer from '@/components/layout/page-container';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+
+export default function Error({
+  reset
+}: {
+  error: Error & { digest?: string };
+  reset: () => void;
+}) {
+  return (
+    <PageContainer
+      pageTitle='หลักสูตร'
+      pageDescription='จัดการหลักสูตร ระยะเวลารับรอง และกติกาการอบรมที่จำเป็น'
+    >
+      <Card>
+        <CardHeader>
+          <CardTitle>ไม่สามารถโหลดข้อมูลหลักสูตรได้</CardTitle>
+          <CardDescription>รีเฟรชหน้านี้แล้วลองใหม่อีกครั้ง</CardDescription>
+        </CardHeader>
+        <CardContent>
+          <Button onClick={reset}>ลองใหม่</Button>
+        </CardContent>
+      </Card>
+    </PageContainer>
+  );
+}

src/app/dashboard/courses/loading.tsx

@@ -0,0 +1,29 @@
+import PageContainer from '@/components/layout/page-container';
+import { Card, CardContent, CardHeader } from '@/components/ui/card';
+import { Skeleton } from '@/components/ui/skeleton';
+
+export default function Loading() {
+  return (
+    <PageContainer
+      pageTitle='หลักสูตร'
+      pageDescription='กำลังโหลดข้อมูลหลักสูตร ระยะเวลารับรอง และกติกาการอบรม...'
+    >
+      <Card>
+        <CardHeader className='space-y-2'>
+          <Skeleton className='h-8 w-48' />
+          <Skeleton className='h-4 w-72' />
+        </CardHeader>
+        <CardContent className='space-y-4'>
+          <div className='flex gap-2'>
+            <Skeleton className='h-8 w-56' />
+            <Skeleton className='h-8 w-36' />
+            <Skeleton className='h-8 w-36' />
+          </div>
+          {Array.from({ length: 6 }).map((_, index) => (
+            <Skeleton key={index} className='h-12 w-full' />
+          ))}
+        </CardContent>
+      </Card>
+    </PageContainer>
+  );
+}

src/app/dashboard/courses/page.tsx

@@ -0,0 +1,41 @@
+import PageContainer from "@/components/layout/page-container";
+import { buttonVariants } from "@/components/ui/button";
+import CourseListingPage from "@/features/courses/components/course-listing";
+import { requireHRDDashboardAccess } from "@/lib/auth/page-guards";
+import { searchParamsCache } from "@/lib/searchparams";
+import { cn } from "@/lib/utils";
+import { Icons } from "@/components/icons";
+import Link from "next/link";
+import { SearchParams } from "nuqs/server";
+
+export const metadata = {
+  title: "แดชบอร์ด: หลักสูตร",
+};
+
+type PageProps = {
+  searchParams: Promise<SearchParams>;
+};
+
+export default async function Page(props: PageProps) {
+  await requireHRDDashboardAccess();
+
+  const searchParams = await props.searchParams;
+  searchParamsCache.parse(searchParams);
+
+  return (
+    <PageContainer
+      pageTitle="หลักสูตร"
+      pageDescription="จัดการหลักสูตรภายในบริษัท"
+      pageHeaderAction={
+        <Link
+          href="/dashboard/courses/new"
+          className={cn(buttonVariants(), "text-xs md:text-sm")}
+        >
+          <Icons.add className="mr-2 h-4 w-4" /> เพิ่มหลักสูตร
+        </Link>
+      }
+    >
+      <CourseListingPage />
+    </PageContainer>
+  );
+}

src/app/dashboard/elements/icons/page.tsx

@@ -0,0 +1,9 @@
+import IconsViewPage from '@/features/elements/components/icons-view-page';
+
+export const metadata = {
+  title: 'Dashboard : Icons'
+};
+
+export default function page() {
+  return <IconsViewPage />;
+}

src/app/dashboard/employee-directory/[id]/edit/page.tsx

@@ -0,0 +1,40 @@
+import { notFound } from 'next/navigation';
+import PageContainer from '@/components/layout/page-container';
+import EmployeeForm from '@/features/employees/components/employee-form';
+import {
+  getEmployeeByIdForOrganization,
+  serializeEmployee
+} from '@/features/employees/server/employee-data';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+
+export const metadata = {
+  title: 'Dashboard: Edit Employee'
+};
+
+type PageProps = {
+  params: Promise<{ id: string }>;
+};
+
+export default async function Page(props: PageProps) {
+  const access = await requireHRDDashboardAccess();
+  const params = await props.params;
+  const employee = await getEmployeeByIdForOrganization({
+    id: Number(params.id),
+    organizationId: access.organization.id
+  });
+
+  if (!employee) {
+    notFound();
+  }
+
+  return (
+    <PageContainer pageTitle='แก้ไขข้อมูลพนักงาน' pageDescription='ปรับปรุงข้อมูล Employee Master'>
+      <EmployeeForm
+        initialData={serializeEmployee(employee)}
+        pageTitle='แก้ไขข้อมูลพนักงาน'
+        organizationName={access.organization.name}
+        returnPath='/dashboard/employee-directory'
+      />
+    </PageContainer>
+  );
+}

src/app/dashboard/employee-directory/[id]/page.tsx

@@ -0,0 +1,28 @@
+import PageContainer from '@/components/layout/page-container';
+import { EmployeeDirectoryDetailPage } from '@/features/employee-directory/components/employee-directory-detail-page';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+
+export const metadata = {
+  title: 'Dashboard: Employee Directory Detail'
+};
+
+type PageProps = {
+  params: Promise<{ id: string }>;
+};
+
+export default async function Page(props: PageProps) {
+  const access = await requireHRDDashboardAccess();
+  const params = await props.params;
+
+  return (
+    <PageContainer
+      pageTitle='รายชื่อพนักงานทั้งหมด'
+      pageDescription='รายละเอียดข้อมูลพนักงาน ชั่วโมงอบรม และประวัติการอบรมรายบุคคล'
+    >
+      <EmployeeDirectoryDetailPage
+        organizationId={access.organization.id}
+        employeeId={params.id}
+      />
+    </PageContainer>
+  );
+}

src/app/dashboard/employee-directory/[id]/targets/page.tsx

@@ -0,0 +1,35 @@
+import { HydrationBoundary, dehydrate } from '@tanstack/react-query';
+import PageContainer from '@/components/layout/page-container';
+import { employeeDirectoryTargetQueryOptions } from '@/features/employee-directory/api/queries';
+import { EmployeeTargetForm } from '@/features/employee-directory/components/employee-target-form';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+import { getQueryClient } from '@/lib/query-client';
+
+export const metadata = {
+  title: 'Dashboard: Employee Targets'
+};
+
+type PageProps = {
+  params: Promise<{ id: string }>;
+};
+
+export default async function Page(props: PageProps) {
+  await requireHRDDashboardAccess();
+  const params = await props.params;
+  const year = new Date().getUTCFullYear();
+  const employeeId = Number(params.id);
+  const queryClient = getQueryClient();
+
+  await queryClient.fetchQuery(employeeDirectoryTargetQueryOptions(employeeId, year));
+
+  return (
+    <PageContainer
+      pageTitle='กำหนดเป้าหมาย K / S / A'
+      pageDescription='จัดการเป้าหมายชั่วโมงอบรมรายบุคคล'
+    >
+      <HydrationBoundary state={dehydrate(queryClient)}>
+        <EmployeeTargetForm employeeId={employeeId} year={year} />
+      </HydrationBoundary>
+    </PageContainer>
+  );
+}

src/app/dashboard/employee-directory/create/page.tsx

@@ -0,0 +1,25 @@
+import PageContainer from '@/components/layout/page-container';
+import EmployeeForm from '@/features/employees/components/employee-form';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+
+export const metadata = {
+  title: 'Dashboard: Create Employee'
+};
+
+export default async function Page() {
+  const access = await requireHRDDashboardAccess();
+
+  return (
+    <PageContainer
+      pageTitle='สร้างรายชื่อพนักงาน'
+      pageDescription='เพิ่มข้อมูลพนักงานเข้าสู่ Employee Directory'
+    >
+      <EmployeeForm
+        initialData={null}
+        pageTitle='สร้างรายชื่อพนักงาน'
+        organizationName={access.organization.name}
+        returnPath='/dashboard/employee-directory'
+      />
+    </PageContainer>
+  );
+}

src/app/dashboard/employee-directory/page.tsx

@@ -0,0 +1,46 @@
+import PageContainer from '@/components/layout/page-container';
+import { EmployeeDirectoryHeader } from '@/features/employee-directory/components/employee-directory-header';
+import EmployeeDirectoryListingPage from '@/features/employee-directory/components/employee-directory-listing';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+import { searchParamsCache } from '@/lib/searchparams';
+import type { SearchParams } from 'nuqs/server';
+
+export const metadata = {
+  title: 'Dashboard: Employee Directory'
+};
+
+type PageProps = {
+  searchParams: Promise<SearchParams>;
+};
+
+export default async function Page(props: PageProps) {
+  await requireHRDDashboardAccess();
+
+  const searchParams = await props.searchParams;
+  searchParamsCache.parse(searchParams);
+  const search = searchParamsCache.get('search');
+  const company = searchParamsCache.get('company');
+  const department = searchParamsCache.get('department');
+  const position = searchParamsCache.get('position');
+  const status = searchParamsCache.get('status');
+  const sort = searchParamsCache.get('sort');
+  const filters = {
+    page: searchParamsCache.get('page'),
+    limit: searchParamsCache.get('perPage'),
+    ...(search ? { search } : {}),
+    ...(company ? { company } : {}),
+    ...(department ? { department } : {}),
+    ...(position ? { position } : {}),
+    ...(status ? { status } : {}),
+    ...(sort ? { sort } : {})
+  };
+
+  return (
+    <PageContainer>
+      <div className='flex min-w-0 flex-1 flex-col gap-4 md:gap-5'>
+        <EmployeeDirectoryHeader />
+        <EmployeeDirectoryListingPage filters={filters} />
+      </div>
+    </PageContainer>
+  );
+}

src/app/dashboard/employees/[employeeId]/page.tsx

@@ -0,0 +1,11 @@
+import { redirect } from 'next/navigation';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+
+export const metadata = {
+  title: 'Dashboard: Users'
+};
+
+export default async function Page() {
+  await requireHRDDashboardAccess();
+  redirect('/dashboard/users');
+}

src/app/dashboard/employees/page.tsx

@@ -0,0 +1,11 @@
+import { redirect } from 'next/navigation';
+import { requireHRDDashboardAccess } from '@/lib/auth/page-guards';
+
+export const metadata = {
+  title: 'Dashboard: Users'
+};
+
+export default async function Page() {
+  await requireHRDDashboardAccess();
+  redirect('/dashboard/users');
+}

src/app/dashboard/exclusive/page.tsx

@@ -0,0 +1,61 @@
+import PageContainer from '@/components/layout/page-container';
+import { auth } from '@/auth';
+import { Alert, AlertDescription } from '@/components/ui/alert';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { Icons } from '@/components/icons';
+import Link from 'next/link';
+
+export default async function ExclusivePage() {
+  const session = await auth();
+  const activeOrganizationName = session?.user?.activeOrganizationName;
+  const activePlan = session?.user?.activeOrganizationPlan;
+
+  return (
+    <PageContainer>
+      {activePlan !== 'pro' ? (
+        <div className='flex h-full items-center justify-center'>
+          <Alert>
+            <Icons.lock className='h-5 w-5 text-yellow-600' />
+            <AlertDescription>
+              <div className='mb-1 text-lg font-semibold'>Pro Plan Required</div>
+              <div className='text-muted-foreground'>
+                This page is only available to workspaces on the <span className='font-semibold'>Pro</span>{' '}
+                plan.
+                <br />
+                Upgrade your workspace later through the app-owned{' '}
+                <Link className='underline' href='/dashboard/billing'>
+                  Billing &amp; Plans
+                </Link>{' '}
+                flow.
+              </div>
+            </AlertDescription>
+          </Alert>
+        </div>
+      ) : (
+        <div className='space-y-6'>
+          <div>
+            <h1 className='flex items-center gap-2 text-3xl font-bold tracking-tight'>
+              <Icons.badgeCheck className='h-7 w-7 text-green-600' />
+              Exclusive Area
+            </h1>
+            <p className='text-muted-foreground'>
+              Welcome, <span className='font-semibold'>{activeOrganizationName}</span>! This page
+              remains gated by the workspace plan stored in your own database.
+            </p>
+          </div>
+          <Card>
+            <CardHeader>
+              <CardTitle>Exclusive content enabled</CardTitle>
+              <CardDescription>
+                Your active workspace currently satisfies the `pro` plan gate.
+              </CardDescription>
+            </CardHeader>
+            <CardContent>
+              <div className='text-lg'>Have a wonderful day!</div>
+            </CardContent>
+          </Card>
+        </div>
+      )}
+    </PageContainer>
+  );
+}

src/app/dashboard/forms/advanced/page.tsx

@@ -0,0 +1,17 @@
+import PageContainer from '@/components/layout/page-container';
+import AdvancedFormPatterns from '@/features/forms/components/advanced-form-patterns';
+
+export const metadata = {
+  title: 'Dashboard: Advanced Form Patterns'
+};
+
+export default function Page() {
+  return (
+    <PageContainer
+      pageTitle='Advanced Form Patterns'
+      pageDescription='Linked fields, async validation, dynamic rows, nested objects, cross-field validation, and form-level errors.'
+    >
+      <AdvancedFormPatterns />
+    </PageContainer>
+  );
+}

src/app/dashboard/forms/basic/page.tsx

@@ -0,0 +1,17 @@
+import PageContainer from '@/components/layout/page-container';
+import DemoForm from '@/components/forms/demo-form';
+
+export const metadata = {
+  title: 'Dashboard: Basic Form'
+};
+
+export default function Page() {
+  return (
+    <PageContainer
+      pageTitle='Basic Form'
+      pageDescription='A comprehensive form demo with all field types.'
+    >
+      <DemoForm />
+    </PageContainer>
+  );
+}

src/app/dashboard/forms/multi-step/page.tsx

@@ -0,0 +1,14 @@
+import PageContainer from '@/components/layout/page-container';
+import FormsShowcasePage from '@/features/forms/components/forms-showcase-page';
+
+export const metadata = {
+  title: 'Dashboard: Multi-Step Form'
+};
+
+export default function Page() {
+  return (
+    <PageContainer pageTitle='Multi-Step Form' pageDescription='Multi-step wizard form pattern.'>
+      <FormsShowcasePage />
+    </PageContainer>
+  );
+}

src/app/dashboard/forms/page.tsx

@@ -0,0 +1,5 @@
+import { redirect } from 'next/navigation';
+
+export default function Page() {
+  redirect('/dashboard/forms/basic');
+}

src/app/dashboard/forms/sheet-form/page.tsx

@@ -0,0 +1,17 @@
+import PageContainer from '@/components/layout/page-container';
+import SheetFormDemo from '@/features/forms/components/sheet-form-demo';
+
+export const metadata = {
+  title: 'Dashboard: Sheet Form'
+};
+
+export default function Page() {
+  return (
+    <PageContainer
+      pageTitle='Sheet & Dialog Forms'
+      pageDescription='Form patterns inside sheets and dialogs with external submit buttons.'
+    >
+      <SheetFormDemo />
+    </PageContainer>
+  );
+}

src/app/dashboard/import-employees/error.tsx

@@ -0,0 +1,29 @@
+'use client';
+
+import PageContainer from '@/components/layout/page-container';
+import { Icons } from '@/components/icons';
+import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
+import { Button } from '@/components/ui/button';
+
+export default function ImportEmployeesError({
+  error,
+  reset
+}: {
+  error: Error;
+  reset: () => void;
+}) {
+  return (
+    <PageContainer pageTitle='นำเข้าพนักงาน' pageDescription='เกิดข้อผิดพลาดระหว่างโหลดหน้าจอนำเข้า'>
+      <Alert variant='destructive' className='max-w-3xl'>
+        <Icons.alertCircle className='h-4 w-4' />
+        <AlertTitle>ไม่สามารถโหลดหน้าจอนำเข้าพนักงานได้</AlertTitle>
+        <AlertDescription className='space-y-3'>
+          <p>{error.message}</p>
+          <Button variant='outline' onClick={reset}>
+            ลองใหม่
+          </Button>
+        </AlertDescription>
+      </Alert>
+    </PageContainer>
+  );
+}

src/app/dashboard/import-employees/loading.tsx

@@ -0,0 +1,36 @@
+import PageContainer from '@/components/layout/page-container';
+import { Card, CardContent, CardHeader } from '@/components/ui/card';
+import { Skeleton } from '@/components/ui/skeleton';
+
+export default function Loading() {
+  return (
+    <PageContainer pageTitle='นำเข้าพนักงาน' pageDescription='กำลังโหลดหน้าจอนำเข้าพนักงาน...'>
+      <div className='grid gap-4 lg:grid-cols-[1.1fr_0.9fr]'>
+        <Card>
+          <CardHeader className='space-y-3'>
+            <Skeleton className='h-7 w-48' />
+            <Skeleton className='h-4 w-full' />
+          </CardHeader>
+          <CardContent className='space-y-4'>
+            <Skeleton className='h-10 w-full' />
+            <div className='flex gap-2'>
+              <Skeleton className='h-10 w-40' />
+              <Skeleton className='h-10 w-40' />
+            </div>
+          </CardContent>
+        </Card>
+        <Card>
+          <CardHeader className='space-y-3'>
+            <Skeleton className='h-7 w-48' />
+            <Skeleton className='h-4 w-full' />
+          </CardHeader>
+          <CardContent className='space-y-2'>
+            {Array.from({ length: 7 }).map((_, index) => (
+              <Skeleton key={index} className='h-10 w-full' />
+            ))}
+          </CardContent>
+        </Card>
+      </div>
+    </PageContainer>
+  );
+}