import { NextRequest, NextResponse } from 'next/server';
import { z } from 'zod';
import { auditCreate, auditDelete, auditUpdate } from '@/features/foundation/audit-log/service';
import {
  createQuotationAttachment,
  getQuotationDetail,
  listQuotationAttachments,
  softDeleteQuotationAttachment,
  updateQuotationAttachment
} from '@/features/crm/quotations/server/service';
import { quotationAttachmentSchema } from '@/features/crm/quotations/schemas/quotation.schema';
import { PERMISSIONS } from '@/lib/auth/rbac';
import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';

type Params = {
  params: Promise<{ id: string }>;
};

const updateSchema = quotationAttachmentSchema.extend({
  id: z.string().min(1, 'Attachment id is required')
});

const deleteSchema = z.object({
  id: z.string().min(1, 'Attachment id is required')
});

export async function GET(_request: NextRequest, { params }: Params) {
  try {
    const { id } = await params;
    const { organization } = await requireOrganizationAccess({
      permission: PERMISSIONS.crmQuotationRead
    });
    const items = await listQuotationAttachments(id, organization.id);

    return NextResponse.json({
      success: true,
      time: new Date().toISOString(),
      message: 'Quotation attachments loaded successfully',
      items
    });
  } 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 load quotation attachments' }, { status: 500 });
  }
}

export async function POST(request: NextRequest, { params }: Params) {
  try {
    const { id } = await params;
    const { organization, session } = await requireOrganizationAccess({
      permission: PERMISSIONS.crmQuotationAttachmentManage
    });
    const payload = quotationAttachmentSchema.parse(await request.json());
    const quotation = await getQuotationDetail(id, organization.id);
    const created = await createQuotationAttachment(id, organization.id, session.user.id, payload);

    await auditCreate({
      organizationId: organization.id,
      branchId: quotation.branchId,
      userId: session.user.id,
      entityType: 'crm_quotation_attachment',
      entityId: created.id,
      afterData: created
    });

    return NextResponse.json(
      {
        success: true,
        message: 'Quotation attachment created successfully',
        attachment: created
      },
      { status: 201 }
    );
  } catch (error) {
    if (error instanceof AuthError) {
      return NextResponse.json({ message: error.message }, { status: error.status });
    }

    if (error instanceof z.ZodError) {
      return NextResponse.json(
        { message: error.issues[0]?.message ?? 'Invalid payload' },
        { status: 400 }
      );
    }

    if (error instanceof Error) {
      return NextResponse.json({ message: error.message }, { status: 400 });
    }

    return NextResponse.json({ message: 'Unable to create quotation attachment' }, { status: 500 });
  }
}

export async function PATCH(request: NextRequest, { params }: Params) {
  try {
    const { id } = await params;
    const { organization, session } = await requireOrganizationAccess({
      permission: PERMISSIONS.crmQuotationAttachmentManage
    });
    const payload = updateSchema.parse(await request.json());
    const quotation = await getQuotationDetail(id, organization.id);
    const before = (await listQuotationAttachments(id, organization.id)).find(
      (item) => item.id === payload.id
    );

    if (!before) {
      return NextResponse.json({ message: 'Quotation attachment not found' }, { status: 404 });
    }

    const updated = await updateQuotationAttachment(id, payload.id, organization.id, payload);

    await auditUpdate({
      organizationId: organization.id,
      branchId: quotation.branchId,
      userId: session.user.id,
      entityType: 'crm_quotation_attachment',
      entityId: payload.id,
      beforeData: before,
      afterData: updated
    });

    return NextResponse.json({
      success: true,
      message: 'Quotation attachment updated successfully',
      attachment: updated
    });
  } catch (error) {
    if (error instanceof AuthError) {
      return NextResponse.json({ message: error.message }, { status: error.status });
    }

    if (error instanceof z.ZodError) {
      return NextResponse.json(
        { message: error.issues[0]?.message ?? 'Invalid payload' },
        { status: 400 }
      );
    }

    if (error instanceof Error) {
      return NextResponse.json({ message: error.message }, { status: 400 });
    }

    return NextResponse.json({ message: 'Unable to update quotation attachment' }, { status: 500 });
  }
}

export async function DELETE(request: NextRequest, { params }: Params) {
  try {
    const { id } = await params;
    const { organization, session } = await requireOrganizationAccess({
      permission: PERMISSIONS.crmQuotationAttachmentManage
    });
    const payload = deleteSchema.parse(await request.json());
    const quotation = await getQuotationDetail(id, organization.id);
    const before = (await listQuotationAttachments(id, organization.id)).find(
      (item) => item.id === payload.id
    );

    if (!before) {
      return NextResponse.json({ message: 'Quotation attachment not found' }, { status: 404 });
    }

    const updated = await softDeleteQuotationAttachment(id, payload.id, organization.id);

    await auditDelete({
      organizationId: organization.id,
      branchId: quotation.branchId,
      userId: session.user.id,
      entityType: 'crm_quotation_attachment',
      entityId: payload.id,
      beforeData: before,
      afterData: updated
    });

    return NextResponse.json({
      success: true,
      message: 'Quotation attachment deleted successfully'
    });
  } catch (error) {
    if (error instanceof AuthError) {
      return NextResponse.json({ message: error.message }, { status: error.status });
    }

    if (error instanceof z.ZodError) {
      return NextResponse.json(
        { message: error.issues[0]?.message ?? 'Invalid payload' },
        { status: 400 }
      );
    }

    if (error instanceof Error) {
      return NextResponse.json({ message: error.message }, { status: 400 });
    }

    return NextResponse.json({ message: 'Unable to delete quotation attachment' }, { status: 500 });
  }
}
