import { NextRequest, NextResponse } from 'next/server';
import {
  downloadArtifact,
  getArtifact
} from '@/features/foundation/document-artifact/server/service';
import {
  auditCrmSecurityEvent,
  buildCrmSecurityContext,
  canViewQuotationPricing
} from '@/features/crm/security/server/service';
import { PERMISSIONS } from '@/lib/auth/rbac';
import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';

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

export async function GET(_request: NextRequest, { params }: Params) {
  try {
    const { id } = await params;
    const { organization, session, membership } = await requireOrganizationAccess({
      permission: PERMISSIONS.crmDocumentArtifactDownload
    });
    const securityContext = buildCrmSecurityContext({
      organizationId: organization.id,
      userId: session.user.id,
      membership
    });
    const artifact = await getArtifact(id, organization.id);

    if (
      artifact.entityType === 'quotation' &&
      artifact.artifactType === 'approved_pdf' &&
      !canViewQuotationPricing(securityContext)
    ) {
      await auditCrmSecurityEvent({
        organizationId: organization.id,
        userId: session.user.id,
        action: 'pricing_hidden',
        entityType: artifact.entityType,
        entityId: artifact.entityId,
        reason: 'Approved quotation artifact download requires pricing visibility',
        metadata: { artifactId: artifact.id }
      });
      return NextResponse.json({ message: 'Forbidden' }, { status: 403 });
    }

    const { object } = await downloadArtifact({
      artifactId: id,
      organizationId: organization.id,
      userId: session.user.id,
      auditDownload: true
    });

    return new NextResponse(object.body, {
      headers: {
        'Content-Type': object.contentType,
        'Content-Disposition': `inline; filename="${object.fileName || 'artifact'}"`
      }
    });
  } catch (error) {
    if (error instanceof AuthError) {
      return NextResponse.json({ message: error.message }, { status: error.status });
    }

    return NextResponse.json({ message: 'Unable to download document artifact' }, { status: 500 });
  }
}