import { NextRequest, NextResponse } from 'next/server';
import { requireAdmin } from '@/lib/auth';
import { generateUploadPresignedUrl } from '@/lib/s3';

// POST /api/upload/presigned-url
// Generates a secure PutObject S3 Presigned URL for direct client-side upload
export async function POST(req: NextRequest) {
  const auth = requireAdmin(req);
  if (auth instanceof NextResponse) return auth;

  try {
    const body = await req.json();
    const { filename, fileType, category = 'lessons-videos' } = body;

    if (!filename || !fileType) {
      return NextResponse.json(
        { success: false, error: 'filename and fileType are required' },
        { status: 400 }
      );
    }

    const result = await generateUploadPresignedUrl(filename, fileType, category);

    return NextResponse.json({
      success: true,
      message: 'Presigned upload URL generated successfully',
      ...result,
    });
  } catch (error: any) {
    return NextResponse.json(
      { success: false, error: error.message || 'Failed to generate S3 presigned URL' },
      { status: 500 }
    );
  }
}