import { NextRequest, NextResponse } from 'next/server';

const OSS_URL = process.env.OSS_URL || 'http://localhost:9000';
const API_KEY = process.env.OSS_API_KEY || '7cf93760ea49b750c96e6078b364e5f0';

export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ fileKey: string }> }
) {
  try {
    const { fileKey } = await params;
    
    const res = await fetch(`${OSS_URL}/api/files/${fileKey}/preview?key=${API_KEY}`);
    
    if (!res.ok) {
      return new NextResponse('File not found', { status: 404 });
    }
    
    const imageBuffer = await res.arrayBuffer();
    
    return new NextResponse(imageBuffer, {
      headers: {
        'Content-Type': 'image/jpeg',
        'Cache-Control': 'public, max-age=31536000',
      },
    });
  } catch (error) {
    console.error('Proxy error:', error);
    return new NextResponse('Error', { status: 500 });
  }
}