import { NextRequest, NextResponse } from 'next/server';
import { getServerSession } from 'next-auth';
import { authOptions } from '@/app/api/auth/options';
import { S3Client, GetObjectCommand } from '@aws-sdk/client-s3';
import { S3_CONFIG } from '@/lib/s3';
import { NoSuchKey } from '@aws-sdk/client-s3';

// Initialize S3 client
const s3Client = new S3Client({
  region: S3_CONFIG.region,
  endpoint: S3_CONFIG.endpoint,
  credentials: {
    accessKeyId: S3_CONFIG.accessKey || '',
    secretAccessKey: S3_CONFIG.secretKey || ''
  },
  forcePathStyle: true // Required for MinIO
});

// This endpoint serves mission images from Minio using the server's credentials
export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ path: string[] }> }
) {
  try {
    const { path: pathSegments } = await params;
    if (!pathSegments || pathSegments.length === 0) {
      return new NextResponse('Path is required', { status: 400 });
    }

    // Reconstruct the full path from path segments
    const filePath = pathSegments.join('/');
    console.log('Fetching mission image:', filePath);

    // Ensure the path has the missions/ prefix
    const minioPath = filePath.startsWith('missions/') ? filePath : `missions/${filePath}`;
    console.log('Full Minio path:', minioPath);

    const command = new GetObjectCommand({
      Bucket: process.env.MINIO_BUCKET_NAME || 'missions',
      Key: minioPath,
    });

    try {
      const response = await s3Client.send(command);
      if (!response.Body) {
        return new NextResponse('File not found', { status: 404 });
      }

      // Set appropriate content type and cache control
      const contentType = response.ContentType || 'application/octet-stream';
      const headers = new Headers();
      headers.set('Content-Type', contentType);
      headers.set('Cache-Control', 'public, max-age=31536000');

      return new NextResponse(response.Body as any, { headers });
    } catch (error) {
      console.error('Error fetching file from Minio:', error);
      if (error instanceof NoSuchKey) {
        return new NextResponse('File not found', { status: 404 });
      }
      return new NextResponse('Internal Server Error', { status: 500 });
    }
  } catch (error) {
    console.error('Error in image serving:', error);
    return new NextResponse('Internal Server Error', { status: 500 });
  }
}