interface Env {
  R2_BUCKET: R2Bucket;
}

export async function onRequest(context: { env: Env; request: Request }) {
  const url = new URL(context.request.url);

  if (url.pathname === '/api/fs/list' && context.request.method === 'POST') {
    try {
      const files: any[] = [];
      let cursor: string | undefined;

      do {
        const listing = await context.env.R2_BUCKET.list({
          cursor: cursor,
          limit: 1000
        });

        for (const obj of listing.objects) {
          if (obj.key.endsWith('.mp4') && !obj.key.includes('/')) {
            const nameWithoutExt = obj.key.replace('.mp4', '');
            files.push({
              name: obj.key,
              size: obj.size,
              modified: obj.lastModified,
              thumb: `https://pub-7d4a6640bc77480c99842eea19bb2b69.r2.dev/thumbs/${nameWithoutExt}.jpg`
            });
          }
        }

        cursor = listing.cursor;
      } while (cursor);

      const response = {
        code: 200,
        message: "success",
        data: {
          content: files.map((f, i) => ({
            id: `r2_${i}`,
            path: "",
            name: f.name,
            size: f.size,
            is_dir: false,
            modified: f.modified,
            created: f.modified,
            sign: "",
            thumb: f.thumb,
            type: 2,
            hashinfo: "null",
            hash_info: null
          })),
          total: files.length,
          readme: "",
          header: "",
          write: false,
          provider: "r2"
        }
      };

      return new Response(JSON.stringify(response), {
        headers: { 'Content-Type': 'application/json' }
      });
    } catch (e) {
      return new Response(JSON.stringify({ error: e.message }), {
        status: 500,
        headers: { 'Content-Type': 'application/json' }
      });
    }
  }

  return new Response('Not Found', { status: 404 });
}