const fs = require('fs');
const path = require('path');

function registerUploadRoutes(app, deps) {
  app.post('/api/upload/video', deps.upload.single('video'), (req, res) => {
    try {
      if (!req.file) {
        return res.status(400).json({ error: '未收到视频文件' });
      }

      const file = req.file;
      const filename = file.filename;
      const ext = path.extname(filename).replace('.', '').toLowerCase();
      const videoId = `VID-${Date.now()}`;
      const fileStat = fs.statSync(file.path);

      const videoEntry = {
        id: videoId,
        title: req.body.title || path.basename(filename, path.extname(filename)),
        filename,
        size: fileStat.size,
        duration: 0,
        category: 'uploaded',
        tags: req.body.tags ? JSON.parse(req.body.tags) : [],
        description: req.body.description || '用户上传的视频',
        source: 'uploaded',
        metadata: {
          resolution: '未知',
          format: ext || 'mp4',
        },
      };

      const manifest = deps.readManifest();
      manifest.push(videoEntry);
      deps.writeManifest(manifest);

      console.log(`📤 视频上传成功: ${filename} (${(fileStat.size / 1024 / 1024).toFixed(1)}MB) → ${videoId}`);

      res.json({
        success: true,
        video: videoEntry,
        filepath: `/backend/video/${filename}`,
      });
    } catch (err) {
      console.error('❌ 视频上传失败:', err.message);
      res.status(500).json({ error: `上传失败: ${err.message}` });
    }
  });
}

module.exports = { registerUploadRoutes };