import type { NextApiRequest, NextApiResponse } from 'next';
import fs from 'fs';
import path from 'path';
import { getServerConfig } from '../../../../lib/serverConfig';

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
  const { name } = req.query;
  if (typeof name !== 'string') {
    return res.status(400).send('Invalid file name');
  }

  try {
    const baseDir = path.join(process.cwd(), getServerConfig().uploadDir);
    const filePath = path.join(baseDir, name);
    if (!fs.existsSync(filePath)) {
      return res.status(404).send('File not found');
    }
    const ext = path.extname(filePath).toLowerCase();
    const type = ext === '.zip' ? 'application/zip'
      : ext === '.mp4' ? 'video/mp4'
      : ext === '.webm' ? 'video/webm'
      : ext === '.mov' ? 'video/quicktime'
      : 'application/octet-stream';
    res.setHeader('Content-Type', type);
    const stream = fs.createReadStream(filePath);
    stream.pipe(res);
  } catch (e) {
    res.status(500).send('Internal error');
  }
}