Craze-Data-check/api/dropbox-proxy.js

const DROPBOX_ACCESS_TOKEN = process.env.DROPBOX_ACCESS_TOKEN;

export default async function handler(req, res) {
  if (!DROPBOX_ACCESS_TOKEN) {
    return res.status(500).json({ error: 'DROPBOX_ACCESS_TOKEN not configured' });
  }

  if (req.method === 'GET' && req.query.info === '1') {
    try {
      const fileInfo = await fetch('https://api.dropboxapi.com/2/files/get_metadata', {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${DROPBOX_ACCESS_TOKEN}`,
          'Content-Type': 'application/json'
        },
        body: JSON.stringify({ path: '/Data-Matrix.xlsx' })
      });
      const data = await fileInfo.json();
      return res.json({
        rev: data.rev,
        size: data.size,
        server_modified: data.server_modified
      });
    } catch (err) {
      return res.status(500).json({ error: err.message });
    }
  }

  try {
    const upstream = await fetch('https://content.dropboxapi.com/2/files/download', {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${DROPBOX_ACCESS_TOKEN}`,
        'Dropbox-API-Arg': JSON.stringify({ path: '/Data-Matrix.xlsx' })
      }
    });

    if (!upstream.ok) {
      const errText = await upstream.text();
      console.error('Dropbox API error:', upstream.status, errText);
      return res.status(upstream.status).send('Dropbox error: ' + errText);
    }

    const buffer = await upstream.arrayBuffer();

    res.setHeader('Content-Type', 'application/octet-stream');
    res.setHeader('Cache-Control', 'no-store');
    res.send(Buffer.from(buffer));
  } catch (err) {
    console.error('Dropbox proxy error:', err);
    res.status(500).send('Proxy error: ' + err.message);
  }
}