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

const app = express();
const PORT = 3000;
const DIRECTORY = path.join(__dirname, 'tables'); // Change to your directory

app.get('/', (req, res) => {
  fs.readdir(DIRECTORY, (err, files) => {
    if (err) return res.status(500).send('Error reading directory');
    let html = '<h1>File Index</h1><ul>';
    files.forEach(file => {
      html += `<li><a href="/file/${encodeURIComponent(file)}">${file}</a></li>`;
    });
    html += '</ul>';
    res.send(html);
  });
});

app.get('/file/:filename', (req, res) => {
  const filename = req.params.filename;
  const filepath = path.join(DIRECTORY, filename);
  fs.readFile(filepath, 'utf8', (err, data) => {
    if (err) return res.status(404).send('File not found');
    res.send(`<h1>${filename}</h1><pre>${escapeHtml(data)}</pre><a href="/">Back</a>`);
  });
});

function escapeHtml(text) {
  return text.replace(/[&<>"']/g, function(m) {
    return ({
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#39;'
    })[m];
  });
}

app.listen(PORT, () => {
  console.log(`Server running at http://localhost:${PORT}`);
});