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

const PORT = 3000;

const MIME_TYPES = {
  '.html': 'text/html',
  '.css': 'text/css',
  '.js': 'text/javascript',
  '.json': 'application/json',
  '.png': 'image/png',
  '.jpg': 'image/jpeg',
  '.wav': 'audio/wav',
  '.mp4': 'video/mp4',
  '.webm': 'video/webm'
};

const server = http.createServer((req, res) => {
  // Decode URL in case of encoded characters
  const decodedUrl = decodeURIComponent(req.url);
  let filePath = path.join(__dirname, decodedUrl === '/' ? 'index.html' : decodedUrl);
  
  const ext = path.extname(filePath).toLowerCase();
  const contentType = MIME_TYPES[ext] || 'application/octet-stream';
  
  fs.readFile(filePath, (err, data) => {
    if (err) {
      if (err.code === 'ENOENT') {
        res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
        res.end('ไม่พบไฟล์ที่ต้องการ (404 Not Found)');
      } else {
        res.writeHead(500, { 'Content-Type': 'text/plain; charset=utf-8' });
        res.end(`ข้อผิดพลาดภายในเซิร์ฟเวอร์: ${err.code}`);
      }
    } else {
      res.writeHead(200, { 'Content-Type': contentType });
      res.end(data);
    }
  });
});

server.listen(PORT, () => {
  console.log(`=========================================`);
  console.log(`🌀 Typhoon Video Transcriber Server Started`);
  console.log(`👉 Open in browser: http://localhost:${PORT}`);
  console.log(`=========================================`);
});