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

// Port can be specified as command line argument or default to 8080
const port = process.argv[2] || 8080;

// MIME types for different file extensions
const mimeTypes = {
  '.html': 'text/html',
  '.css': 'text/css',
  '.js': 'text/javascript',
  '.json': 'application/json',
  '.png': 'image/png',
  '.jpg': 'image/jpeg',
  '.svg': 'image/svg+xml',
  '.ico': 'image/x-icon'
};

// Create a simple HTTP server
const server = http.createServer((req, res) => {
  console.log(`${new Date().toISOString()} - ${req.method} ${req.url}`);
  
  // Handle root path
  let filePath = req.url === '/' 
    ? path.join(__dirname, 'index.html')
    : path.join(__dirname, req.url);
  
  // Get the file extension
  const extname = path.extname(filePath);
  
  // Default content type
  let contentType = mimeTypes[extname] || 'application/octet-stream';
  
  // Read file and serve content
  fs.readFile(filePath, (error, content) => {
    if (error) {
      if (error.code === 'ENOENT') {
        // File not found
        res.writeHead(404);
        res.end('404 - File Not Found');
      } else {
        // Server error
        res.writeHead(500);
        res.end(`Server Error: ${error.code}`);
      }
    } else {
      // Successful response
      res.writeHead(200, { 'Content-Type': contentType });
      res.end(content, 'utf-8');
    }
  });
});

// Start the server
server.listen(port, () => {
  console.log(`Server running at http://localhost:${port}/`);
  console.log(`Press Ctrl+C to stop the server`);
});