const http = require('http');

const server = http.createServer((req, res) => {
  const url = req.url;

  if (url === '/') {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.end('Welcome to the Home Page');
  } else if (url === '/about') {
    res.writeHead(200, { 'Content-Type': 'text/html' });
    res.end('<h1>About Us</h1><p>This is the about page.</p>');
  } else if (url === '/data') {
    const jsonData = {
      name: 'Dev',
      course: 'Node.js',
      status: 'Learning'
    };
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify(jsonData));
  } else {
    res.writeHead(404, { 'Content-Type': 'text/plain' });
    res.end('404 Not Found');
  }
});

// Start server on port 3000
server.listen(3000, () => {
  console.log('Server is listening on http://localhost:3000');
});