const http = require('http');
const url = require('url');

const server = http.createServer((req, res) => {
  const parsedUrl = url.parse(req.url, true);
  if (parsedUrl.pathname === '/hello') {
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ message: 'Hello!' }));
  } else {
    res.writeHead(404);
    res.end('Not Found');
  }
});

server.listen(3000, () => console.log('Server running on port 3000'));