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

// Create an HTTP server with routing
const server = http.createServer((req, res) => {
  // Parse the URL
  const parsedUrl = url.parse(req.url, true);
  const path = parsedUrl.pathname;
  const trimmedPath = path.replace(/^\/+|\/+$/g, '');
  
  // Get the HTTP method
  const method = req.method.toLowerCase();
  
  // Get query parameters
  const queryParams = parsedUrl.query;
  
  // Log the request
  console.log(`Request received: ${method} ${trimmedPath}`);
  
  // Route handler
  let response = {
    status: 404,
    contentType: 'application/json',
    payload: { message: 'Not Found' }
  };
  
  // Basic routing
  if (method === 'get') {
    if (trimmedPath === '') {
      // Home route
      response = {
        status: 200,
        contentType: 'text/html',
        payload: '
Home Page
Welcome to the server
'
      };
    } else if (trimmedPath === 'api/users') {
      // API route - list users
      response = {
        status: 200,
        contentType: 'application/json',
        payload: {
          users: [
            { id: 1, name: 'John' },
            { id: 2, name: 'Jane' }
          ]
        }
      };
    } else if (trimmedPath.startsWith('api/users/')) {
      // API route - get user by ID
      const userId = trimmedPath.split('/')[2];
      response = {
        status: 200,
        contentType: 'application/json',
        payload: { id: userId, name: `User ${userId}` }
      };
    }
  }
  
  // Return the response
  res.setHeader('Content-Type', response.contentType);
  res.writeHead(response.status);
  
  // Convert payload to string if it's an object
  const payloadString = typeof response.payload === 'object'
    ? JSON.stringify(response.payload)
    : response.payload;
  
  res.end(payloadString);
});

// Start the server
const PORT = 8080;
server.listen(PORT, () => {
  console.log(`Server running at http://localhost:${PORT}/`);
});