Parsing url

const http = require('http');
const port = 8000;
const url = require('url');

// const requestHandler = (request, response) => {
//   console.log(request.url);
//   response.end('Hello Node.js Server!');
// };

// const requestHandler = (request, response) => {
//   console.log(request.url);
//   if (request.url === '/') {
//     response.end('Hello Node.js Server!');
//   } else if (request.url === '/about') {
//     response.end('This demonstrates routing with Node.js.');
//   } else {
//     response.end('Default page (URLs other than / and /about)');
//   }
// };

const requestHandler = (request, response) => {
  // The URL we want to parse (= analyze)
  const exampleUrl = request.url;

// Check url.parse's doc for the meaning of parameters
  const parsedUrl = url.parse(exampleUrl, true);

// Show the results
  console.log('Parsed query string:');
  console.log(parsedUrl.query); // { name: 'Jane', city: 'Boston' }

  const {name, city} = parsedUrl.query;

  if (request.url === '/') {
    response.end('Hello Node.js Server!');
  } else if (request.url === '/about') {
    response.end('This demonstrates routing with Node.js.');
  } else if ((name) && (!city)) {
    response.end(`Hello ${name}, from (Please, you do enter a city)`);
  } else if ((city) && (!name)) {
    response.end(`Hello, (Please write your name) from ${city}.`);
  } else if ((name) && (city)) {
    response.end(`Hello, ${name} from ${city}.`);
  } else {
    response.end('Default page (URLs other than / and /about)');
  }

};

const server = http.createServer(requestHandler);

server.listen(port, (err) => {
  if (err) {
    console.error('Something bad happened');
  } else {
    console.log(`server is listening on ${port}`);
  }
});