Node Server Tutorial

node-server-tutorial.js

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

const server = http.createServer();

let messages = [
  { 'id': 1, 'user': 'user 1', 'message': 'generic message' },
  { 'id': 2, 'user': 'user 2', 'message': 'another generic message' },
  { 'id': 3, 'user': 'user 3', 'message': 'and a third!' }
];

addMessage = (newMessage, response) => {
  response.writeHead(201, { 'Content-Type': 'text/plain' });
  response.write(JSON.stringify(newMessage));
  response.end(JSON.stringify(newMessage));
};

getAllMessages = response => {
  response.writeHead(200, { 'Content-Type': 'application/json' });
  response.end(JSON.stringify(messages));
};

server.listen(3000, () => {
  console.log('The HTTP server is listening at Port 3000.');
});

server.on('request', (request, response) => {
  response.writeHead(200, { 'Content-Type': 'text/plain' });
  response.write('Hello World\n');
  response.end();
});

server.on('request', (request, response) => {
  if (request.method === 'GET') {
    getAllMessages(response);
  }

  else if (request.method === 'POST') {
    let newMessage = { 'id': new Date() };

    request.on('data', (data) => {
      newMessage = Object.assign(newMessage, JSON.parse(data));
    });

    request.on('end', () => {
      addMessage(newMessage, response);
    });
  }
});