FINAL-PROJECT-BACK-SOCKET/app.js

const express = require('express');
const app = express();
const http = require('http');
const { Server } = require('socket.io');
const cors = require('cors');
const logger = require('morgan');
const helmet = require('helmet');
const formatsLogger = app.get('env') === 'development' ? 'dev' : 'short';

app.use(helmet());
app.use(logger(formatsLogger));
app.use(cors());

const server = http.createServer(app);

const io = new Server(server, {
	cors: {
		origin: '*',
		methods: ['GET', 'POST'],
	},
});

io.on('connection', (socket) => {
	console.log(`User Connected: ${socket.id}`);

	socket.on('join_room', (data) => {
		socket.join(data);
	});

	socket.on('send_message', (data) => {
		socket.to(data.room).emit('receive_message', data);
	});
});

module.exports = server;