server.js

const express = require('express');
const app = express();
const server = require('http').Server(app)
const io = require('socket.io')(server)

const { ExpressPeerServer } = require('peer');
const peerServer = ExpressPeerServer(server, {
  debug: true
});

const { v4 : uuidv4 } = require('uuid')


app.set('view engine' , 'ejs');
app.use(express.static('public'));

app.use('/peerjs' , peerServer);

app.get('/' , (req , res ) => { 
    res.redirect(`/${uuidv4()}`);
})



app.get('/:room' , (req , res ) => {
    res.render('room' , {roomID : req.params.room});
})


io.on('connection' , socket => {
    socket.on('join-room' , ( roomID , userId) => {
        console.log('room - joined '); 
        socket.join(roomID);
        socket.to(roomID).broadcast.emit('user-connected' , userId ) ; 
        socket.on('message' , message => {
            io.to(roomID).emit('create-message' , message) ;
        })
    })
})

server.listen(3030);