server.js

const express = require('express');
const app = express();
const server = require('http').Server(app);
const {v4:uuidv4} = require('uuid');
const io = require('socket.io')(server);
const {ExpressPeerServer} = require('peer');

const peerServer = ExpressPeerServer(server,{
    debug: true
})

const PORT = process.env.PORT || 3030

app.use('/peerjs',peerServer)
app.set('view engine','ejs')
app.use(express.static('public'))

app.get('/',(req,res)=>{
    res.render('home',{roomId:uuidv4()})
    // 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)=>{
        socket.join(roomId)
        socket.broadcast.to(roomId).emit('user-connected',userId)
        socket.on('message',message=>{
            io.to(roomId).emit('create_message',message)
        })
    })
})

server.listen(PORT)