server.js

const express = require('express')

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

const {v4: uuidV4 } = require('uuid')
app.set('view engine', 'ejs')
app.use(express.static('public'))
app.use(express.json());

app.unsubscribe(express.static('public'))

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(roomId, userId)
        socket.join(roomId)
        socket.broadcast.to(roomId).emit('user-connected', userId)
  
        socket.on('disconnect', ()=>{
            socket.broadcast.to(roomId).emit('user-disconnected', userId)
        })
    })
})
server.listen(3000)