server.js

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

app.use(express.static('public'));

io.on('connection', (socket) => {
    console.log('A user connected:', socket.id);

    socket.on('join', (role) => {
        socket.join(role);
        console.log(`User ${socket.id} joined as ${role}`);
        socket.broadcast.emit('user-joined', role);
    });

    socket.on('offer', (data) => {
        socket.broadcast.emit('offer', data);
    });

    socket.on('answer', (data) => {
        socket.broadcast.emit('answer', data);
    });

    socket.on('candidate', (data) => {
        socket.broadcast.emit('candidate', data);
    });

    socket.on('disconnect', () => {
        console.log('User disconnected:', socket.id);
    });
});

const PORT = process.env.PORT || 3000;
http.listen(PORT, '0.0.0.0', () => {
    console.log(`Server running at http://localhost:${PORT}`);
});