server.js

const express = require('express');
const path = require('path');
const http = require('http');
const socketio = require('socket.io');
const formatMessage = require('./utils/messages');
const { userJoin, getCurrentUser, userLeave, getRoomUsers } = require('./utils/users');

const app = express();
const server = http.createServer(app);
const io = socketio(server);

app.use(express.static(path.join(__dirname, 'public')));

const botname = 'Chatcord Bot'; 

io.on('connection', socket =>
{
    socket.on('joinRoom', ({ username, room }) =>
    {
        const user = userJoin(socket.id, username, room);
        socket.join(user.room);

        socket.emit('message', formatMessage(botname, 'Welcome to chatcord!'));

        socket.broadcast.to(user.room).emit('message', formatMessage(botname, `${user.username} has joined the chat`));

        io.to(user.room).emit('roomUsers', {
            room: user.room,
            users: getRoomUsers(user.room)
        });
    });
    // console.log("New Connection");

    socket.on('chatMessage', msg =>
    {
        // console.log(msg);
        const user = getCurrentUser(socket.id);
        io.to(user.room).emit('message', formatMessage(user.username, msg));
    });


    socket.on('disconnect', () => {
        const user = userLeave(socket.id);

        if(user)
        {
            io.to(user.room).emit('message', formatMessage(botname, `${user.username} has left the chat`));
        }
        io.to(user.room).emit('roomUsers', {
            room: user.room,
            users: getRoomUsers(user.room)
        }); 
    });

});

const PORT = process.env.PORT || 3000;

server.listen(PORT, ()=> console.log(`Server running on PORT ${PORT}`));