server.js

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

const app = express();

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

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

const botName = "BERKAY DURSUN ~ BOT";

//Run when client connects
io.on('connection', socket => {

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

        socket.join(user.room);

        //Welcome Current User
        socket.emit('message', formatMessage(botName, 'Welcome to ChatCord!'));

        //Broadcast when a user connects
        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)
        });

    });

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

    //Runs when client disconnects
    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 = 3000 || process.env.PORT;

server.listen(PORT, () => console.log('Server running on port ', PORT));