server.js

import express from "express";
import http from "http";
import cors from "cors"
import { Server } from 'socket.io';
import path from "path";
import { fileURLToPath } from 'url';
import { formatMessage } from "./utils/message.js";
import { userJoin, getCurrentUser, userLeave, getRoomUsers } from "./utils/users.js";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

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

const botName = "PixelBot";

// Serve static files from the 'public' directory
app.use(express.static(path.join(__dirname, 'public')));

app.use(cors());
app.use((req, res, next) => {
  res.setHeader("X-Frame-Options", "ALLOWALL");
  next();
});

// Run when a client connects
io.on('connection', socket => {
    socket.on("joinRoom", ({ username, room }) => {
        const user = userJoin(socket.id, username, room);
        socket.join(user.room);

        // Welcome the current user
        socket.emit('message', formatMessage(botName, 'Welcome To JustChat!'));

        // Broadcast when a user connects
        socket.broadcast.to(user.room).emit('message', formatMessage(botName, `${user.username} has joined the chat`));

        // Send user's and room info
        io.to(user.room).emit('roomUsers', {
            room: user.room,
            users: getRoomUsers(user.room)
        });
    });

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

    // Runs when a 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`));

            // Send user's and room info
            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 is running on ${PORT}`);
});