index.js

const path = require("path");
const express = require("express");
const { createServer } = require("http");
const socketio = require("socket.io");
const session = require("express-session");
require("dotenv").config();

const socketHandler = require("./sockets");

const app = express();
const httpServer = createServer(app);
const io = socketio(httpServer);
const port = process.env.PORT || 3000;

const sessionMiddleware = session({
	secret: process.env.SECRET_KEY,
	saveUninitialized: true,
	resave: false,
});

const connect = (middleware) => {
	return (socket, next) => {
		middleware(socket.request, {}, next);
	};
};

app.use(sessionMiddleware);
app.use(express.static(path.join(__dirname, "public")));
app.set("trust proxy", 1);

io.use(connect(sessionMiddleware));
io.on("connection", socketHandler);

httpServer.listen(port, () => {
	console.log("Server running on port", port);
});