main.js

import express from "express";
import bodyParser from "body-parser";
import cors from "cors";
import dotenv from "dotenv";
import morgan from "morgan";
import { Server } from "socket.io";
import { createServer } from "http";
import path from "path";
import { fileURLToPath } from "url";

const app = express();
const server = createServer(app);
const io = new Server(server);
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

dotenv.config();
app.set("view engine", "ejs");

app.use(express.json());
app.use(express.static(path.join(__dirname, "/public")));
app.use(morgan("common"));
app.use(bodyParser.json({ limit: "30mb", extended: true }));
app.use(bodyParser.urlencoded({ limit: "30mb", extended: true }));
app.use(cors());

io.on("connection", (socket) => {
    socket.on("send-location", (data) => {
        io.emit("receive-location", { id: socket.id, ...data });
    });

    socket.on("disconnect", () => {
        io.emit("user-disconnected", socket.id);
    });
    console.log("connected", socket.id);
});

app.get("/", (req, res) => {
    res.render("index");
});

const PORT = process.env.PORT || 3000;
server.listen(PORT, () => console.log(`Server Port: ${PORT}`));