server.js

// Agar.io Clone Server
const path = require("path");
const express = require("express");
const http = require("http");
const { Server } = require("socket.io");

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

const app = express();
app.use(express.json());
// Serve static frontend in production from the public folder
app.use(express.static(path.join(__dirname, "public")));

app.get(/.*/, (req, res) => {
  res.sendFile(path.join(__dirname, "public", "index.html"));
});
const server = http.createServer(app);
const io = new Server(server, {
  cors: { origin: "*" },
});

// WebSocket handlers
io.on("connection", (socket) => {
  const id = socket.id;

  socket.on("disconnect", () => {
    console.log(`Player disconnected: ${id}`);
  });
});

server.listen(PORT, () => {
  console.log(`Server listening on http://localhost:${PORT}`);
});

module.exports = { io, app };