const express = require("express");
const app = express();
const http = require("http");
const server = http.createServer(app);

const { Server } = require("socket.io");
const io = new Server(server, {
  cors: {
    origin: "http://192.168.0.131:3000", // Replace with the origin of your client application
    methods: ["GET", "POST", "WS"], // Allowed HTTP methods  
}
});

app.get("/", (req, res) => {
  //   res.sendFile(__dirname + "/index.html");
  res.send(`Upgrade`);
});

io.on("connection", (socket) => {
  console.log("A user connected");

  // Handle custom events from the client
  socket.on("chat message", (msg) => {
    io.emit("chat message", msg); // Emit the message to all connected clients
  });

  // Handle disconnections
  socket.on("disconnect", () => {
    console.log("User disconnected");
  });
});

server.listen(4000, () => {
  console.log("Listening on port 4000");
});