import { createServer } from "node:http";
import next from "next";
import { Server } from "socket.io";
import {fork} from "node:child_process"

const dev = process.env.NODE_ENV !== "production";
const hostname = "0.0.0.0";
const port = 3000;
// when using middleware `hostname` and `port` must be provided below
const app = next({ dev, hostname, port });
const handler = app.getRequestHandler();

app.prepare().then(() => {
  const httpServer = createServer(handler);

  const io = new Server(httpServer);


  io.on("connection", (socket) => {
    console.log("connected")
    socket.emit("msg","connected")

    io.emit("msg","io.emit");
  });


  



  // socket_global.emit("msg","socket_global")

  httpServer
    .once("error", (err) => {
      console.error(err);
      process.exit(1);
    })
    .listen(port, () => {
      console.log(`> Ready on http://${hostname}:${port}`);
    });


    const   forked = fork("./src/lib/scanner.js")

    forked.on("message", msg => {
      console.log("received",msg)
      io.emit("msg",msg);

    })

    forked.send({ hello: "world" })


});