var http = require('http');
var fs = require('fs');
var express = require('express');
var app = express();
var path = require('path');
var server = http.createServer(app);
var port = 8000;
var osc = require('osc');
var activeUsers = new Set(); // Active users Set

var udpPort = new osc.UDPPort({
  // This is the port we're listening on.
  localAddress: "0.0.0.0",
  localPort: 57121,

  // This is where sclang is listening for OSC messages.
  remoteAddress: "192.168.2.151", //this is the hamsters ip
  remotePort: 8080, //this is the hamsters port :*s
  metadata: true
});

// Open the socket.
udpPort.open();

const { SerialPort } = require('serialport')
const { ReadlineParser } = require('@serialport/parser-readline')
const sport = new SerialPort({ path: '/dev/ttyACM0', baudRate: 115200 })

const parser = sport.pipe(new ReadlineParser({ delimiter: '\r\n' }))

server.listen(port, () => {
  console.log("Server is listening at port %d", port);
});

app.use(express.static(path.join(__dirname, "public")));

var io = require('socket.io')(server);

io.on('connection', function(socket) {
  console.log("new user online!");

  // Add the new socket ID to the activeUsers Set
  activeUsers.add(socket.id);

  // Emit the updated activeUsers Set to all connected clients
  io.emit('activeUsers', Array.from(activeUsers));

  parser.on('data', function(data) {
    const msg = data.split(' ');
    console.log(msg[0], msg[1]);
    io.emit('node-data', data);
  });

  socket.on("blink", () => {
    console.log("Blink event received!");
    io.emit("blink"); // Emit the "blink" event to all connected clients
  });

  socket.on('chat message', (msg) => {
    console.log('[user][' + socket.id + '][' + msg + ']');
    socket.broadcast.emit('chat message', msg);

    var oscmsg = {
      address: "/silentserver",
      args: [
           {
               type: "s",
               value: socket.id
           },
          {
              type: "s",
              value: msg
          }
        ]
    };

    udpPort.send(oscmsg);
  });

  socket.on('userposition', (msg) => {
    console.log('[user][' + socket.id + '][position: ' + msg[0] + ',' + msg[1] + ']');
    socket.to('expo').emit(socket.id, msg);
  });

  // Handle disconnection event
  socket.on('disconnect', () => {
    console.log("new user online:", socket.id);

    // Remove the disconnected socket ID from the activeUsers Set
    activeUsers.delete(socket.id);

    // Emit the updated activeUsers Set to all connected clients
    io.emit('activeUsers', Array.from(activeUsers));
  });
});