index.js

const { app, Tray } = require('electron')
const express = require('express')
const main = express()
const http = require('http')
const server = http.createServer(main)
const { Server } = require("socket.io")
const cp = require('node:child_process')
const updateWorker = cp.fork(`${__dirname}/update.js`)
const aggregateWorker = cp.fork(`${__dirname}/aggregator.js`)
const io = new Server(server, {
  cors: {
    origin: "*",
    methods: ["GET", "POST"]
  }
})
let port = process.env.PORT || 3000


var jsonData = {
  "CPU":
    {
      "temp": "00",
      "load": "00",
      "clk": "00"
    },
  "OS":
    {
      "user": "",
      "uptime": "00:00:00",
      "cpumodel": "",
      "cpuclk": "",
      "cpuvendor": ""
    },
  "GPU": 
    {
      "vendor": "",
      "model": "",
      "class": "",
      "temp": "00",
      "load": "00",
      "clk": "00"
    }
  ,
  "RAM": 
    {
      "used": "",
      "total": "",
      "clk": "00"
    },
  "HDD": [],
  "IO": [{
    "read": "",
    "write": ""
  },
  {
    "read": "",
    "write": ""
  }
],
  "NET": 
    {
      "iface": "name",
      "rx_bytes": 0,
      "tx_bytes": 0,
      "rx_sec": 0,
      "tx_sec": 0,
      "ms": 0
    }
}
jsonData.date = 0
jsonData.firstrun = true
let tray = null
app.once('ready', () => {
  // Create a new tray
  tray = new Tray(`${__dirname}/img/icon.png`)
  tray.on('double-click', function (event) {
    tray.destroy()
    tray = null
    updateWorker.kill()
    aggregateWorker.kill()
    app.quit()
    process.exit(1)
  })
  updateWorker.send(jsonData)
})

let r = {}
io.on('connection', (socket) => {
  socket.on('update', () => {
    updateWorker.send(jsonData)
    socket.emit('sysinfo', jsonData)
  })
  aggregateWorker.on('message', data => {
    jsonData = data
  })
})
updateWorker.on('message', thedata => {
  r = {'prev': jsonData, 'data': thedata}
  aggregateWorker.send(r)
})
server.listen(port)