main.js

const electron = require('electron')
const program = require('commander');

// parse command line parameters
program
	.version('1.0.0')
	.option('-s, --serverport [port]', 'web server listening port (defaults to 8280)')
	.option('-h, --serverhost [host]', 'web server listening host (defaults to all ip addresses)')
	.option('-l, --lndhost [host:port]', 'RPC lnd host (defaults to localhost:10009)')
	.option('-t, --usetls [path]', 'path to a directory containing key.pem and cert.pem files')
	.option('-u, --user [login]', 'basic authentication login')
	.option('-p, --pwd [password]', 'basic authentication password')
	.option('-r, --limituser [login]', 'basic authentication login for readonly account')
	.option('-w, --limitpwd [password]', 'basic authentication password for readonly account')
	.option('-f, --logfile [file path]', 'path to file where to store the application logs')
	.option('-e, --loglevel [level]', 'level of logs to display (debug, info, warn, error)')
	.option('-n, --lndlogfile <file path>', 'path to lnd log file to send to browser')
	.parse(process.argv);

// First start the back-end server
const server = require('./app/server')(program)

const serverRootPath = (server.useTLS ? "https" : "http") + "://" + server.serverHost + ":" + server.serverPort;

// Module to control application life.
const app = electron.app
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow

const path = require('path')
const url = require('url')

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow

function createWindow () {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: false,
      preload: path.join(__dirname, 'preload.js')
    }
  })
  
  mainWindow.webContents.setUserAgent(serverRootPath);

  // and load the index.html of the app.
  mainWindow.loadURL(url.format({
    pathname: path.join(__dirname, 'public/index.html'),
    protocol: 'file:',
    slashes: true
  }))

  // Open the DevTools.
  //mainWindow.webContents.openDevTools()

  // Emitted when the window is closed.
  mainWindow.on('closed', function () {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    mainWindow = null
  })
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', function () {
  // On OS X it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', function () {
  // On OS X it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (mainWindow === null) {
    createWindow()
  }
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.