Handle squirrel events for Windows installer

 //handle setupevents as quickly as possible

 const setupEvents = require('./installers/setupEvents')

 if (setupEvents.handleSquirrelEvent()) {

    // squirrel event handled and app will exit in 1000ms, so don't do anything else

    return;

 }

const electron = require('electron')

const contextMenu = require('electron-context-menu');

const path = require('path')

const electron = require('electron')

const app = electron.app

module.exports = {

  handleSquirrelEvent: function () {

    if (process.argv.length === 1) {

      return false;

    }

    const ChildProcess = require('child_process');

    const path = require('path');

    const appFolder = path.resolve(process.execPath, '..');

    const rootAtomFolder = path.resolve(appFolder, '..');

    const updateDotExe = path.resolve(path.join(rootAtomFolder, 'Update.exe'));

    const exeName = path.basename(process.execPath);

    const spawn = function (command, args) {

      let spawnedProcess, error;

      try {

        spawnedProcess = ChildProcess.spawn(command, args, {

          detached: true

        });

      } catch (error) {}

      return spawnedProcess;

    };

    const spawnUpdate = function (args) {

      return spawn(updateDotExe, args);

    };

    const squirrelEvent = process.argv[1];

    switch (squirrelEvent) {

      case '--squirrel-install':

      case '--squirrel-updated':

        // Optionally do things such as:

        // - Add your .exe to the PATH

        // - Write to the registry for things like file associations and

        // explorer context menus

        // Install desktop and start menu shortcuts

        spawnUpdate(['--createShortcut', exeName]);

        setTimeout(app.quit, 1000);

        return true;

      case '--squirrel-uninstall':

        // Undo anything you did in the --squirrel-install and

        // --squirrel-updated handlers

        // Remove desktop and start menu shortcuts

        spawnUpdate(['--removeShortcut', exeName]);

        setTimeout(app.quit, 1000);

        return true;

      case '--squirrel-obsolete':

        // This is called on the outgoing version of your app before

        // we update to the new version - it's the opposite of

        // --squirrel-updated

        app.quit();

        return true;

    }

  }

}

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