AppsAutoUpdater/lib/Cron/AppsAutoUpdateTask.php

<?php
/**
 * Created by IntelliJ IDEA.
 * User: philippe-adrien
 * Date: 2019-01-20
 * Time: 15:18
 */

namespace OCA\AppsAutoUpdater\Cron;


use OC\BackgroundJob\TimedJob;
use OC\Installer;
use OCP\ILogger;

class AppsAutoUpdateTask extends TimedJob
{
  private $installer;
  private $log;
  private $config;

  /**
   * AppsAutoUpdateTask constructor.
   * @param ILogger|null $log
   * @throws \OCP\AppFramework\QueryException
   */
  public function __construct(ILogger $log = null)
  {
    $this->setInterval(15 * 60);
    $this->log = $log;
    $this->config =\OC::$server->getConfig();
    $this->installer = \OC::$server->query(Installer::class);
  }

  protected function run($argument)
  {
    $ocApp = new \OC_App();
    $apps = $ocApp->listAllApps();

    foreach($apps as $app) {
      if(!$app["active"]) continue;
      $appId = $app["id"];
      try {
        if ($this->installer->isUpdateAvailable($appId)) {
          $this->config->setSystemValue('maintenance', true);
          $this->installer->updateAppstoreApp($appId);
          $this->config->setSystemValue('maintenance', false);
        }
      } catch (\Exception $ex) {
        $this->log->logException($ex, ['app' => 'appsautoupdate']);
        $this->config->setSystemValue('maintenance', false);
      }
    }
  }
}