Easy Admin Controller Extension with Google Analytics Dashboard

AdminDashboardController.php

<?php
namespace App\Controller;

use Symfony\Component\HttpFoundation\Request;
use EasyCorp\Bundle\EasyAdminBundle\Controller\AdminController;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Google_Client;
use Google_Service_AnalyticsReporting;

class AdminDashboardController extends AdminController
{
    /**
     * @Route("/dashboard", name="admin_dashboard")
     * @param Request $request
     * @return \Symfony\Component\HttpFoundation\Response
     * @throws \Google_Exception
     */
    public function dashboardAction(Request $request)
    {

        // Create the Google API Client and authorize it to retrieve
        // analytics for the dashboard page.
        $client = new Google_Client();
        $KEY_FILE_LOCATION = $this->getParameter('kernel.project_dir') . '/XXXXX-YOUR-AUTH-FILE-XXXXX.json';
        $client->setAuthConfig($KEY_FILE_LOCATION);
        $client->addScope(\Google_Service_AnalyticsReporting::ANALYTICS_READONLY);
        $tokenArray = $client->fetchAccessTokenWithAssertion();

        return $this->render('easy_admin/dashboard.html.twig', array(
            "google_token" => $tokenArray['access_token']
        ));

    }
}