custom/plugins/WbmTagManagerEcomm/src/Subscriber/KernelEventsSubscriber.php line 47

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  1. <?php declare(strict_types=1);
  3. namespace Wbm\TagManagerEcomm\Subscriber;
  5. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  6. use Symfony\Component\HttpFoundation\Cookie;
  7. use Symfony\Component\HttpKernel\Event\ControllerEvent;
  8. use Symfony\Component\HttpKernel\Event\ResponseEvent;
  9. use Symfony\Component\HttpKernel\KernelEvents;
  10. use Wbm\TagManagerEcomm\Services\DataLayerModulesInterface;
  11. use Wbm\TagManagerEcomm\Services\DataLayerRendererInterface;
  13. class KernelEventsSubscriber implements EventSubscriberInterface
  14. {
  15.     const COOKIE_NAME = '_gtm_push';
  17.     /**
  18.      * @var DataLayerModulesInterface
  19.      */
  20.     private $modules;
  22.     /**
  23.      * @var DataLayerRendererInterface
  24.      */
  25.     private $dataLayerRenderer;
  27.     public function __construct(
  28.         DataLayerModulesInterface $modules,
  29.         DataLayerRendererInterface $dataLayerRender
  30.     ) {
  31.         $this->modules = $modules;
  32.         $this->dataLayerRenderer = $dataLayerRender;
  33.     }
  35.     public static function getSubscribedEvents(): array
  36.     {
  37.         return [
  38.             KernelEvents::CONTROLLER => [
  39.                 ['getDataLayerForXmlHttpRequest'],
  40.             ],
  41.             KernelEvents::RESPONSE => [
  42.                 ['prependDataLayerToResponse'],
  43.             ],
  44.         ];
  45.     }
  47.     public function getDataLayerForXmlHttpRequest(ControllerEvent $event): void
  48.     {
  49.         $salesChannelId = $event->getRequest()->get('sw-sales-channel-id');
  50.         $isActive = !empty($this->modules->getContainerId($salesChannelId)) && $this->modules->isActive($salesChannelId);
  52.         if ($isActive && !$event->getRequest()->cookies->get(self::COOKIE_NAME)) {
  53.             $modules = $this->modules->getModules();
  54.             $route = $event->getRequest()->attributes->get('_route');
  56.             if (array_key_exists($route, $modules) && !empty($modules[$route])) {
  57.                 $this->dataLayerRenderer->setVariables($route, [])
  58.                     ->renderDataLayer($route);
  59.             }
  60.         }
  61.     }
  63.     public function prependDataLayerToResponse(ResponseEvent $event): void
  64.     {
  65.         $response = $event->getResponse();
  66.         $request = $event->getRequest();
  67.         $cookie = $request->cookies->get(self::COOKIE_NAME);
  68.         $response->headers->clearCookie(self::COOKIE_NAME);
  70.         $route = $event->getRequest()->attributes->get('_route');
  71.         $dataLayer = $this->dataLayerRenderer->getDataLayer($route);
  72.         if ($dataLayer !== null) {
  73.             $dataLayer = json_encode($dataLayer);
  74.         }
  76.         if (!empty($dataLayer) && $response->isRedirect()) {
  77.             $response->headers->setCookie(
  78.                 new Cookie(
  79.                     self::COOKIE_NAME,
  80.                     $dataLayer,
  81.                     0,
  82.                     '/',
  83.                     null,
  84.                     $request->isSecure(),
  85.                     true,
  86.                     false,
  87.                     Cookie::SAMESITE_LAX
  88.                 )
  89.             );
  91.             return;
  92.         }
  94.         if (!$request->isXmlHttpRequest()) {
  95.             return;
  96.         }
  98.         if ($cookie && in_array($route, $this->modules->getResponseRoutes(), true)) {
  99.             $dataLayer = $cookie;
  100.         }
  102.         if (empty($dataLayer)) {
  103.             return;
  104.         }
  106.         $response->headers->set(
  107.             'Access-Control-Allow-Headers',
  108.             $response->headers->get('Access-Control-Allow-Headers') . ',gtm-push'
  109.         );
  110.         $response->headers->set('gtm-push', $dataLayer);
  112.         $event->setResponse($response);
  113.     }
  114. }