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<?php declare(strict_types=1);
namespace Wbm\TagManagerAnalytics\Subscriber;
use Shopware\Core\Framework\Context;
use Shopware\Core\Framework\Routing\KernelListenerPriorities;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\HttpKernel\Event\ControllerEvent;
use Symfony\Component\HttpKernel\Event\ResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Wbm\TagManagerAnalytics\Services\DataLayerModulesInterface;
use Wbm\TagManagerAnalytics\Services\DataLayerRendererInterface;
use Wbm\TagManagerAnalytics\Utility\SessionUtility;
class KernelEventsSubscriber implements EventSubscriberInterface
{
/**
* @var DataLayerModulesInterface
*/
private $modules;
/**
* @var DataLayerRendererInterface
*/
private $dataLayerRenderer;
/**
* @var SessionInterface
*/
private $session;
public function __construct(
DataLayerModulesInterface $modules,
DataLayerRendererInterface $dataLayerRender,
SessionInterface $session
) {
$this->modules = $modules;
$this->dataLayerRenderer = $dataLayerRender;
$this->session = $session;
}
public static function getSubscribedEvents(): array
{
return [
KernelEvents::CONTROLLER => [
['getDataLayerForXmlHttpRequest', KernelListenerPriorities::KERNEL_CONTROLLER_EVENT_SCOPE_VALIDATE_POST],
],
KernelEvents::RESPONSE => [
['prependDataLayerToResponse', -1],
],
];
}
public function getDataLayerForXmlHttpRequest(ControllerEvent $event): void
{
$request = $event->getRequest();
if (!$this->isStorefrontRequest($request)) {
return;
}
$modules = $this->modules->getModules();
$route = $request->attributes->get('_route');
if (!array_key_exists($route, $modules)
|| empty($modules[$route])
|| $this->session->has(SessionUtility::ATTRIBUTE_NAME)
) {
return;
}
$salesChannelId = $request->get('sw-sales-channel-id');
$isActive = !empty($this->modules->getContainerId($salesChannelId)) && $this->modules->isActive($salesChannelId);
if (!$isActive) {
return;
}
$this->dataLayerRenderer->setVariables($route, [])->renderDataLayer($route);
}
public function prependDataLayerToResponse(ResponseEvent $event): void
{
$response = $event->getResponse();
$request = $event->getRequest();
if (!$this->isStorefrontRequest($request)) {
return;
}
$route = $request->attributes->get('_route');
$dataLayer = $this->dataLayerRenderer->getDataLayer($route);
if ($dataLayer !== null) {
$dataLayer = SessionUtility::injectSessionVars($dataLayer, $this->session);
$dataLayer = json_encode($dataLayer);
}
if (!empty($dataLayer) && $response->isRedirect()) {
$this->session->set(SessionUtility::ATTRIBUTE_NAME, $dataLayer);
return;
}
if (!$request->isXmlHttpRequest()) {
return;
}
$storedDatalayer = $this->session->get(SessionUtility::ATTRIBUTE_NAME);
$this->session->remove(SessionUtility::ATTRIBUTE_NAME);
if ($storedDatalayer && in_array($route, $this->modules->getResponseRoutes(), true)) {
$dataLayer = $storedDatalayer;
}
if (empty($dataLayer)) {
return;
}
$dataLayerScriptTag = sprintf(
'<script id="wbm-data-layer">%s</script>',
$dataLayer
);
$content = $dataLayerScriptTag . PHP_EOL . $response->getContent();
$response->setContent($content);
$event->setResponse($response);
}
private function isStorefrontRequest(Request $request)
{
if ($request->attributes->has('sw-context')
&& $request->attributes->get('sw-context') instanceof Context
&& $request->attributes->get('sw-context')->getScope() === 'user'
) {
return true;
}
return false;
}
}

custom/plugins/WbmTagManagerAnalytics/src/Subscriber/KernelEventsSubscriber.php line 56