feat: basic themes for event sites

src/Twig/AppRuntime.php

@@ -6,8 +6,10 @@ use App\BusProNet\DataProvider\CountryDataProvider;
 use App\Form\Model\BookingDto;
 use App\Form\Service\CreateFieldStateProvider;
 use App\Form\Service\EditFieldStateProvider;
+use App\Service\BookingService;
 use App\Service\ParticipantEligibilityService;
 use Symfony\Component\Form\FormView;
+use Symfony\Component\HttpFoundation\RequestStack;
 use Twig\Environment;
 use Twig\Extension\RuntimeExtensionInterface;
 use Twig\Extra\Intl\IntlExtension;
@@ -20,6 +22,7 @@ class AppRuntime implements RuntimeExtensionInterface
         private readonly ParticipantEligibilityService $participantEligibilityService,
         private readonly CreateFieldStateProvider $createFieldStateProvider,
         private readonly EditFieldStateProvider $editFieldStateProvider,
+        private readonly RequestStack $requestStack,
         private readonly string $environment,
     ) {
     }
@@ -211,6 +214,21 @@ class AppRuntime implements RuntimeExtensionInterface
         return $labels;
     }
 
+    /**
+     * Returns the current booking theme from session.
+     *
+     * Defaults to 'base' if no theme is set.
+     */
+    public function getBookingTheme(): string
+    {
+        $request = $this->requestStack->getCurrentRequest();
+        if (null === $request) {
+            return BookingService::DEFAULT_THEME;
+        }
+
+        return $request->getSession()->get(BookingService::THEME_KEY, BookingService::DEFAULT_THEME);
+    }
+
     /**
      * Gets the appropriate field state provider based on booking mode.
      *