feat: refactoring and cleanup

src/Service/BookingSummaryDataService.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace App\Service;
 
 use App\Form\Model\BookingDto;
+use App\Form\Model\BookingSummaryDto;
 use Psr\Log\LoggerInterface;
 use Symfony\Contracts\Cache\CacheInterface;
 use Symfony\Contracts\Cache\ItemInterface;
@@ -27,18 +28,8 @@ class BookingSummaryDataService
 
     /**
      * Get complete summary data for booking sidebar.
-     *
-     * @return array{
-     *     selectedRooms: array,
-     *     participantCount: int,
-     *     totalPrice: string,
-     *     groupedSelectedRooms: array,
-     *     assignmentCounts: array,
-     *     pricingData: array,
-     *     cmsData: array|null
-     * }
      */
-    public function getSummaryData(BookingDto $bookingDto): array
+    public function getSummaryData(BookingDto $bookingDto): BookingSummaryDto
     {
         // Get selected rooms (for Step1 controller compatibility)
         $selectedRooms = $bookingDto->getSelectedRooms();
@@ -57,7 +48,7 @@ class BookingSummaryDataService
             }
         }
 
-        // Group selected rooms with counts
+        // Group selected rooms with counts (for display)
         $groupedSelectedRooms = [];
         foreach ($roomCounts as $roomId => $count) {
             $room = $bookingDto->travel->getRoomById($roomId);
@@ -78,15 +69,15 @@ class BookingSummaryDataService
         // Calculate participant count from room capacity (source of truth)
         $participantCount = $this->calculateParticipantCountFromRooms($bookingDto);
 
-        return [
-            'selectedRooms' => $selectedRooms,
-            'participantCount' => $participantCount,
-            'totalPrice' => number_format($totalPrice, 2, ',', '.').' €',
-            'groupedSelectedRooms' => $groupedSelectedRooms,
-            'assignmentCounts' => $roomCounts,
-            'pricingData' => $pricingData,
-            'cmsData' => $cmsData,
-        ];
+        return new BookingSummaryDto(
+            selectedRooms: $selectedRooms,
+            participantCount: $participantCount,
+            totalPrice: number_format($totalPrice, 2, ',', '.').' €',
+            groupedSelectedRooms: $groupedSelectedRooms,
+            assignmentCounts: $roomCounts,
+            pricingData: $pricingData,
+            cmsData: $cmsData,
+        );
     }
 
     /**