wip: booking summary for step 1

src/Service/BookingService.php

@@ -120,4 +120,21 @@ class BookingService
 
         return $counts;
     }
+
+    /**
+     * Returns a summary of selected rooms and the resulting participant count for a booking.
+     *
+     * @param BookingCreateDto $bookingCreateDto
+     * @return array{selectedRooms: array, participantCount: int}
+     */
+    public function getRoomSummaryAndParticipantCount(BookingCreateDto $bookingCreateDto): array
+    {
+        $selectedRooms = $bookingCreateDto->getSelectedRooms();
+        $participantCount = $this->getParticipantsCount($selectedRooms, $bookingCreateDto->travel);
+
+        return [
+            'selectedRooms' => $selectedRooms,
+            'participantCount' => $participantCount,
+        ];
+    }
 }