feat: correct determination of inquiry status and conditional voucher field display

src/Controller/Booking/Create/IndexController.php

@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace App\Controller\Booking\Create;
 
 use App\BusProNet\XmlLoader\AgencyLoader;
-use App\Exception\BookingNotPossibleException;
 use App\Exception\HotelNotFoundException;
 use App\Exception\HotelNotInTravelException;
 use App\Exception\NoRoomsAvailableException;
@@ -70,8 +69,6 @@ class IndexController extends AbstractController
             throw $this->createNotFoundException(sprintf('Hotel ID %d is not available for travel ID %d', $hotelId, $dateId));
         } catch (NoRoomsAvailableException) {
             throw $this->createNotFoundException('No rooms available for this travel.');
-        } catch (BookingNotPossibleException) {
-            throw $this->createNotFoundException('Booking is not possible for this travel (Buchungsstop).');
         }
     }
 

src/Controller/Booking/Create/Step1Controller.php

@@ -70,6 +70,9 @@ class Step1Controller extends AbstractController
                 $this->bookingService->resetParticipantAssignments($bookingCreateDto);
             }
 
+            // Check if room selection forces inquiry mode
+            $this->bookingService->updateBookingStatusFromRoomSelection($bookingCreateDto);
+
             $bookingCreateDto->currentStep = 2;
             $this->bookingService->saveBookingCreateDto($request, $bookingCreateDto);
 

src/Controller/Booking/Create/Step3Controller.php

@@ -88,6 +88,24 @@ class Step3Controller extends AbstractController
                 }
 
                 if (false === $inquiryResponse->isInquiryValid()) {
+                    // Check if API suggests inquiry booking instead of showing error
+                    if ($this->shouldFallbackToInquiryMode($inquiryResponse)) {
+                        // Auto-switch to inquiry mode
+                        $bookingCreateDto->bookingStatus = 'A';
+                        $bookingCreateDto->currentStep = 4;
+                        $this->bookingService->saveBookingCreateDto($request, $bookingCreateDto);
+
+                        $message = 'Buchung konnte nicht validiert werden.';
+                        if (null !== $inquiryResponse->message && '' !== trim($inquiryResponse->message)) {
+                            $message = $inquiryResponse->message;
+                        }
+
+                        $this->addFlash('info', $message);
+
+                        return $this->hxRedirect($request, $this->generateUrl('app_booking_create_step_4'));
+                    }
+
+                    // Not a fallback scenario - show validation error
                     $errorMessage = 'Buchung konnte nicht validiert werden.';
                     if (null !== $inquiryResponse->message && '' !== trim($inquiryResponse->message)) {
                         $errorMessage .= ' '.$inquiryResponse->message;
@@ -199,4 +217,31 @@ class Step3Controller extends AbstractController
             'groupedSelectedRooms' => $groupedSelectedRooms,
         ]);
     }
+
+    /**
+     * Determines if validation failure should trigger inquiry mode fallback.
+     *
+     * Checks if the API response indicates that the booking should proceed as
+     * an inquiry rather than showing an error. This handles scenarios where
+     * availability changes between booking initialization and validation.
+     *
+     * @param \App\BusProNet\Model\BookingResponse $response The API response
+     *
+     * @return bool True if should fallback to inquiry mode, false if should show error
+     */
+    private function shouldFallbackToInquiryMode(\App\BusProNet\Model\BookingResponse $response): bool
+    {
+        // Check for "nicht möglich" status + inquiry suggestion in message
+        if ('nicht möglich' !== $response->status) {
+            return false;
+        }
+
+        $message = $response->message ?? '';
+        if ('' === $message) {
+            return false;
+        }
+
+        // Check if message suggests inquiry booking (case-insensitive)
+        return 1 === preg_match('/anfrage/i', $message);
+    }
 }

src/Controller/Booking/Create/Step4Controller.php

@@ -21,6 +21,7 @@ use Symfony\Component\Form\FormInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Contracts\Cache\CacheInterface;
 
 /**
  * Handles the fourth step of the booking creation process (confirmation).
@@ -36,6 +37,7 @@ class Step4Controller extends AbstractController
         private readonly BookingSummaryDataService $summaryDataService,
         private readonly BookingPriceCalculatorService $priceCalculator,
         private readonly ApiClient $apiClient,
+        private readonly CacheInterface $cache,
         private readonly LoggerInterface $logger,
     ) {
     }
@@ -99,6 +101,7 @@ class Step4Controller extends AbstractController
 
                 // Success: Store booking number in flash and clear session
                 $this->addFlash('booking_number', $bookingResponse->transactionNumber);
+                $this->clearTravelDataCache($bookingCreateDto);
                 $this->bookingService->clearBookingCreateDto($request);
 
                 return $this->hxRedirect($request, $this->generateUrl('app_booking_create_success'));
@@ -151,4 +154,25 @@ class Step4Controller extends AbstractController
             'participantPrices' => $this->priceCalculator->calculateAllParticipantIndividualPrices($bookingCreateDto),
         ]);
     }
+
+    /**
+     * Clears travel data and availability cache after successful booking.
+     */
+    private function clearTravelDataCache(BookingDto $bookingDto): void
+    {
+        $dateId = $bookingDto->travel->id;
+        $hotelId = $bookingDto->hotelId;
+
+        // Clear availability cache
+        $this->cache->delete(sprintf('availability_%d', $dateId));
+
+        // Clear travel data cache (both local and remote variants)
+        $this->cache->delete(sprintf('travel_unified_%d_%d_local', $dateId, $hotelId));
+        $this->cache->delete(sprintf('travel_unified_%d_%d_remote', $dateId, $hotelId));
+
+        $this->logger->info('Cleared travel data cache after successful booking', [
+            'dateId' => $dateId,
+            'hotelId' => $hotelId,
+        ]);
+    }
 }