feat: inform user about automatic reassignments or reset selections

src/Controller/Booking/CreateStep2Controller.php

@@ -131,6 +131,9 @@ class CreateStep2Controller extends AbstractController
 
         $this->bookingService->saveBookingCreateDto($request, $bookingCreateDto);
 
+        // Collect notifications from all participants
+        $notifications = $this->collectParticipantNotifications($bookingCreateDto);
+
         $summary = $this->bookingService->getRoomSummaryAndParticipantCount($bookingCreateDto);
         $roomAssignmentCounts = $this->bookingService->getRoomAssignmentCounts($bookingCreateDto);
         $availableRooms = $bookingCreateDto->travel->getAvailableRooms();
@@ -139,7 +142,7 @@ class CreateStep2Controller extends AbstractController
 
         // The DTO is now updated with the latest selection and submitted data has been cleaned.
         // We can now render the blocks with the fresh data.
-        return $this->htmxOobResponse(
+        $response = $this->htmxOobResponse(
             'booking/create_step_2.html.twig',
             ['participants_form', 'booking_summary'],
             [
@@ -152,6 +155,15 @@ class CreateStep2Controller extends AbstractController
                 'groupedSelectedRooms' => $groupedSelectedRooms,
             ]
         );
+
+        // Add notifications to HTMX trigger header if any exist
+        if ([] !== $notifications) {
+            $response->headers->set('HX-Trigger', json_encode([
+                'showNotifications' => ['notifications' => $notifications],
+            ]));
+        }
+
+        return $response;
     }
 
     /**
@@ -233,4 +245,28 @@ class CreateStep2Controller extends AbstractController
             $this->roomAssignmentService->assignParticipantsToRooms($bookingCreateDto);
         }
     }
+
+    /**
+     * Collects all notifications from participants and clears them.
+     *
+     * @param BookingCreateDto $bookingCreateDto The booking DTO containing participants
+     *
+     * @return array<array{type: string, message: string}> Array of notification messages
+     */
+    private function collectParticipantNotifications(BookingCreateDto $bookingCreateDto): array
+    {
+        $notifications = [];
+
+        foreach ($bookingCreateDto->participants as $participant) {
+            if ([] !== $participant->notifications) {
+                foreach ($participant->notifications as $notification) {
+                    $notifications[] = $notification;
+                }
+                // Clear notifications after collection
+                $participant->notifications = [];
+            }
+        }
+
+        return $notifications;
+    }
 }

src/Form/Model/ParticipantDto.php

@@ -77,6 +77,11 @@ class ParticipantDto
     // Bulk insurance booking flag (applicant only: when checked, assigns same insurance type to all participants)
     public bool $bulkInsuranceBooking = false;
 
+    /**
+     * @var array<array{type: string, message: string}> Notification messages for user feedback
+     */
+    public array $notifications = [];
+
     public static function fromPersonalData(PersonalData $personalData): static
     {
         $instance = new static();
@@ -164,4 +169,18 @@ class ParticipantDto
     {
         return $this->insurance?->price ?? 0.0;
     }
+
+    /**
+     * Adds a notification message for user feedback.
+     *
+     * @param string $type    The notification type (info, warning, success)
+     * @param string $message The notification message
+     */
+    public function addNotification(string $type, string $message): void
+    {
+        $this->notifications[] = [
+            'type' => $type,
+            'message' => $message,
+        ];
+    }
 }

src/Form/Service/ParticipantInsuranceFieldHandler.php

@@ -151,6 +151,13 @@ class ParticipantInsuranceFieldHandler extends AbstractParticipantFieldHandler
                         $bookingDto
                     );
                     $participant->insurance = $reassignedInsurance;
+
+                    if (null !== $reassignedInsurance) {
+                        $participant->addNotification(
+                            'info',
+                            sprintf('Versicherung automatisch angepasst: %s', $reassignedInsurance->label)
+                        );
+                    }
                 }
             } else {
                 // Insurance not found - clear selection
@@ -174,6 +181,14 @@ class ParticipantInsuranceFieldHandler extends AbstractParticipantFieldHandler
                     $participant,
                     $bookingDto
                 );
+
+                if (null !== $reassignedInsurance && $reassignedInsurance->id !== $currentInsurance->id) {
+                    $participant->addNotification(
+                        'info',
+                        sprintf('Versicherung automatisch angepasst an neuen Preis: %s', $reassignedInsurance->label)
+                    );
+                }
+
                 $participant->insurance = $reassignedInsurance; // null if no suitable match found
             }
 

src/Form/Service/ParticipantRentalsFieldHandler.php

@@ -64,9 +64,18 @@ class ParticipantRentalsFieldHandler extends AbstractParticipantFieldHandler
             return;
         }
 
+        // Store previous rental state BEFORE checking skipass
+        $previousRentals = $participant->rentals;
+
         // Check if rentals should be available based on skipass selection
         if (null === $participant->skiPass) {
             // No skipass selected = clear all rental selections
+            if ([] !== $previousRentals) {
+                $participant->addNotification(
+                    'warning',
+                    'Ausrüstung wurde entfernt (kein Skipass ausgewählt)'
+                );
+            }
             $participant->rentals = [];
 
             return;
@@ -85,6 +94,14 @@ class ParticipantRentalsFieldHandler extends AbstractParticipantFieldHandler
             $participantIndex
         );
 
+        // Notify if rentals were cleared due to skipass duration change
+        if ([] !== $previousRentals && [] === $validSelections) {
+            $participant->addNotification(
+                'warning',
+                'Ausrüstung wurde entfernt (andere Skipass-Dauer ausgewählt)'
+            );
+        }
+
         $participant->rentals = $validSelections;
     }
 
@@ -168,7 +185,7 @@ class ParticipantRentalsFieldHandler extends AbstractParticipantFieldHandler
      * - rental.dateFrom === skipass.dateFrom
      * - rental.dateTo === skipass.dateTo
      *
-     * @param array            $rentals     All available rental services
+     * @param array                          $rentals     All available rental services
      * @param \App\Form\Model\ParticipantDto $participant The participant with skipass selection
      *
      * @return array Filtered rentals matching the skipass duration