feat: automatic saving of drafts when editing bookings

src/Controller/Booking/Edit/IndexController.php

@@ -10,8 +10,8 @@ use App\BusProNet\Exception\TimeoutException;
 use App\BusProNet\Model\Notification;
 use App\Controller\Booking\Traits;
 use App\Controller\Booking\Traits\BookingExceptionHandlerTrait;
-use App\Exception\TravelNotFoundException;
 use App\Entity\User;
+use App\Exception\TravelNotFoundException;
 use App\Form\BookingEditType;
 use App\Form\BookingParticipantType;
 use App\Form\Model\BookingDto;
@@ -19,6 +19,7 @@ use App\Form\Model\ParticipantEditDto;
 use App\Htmx\HxTrait;
 use App\Security\Crypt;
 use App\Service\BookingEditDataLoaderService;
+use App\Service\BookingEditDraftService;
 use App\Service\BookingFingerprintService;
 use App\Service\BookingService;
 use App\Service\BookingSummaryDataService;
@@ -49,6 +50,7 @@ class IndexController extends AbstractController
     public function __construct(
         private readonly ApiClient $apiClient,
         private readonly BookingEditDataLoaderService $dataLoader,
+        private readonly BookingEditDraftService $draftService,
         private readonly TravelDataService $travelDataService,
         private readonly BookingService $bookingService,
         private readonly BookingFingerprintService $fingerprintService,
@@ -73,7 +75,7 @@ class IndexController extends AbstractController
 
         // Load form data from session (or API on first load)
         try {
-            $bookingDto = $this->dataLoader->loadFormData($request, $id, $email, $password);
+            $bookingDto = $this->dataLoader->loadFormData($request, $id, $email, $password, $user);
         } catch (TravelNotFoundException) {
             $this->addFlash('error', 'Reisedaten sind nicht (mehr) verfügbar');
 
@@ -86,6 +88,11 @@ class IndexController extends AbstractController
             return $this->redirectToRoute('app_bookings');
         }
 
+        // Show flash message if draft was restored
+        if (true === $this->dataLoader->wasDraftRestored()) {
+            $this->addFlash('info', 'Dein zuvor gespeicherter Entwurf wurde wiederhergestellt.');
+        }
+
         // Fetch booking data for display (surcharges, canceled status, etc.)
         $bookingData = $this->dataLoader->fetchBookingData($email, $password, $id);
         if (null === $bookingData || $bookingData instanceof Notification) {
@@ -103,7 +110,7 @@ class IndexController extends AbstractController
 
         // Handle form submission (clicking "Buchung aktualisieren")
         if ($form->isSubmitted() && $form->isValid()) {
-            return $this->handleFormSubmission($request, $bookingDto, $id, $email);
+            return $this->handleFormSubmission($request, $bookingDto, $id, $email, $user);
         }
 
         // Always generate card data with validation state to show completeness
@@ -202,6 +209,9 @@ class IndexController extends AbstractController
             // Save updated booking data to session
             $this->bookingService->saveBookingDto($request, $bookingDto, BookingDto::MODE_EDIT);
 
+            // Auto-save draft to database for data persistence
+            $this->draftService->saveDraft($user, $id, $bookingDto);
+
             // Add notifications as flash messages (redirects destroy HTMX-triggered toasts)
             $this->addNotificationsAsFlashMessages($notifications);
 
@@ -376,7 +386,7 @@ class IndexController extends AbstractController
     /**
      * Handles form submission for booking update.
      */
-    private function handleFormSubmission(Request $request, BookingDto $bookingDto, int $id, string $email): Response
+    private function handleFormSubmission(Request $request, BookingDto $bookingDto, int $id, string $email, User $user): Response
     {
         $this->logger->info('Initiated booking update', [
             'email' => $email,
@@ -401,6 +411,9 @@ class IndexController extends AbstractController
                 $this->dataLoader->invalidateBookingCache($id);
                 $this->bookingService->clearBookingDto($request, BookingDto::MODE_EDIT);
 
+                // Delete draft on successful submission
+                $this->draftService->deleteDraft($user, $id);
+
                 $this->addFlash('success', 'Buchung erfolgreich aktualisiert');
                 $this->logger->info('Booking update successful', [
                     'email' => $email,