fix: consider parking space availability

tests/Form/Service/ParticipantFieldOptionsProviderMandatoryServiceTest.php

@@ -135,6 +135,64 @@ class ParticipantFieldOptionsProviderMandatoryServiceTest extends TestCase
         $this->assertSame('Parkplatz (€12,50)', $options['label']);
     }
 
+    public function testParkingIsReadonlyWhenSoldOut(): void
+    {
+        $parkingService = new Service();
+        $parkingService->id = 3;
+        $parkingService->label = 'Parkplatz';
+        $parkingService->subType = Constants::TOKEN_PARKING;
+        $parkingService->available = 0;
+        $parkingService->price = 12.5;
+
+        $travel = $this->createTravelWithAdditionalServices([$parkingService]);
+        $bookingDto = new BookingDto($travel, 1);
+
+        $participant = new ParticipantDto();
+        $participant->index = 0;
+        $participant->dateOfBirth = $travel->dateFrom->modify('-25 years');
+        $bookingDto->participants[0] = $participant;
+
+        $serviceAvailabilityCalculator = $this->createMock(ServiceAvailabilityCalculator::class);
+        $serviceAvailabilityCalculator->method('isServiceUnavailable')
+            ->with($parkingService->id, $bookingDto, 0)
+            ->willReturn(true);
+
+        $provider = new ParticipantFieldOptionsProvider(
+            $serviceAvailabilityCalculator,
+            $this->createMock(InsuranceManager::class),
+            $this->createMock(BookingPriceCalculator::class),
+            new ServiceLabelFormatter(),
+            $this->createMock(TranslatorInterface::class)
+        );
+
+        $options = $provider->getFieldOptions('parking', $bookingDto, 0);
+
+        $this->assertTrue($options['attr']['readonly']);
+        $this->assertSame('ausgebucht', $options['attr']['data-tooltip']);
+    }
+
+    public function testParkingIsNotReadonlyWhenAvailable(): void
+    {
+        $parkingService = new Service();
+        $parkingService->id = 3;
+        $parkingService->label = 'Parkplatz';
+        $parkingService->subType = Constants::TOKEN_PARKING;
+        $parkingService->available = 10;
+        $parkingService->price = 12.5;
+
+        $travel = $this->createTravelWithAdditionalServices([$parkingService]);
+        $bookingDto = new BookingDto($travel, 1);
+
+        $participant = new ParticipantDto();
+        $participant->index = 0;
+        $participant->dateOfBirth = $travel->dateFrom->modify('-25 years');
+        $bookingDto->participants[0] = $participant;
+
+        $options = $this->provider->getFieldOptions('parking', $bookingDto, 0);
+
+        $this->assertArrayNotHasKey('attr', $options);
+    }
+
     public function testNullParticipantReturnsEmptyOptions(): void
     {
         $mandatoryService = $this->createMandatoryService(1, 'Ortstaxe');