feat: extended price mismatch diagnostics in logs

src/Controller/Booking/Create/Step3Controller.php

@@ -14,6 +14,7 @@ use App\Form\BookingCreateStep3Type;
 use App\Form\Model\BookingDto;
 use App\Htmx\HxTrait;
 use App\Service\BookingPriceCalculatorService;
+use App\Service\BookingPriceMismatchDiagnosticsService;
 use App\Service\BookingService;
 use App\Service\BookingSummaryDataService;
 use Psr\Log\LoggerInterface;
@@ -36,6 +37,7 @@ class Step3Controller extends AbstractController
         private readonly BookingService $bookingService,
         private readonly BookingSummaryDataService $summaryDataService,
         private readonly BookingPriceCalculatorService $priceCalculator,
+        private readonly BookingPriceMismatchDiagnosticsService $priceMismatchDiagnostics,
         private readonly ApiClient $apiClient,
         private readonly LoggerInterface $logger,
     ) {
@@ -126,6 +128,9 @@ class Step3Controller extends AbstractController
                 $expectedTotal = round($calculatedSubtotal - $promoGoodwillDiscount - $apiAppliedDiscount, 2);
 
                 if ((int) round($apiTotal * 100) !== (int) round($expectedTotal * 100)) {
+                    $diagnostics = $this->priceMismatchDiagnostics->buildDiagnostics($bookingCreateDto, $inquiryResponse);
+                    $deltaBreakdown = $diagnostics['deltaBreakdown'] ?? [];
+
                     return $this->handleApiError(
                         'Price mismatch detected - payload incomplete',
                         [
@@ -135,6 +140,11 @@ class Step3Controller extends AbstractController
                             'apiAppliedDiscount' => $apiAppliedDiscount,
                             'expectedTotal' => $expectedTotal,
                             'difference' => abs($apiTotal - $expectedTotal),
+                            'deltaTotal' => $deltaBreakdown['deltaTotal'] ?? null,
+                            'deltaRoom' => $deltaBreakdown['deltaRoom'] ?? null,
+                            'deltaService' => $deltaBreakdown['deltaService'] ?? null,
+                            'deltaInsurance' => $deltaBreakdown['deltaInsurance'] ?? null,
+                            'diagnostics' => $diagnostics,
                         ],
                         'Preisabweichung festgestellt. Bitte wende dich an den Kundenservice.',
                         $bookingCreateDto,