feat: surcharges and discounts per participant and in summary

src/Service/BookingPriceCalculatorService.php

@@ -42,11 +42,26 @@ class BookingPriceCalculatorService
         $servicePricing = $this->calculateServicePricing($bookingDto);
         $grandTotal = $this->calculateGrandTotal($bookingDto);
 
-        return [
+        $result = [
             'rooms' => $roomPricing,
             'services' => $servicePricing,
             'grandTotal' => $grandTotal,
         ];
+
+        // Add surcharges if in edit mode with booking data
+        if (null !== $bookingDto->booking && [] !== $bookingDto->booking->surcharges) {
+            $surchargePricing = $this->calculateSurchargePricing($bookingDto->booking);
+
+            if ([] !== $surchargePricing) {
+                $result['surcharges'] = $surchargePricing;
+
+                // Add surcharge total to grand total
+                $surchargeTotal = array_sum(array_column($surchargePricing, 'totalPrice'));
+                $result['grandTotal'] += $surchargeTotal;
+            }
+        }
+
+        return $result;
     }
 
     /**
@@ -225,6 +240,31 @@ class BookingPriceCalculatorService
         return array_sum(array_column($servicePricing, 'groupTotal'));
     }
 
+    /**
+     * Calculates surcharge pricing grouped by label (edit mode only).
+     *
+     * Returns surcharges in a format similar to services for display in summary.
+     * Groups surcharges by label and counts participant assignments.
+     *
+     * @param \App\BusProNet\Model\Booking $bookingData The booking entity with surcharge information
+     *
+     * @return array Array of surcharge data with labels, counts, and totals
+     */
+    public function calculateSurchargePricing(\App\BusProNet\Model\Booking $bookingData): array
+    {
+        $surchargePricing = [];
+
+        foreach ($bookingData->surcharges as $surcharge) {
+            $surchargePricing[] = [
+                'label' => $surcharge->label ?? 'unbekannt',
+                'participantCount' => count($surcharge->mapping),
+                'totalPrice' => $surcharge->totalPrice ?? 0.0,
+            ];
+        }
+
+        return $surchargePricing;
+    }
+
     /**
      * Formats a price value for display with proper German formatting.
      *