feat: groups price calculator admin crud, booking/offer flow and api

src/Service/AccommodationBookingBreakdownCalculator.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\Groups\AccommodationBooking;
+use App\Repository\Groups\AccommodationPriceRepository;
+
+class AccommodationBookingBreakdownCalculator
+{
+    public function __construct(
+        private readonly GroupsPriceCalculator $priceCalculator,
+        private readonly AccommodationPriceRepository $priceRepo,
+    ) {
+    }
+
+    /**
+     * Returns the authoritative stored snapshot, falling back to current prices only for
+     * bookings created before snapshot persistence was introduced.
+     *
+     * @return array<string, mixed>|null null when no accommodation or dates are set
+     */
+    public function compute(AccommodationBooking $booking): ?array
+    {
+        if (null !== $booking->getPriceBreakdown()) {
+            return $booking->getPriceBreakdown();
+        }
+
+        return $this->computeCurrent($booking);
+    }
+
+    /**
+     * Calculates against the current catalog. Use only while creating or explicitly editing
+     * a booking, or as a compatibility fallback for records created before price snapshots.
+     *
+     * @return array<string, mixed>|null
+     */
+    public function computeCurrent(AccommodationBooking $booking): ?array
+    {
+        $accommodation = $booking->getAccommodation();
+        $dateFrom = $booking->getDateFrom();
+        $dateTo = $booking->getDateTo();
+
+        if (null === $accommodation || null === $dateFrom || null === $dateTo) {
+            return null;
+        }
+
+        $prices = $this->priceRepo->findByHotelCodeAndDateRange(
+            $accommodation->getCalendarCode() ?? '',
+            $dateFrom,
+            $dateTo,
+        );
+
+        return $this->priceCalculator->calculateFromSnapshots(
+            $booking->getPaxCount(),
+            $booking->getMinorsCount(),
+            $booking->getNights(),
+            $dateFrom,
+            $dateTo,
+            $prices,
+            $booking->getBoardServicePrice(),
+            $booking->getAdditionalServices(),
+            $accommodation->getCurrency(),
+        );
+    }
+}