refactor(backend): reorganize domains into Core, Commerce, Ticketing and Shared

app/Domains/Commerce/Purchase/Services/PurchaseStateGuard.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace App\Domains\Purchase\Services;
+
+use App\Domains\Cart\Models\Cart;
+use App\Domains\Catalog\Models\StockReservation;
+use App\Domains\Purchase\Exceptions\PurchaseExpiredException;
+use App\Domains\Purchase\Models\Purchase;
+use Illuminate\Validation\ValidationException;
+
+class PurchaseStateGuard
+{
+    public function assertNotExpired(Purchase $purchase): void
+    {
+        if ($purchase->status === Purchase::STATUS_EXPIRED) {
+            throw new PurchaseExpiredException;
+        }
+
+        if (! in_array($purchase->status, [
+            Purchase::STATUS_CREATED,
+            Purchase::STATUS_PENDING_PAYMENT,
+        ], true)) {
+            return;
+        }
+
+        /** @var StockReservation|null $reservation */
+        $reservation = $purchase->relationLoaded('stockReservation')
+            ? $purchase->getRelation('stockReservation')
+            : ($purchase->exists
+                ? $purchase->stockReservation()->first()
+                : null);
+
+        if ($reservation !== null && (
+            $reservation->status === StockReservation::STATUS_EXPIRED
+            || (
+                $reservation->status === StockReservation::STATUS_ACTIVE
+                && $reservation->expires_at !== null
+                && ! $reservation->expires_at->isFuture()
+            )
+        )) {
+            throw new PurchaseExpiredException;
+        }
+    }
+
+    public function lockCurrentCart(Purchase $purchase): Cart
+    {
+        /** @var Cart|null $cart */
+        $cart = $purchase->cart()->withTrashed()->lockForUpdate()->first();
+
+        if ($cart === null || $cart->current_purchase_id !== $purchase->getKey()) {
+            throw ValidationException::withMessages([
+                'purchase' => __('api.purchase.not_current'),
+            ]);
+        }
+
+        return $cart;
+    }
+}