refactor(checkout): materialize purchase items on confirmation

app/Domains/Purchase/Services/UserPurchaseLimitService.php

@@ -2,6 +2,7 @@
 
 namespace App\Domains\Purchase\Services;
 
+use App\Domains\Cart\Models\CartItem;
 use App\Domains\Catalog\Models\CatalogItem;
 use App\Domains\Purchase\Models\Purchase;
 use App\Domains\Purchase\Models\PurchaseItem;
@@ -52,7 +53,24 @@ class UserPurchaseLimitService
                 })
                 ->sum('cantidad');
 
-            if ($purchasedQuantity + $requestedQuantity > $limit) {
+            $checkoutQuantity = (int) CartItem::query()
+                ->where('catalog_item_id', $catalogItem->getKey())
+                ->whereHas('cart.purchases', function ($query) use ($userId, $excludedPurchaseId): void {
+                    $query
+                        ->where('user_id', $userId)
+                        ->whereIn('status', [
+                            Purchase::STATUS_CREATED,
+                            Purchase::STATUS_PENDING_PAYMENT,
+                        ])
+                        ->whereDoesntHave('items')
+                        ->when(
+                            $excludedPurchaseId !== null,
+                            fn ($query) => $query->whereKeyNot($excludedPurchaseId),
+                        );
+                })
+                ->sum('cantidad');
+
+            if ($purchasedQuantity + $checkoutQuantity + $requestedQuantity > $limit) {
                 throw ValidationException::withMessages([
                     $field => __('api.purchase_limit.exceeded', ['max' => $limit]),
                 ]);