feat: refactor cart and purchase handling to support polymorphic buyable types and improve code readability

app/Domains/Purchase/Resources/PurchaseItemResource.php

@@ -2,13 +2,16 @@
 
 namespace App\Domains\Purchase\Resources;
 
+use App\Domains\Bundle\Models\Bundle;
 use App\Domains\Cart\Models\CartItem;
+use App\Domains\Catalog\Models\ProductVariant;
 use App\Domains\Purchase\Models\PurchaseItem;
+use App\Domains\Shared\Contracts\Buyable;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
 
 /**
- * @mixin \App\Domains\Purchase\Models\PurchaseItem|\App\Domains\Cart\Models\CartItem
+ * @mixin PurchaseItem|CartItem
  */
 class PurchaseItemResource extends JsonResource
 {
@@ -17,15 +20,16 @@ class PurchaseItemResource extends JsonResource
      */
     public function toArray(Request $request): array
     {
-        /** @var \App\Domains\Shared\Contracts\Buyable|null $buyable */
+        /** @var Buyable|null $buyable */
         $buyable = $this->buyable;
         $quantity = (int) ($this->cantidad ?? 0);
         $unitPrice = $this->resolveUnitPrice();
         $lineTotal = $this->resolveLineTotal($unitPrice, $quantity);
+        $variant = $buyable instanceof ProductVariant ? $buyable : null;
 
         $imageUrl = null;
         $attributes = [];
-        if ($this->buyable_type === \App\Domains\Catalog\Models\ProductVariant::class && $buyable) {
+        if ($this->buyable_type === ProductVariant::class && $buyable) {
             $imageUrl = $this->resolveImageUrl($buyable);
             $attributes = $this->resolveAttributes($buyable);
         }
@@ -37,6 +41,16 @@ class PurchaseItemResource extends JsonResource
             'line_total' => $this->formatMoney($lineTotal),
             'buyable_type' => $this->mapBuyableTypeToAlias($this->buyable_type),
             'buyable_id' => $this->buyable_id,
+            'product' => $variant === null ? null : [
+                'id' => $variant->product?->id,
+                'nombre' => $variant->product?->nombre,
+                'slug' => $variant->product?->slug,
+                'imagen' => $imageUrl,
+            ],
+            'variant' => $variant === null ? null : [
+                'id' => $variant->id,
+                'attributes' => $attributes,
+            ],
             'item_details' => $buyable === null ? null : [
                 'nombre' => $buyable->getName(),
                 'imagen' => $imageUrl,
@@ -48,8 +62,8 @@ class PurchaseItemResource extends JsonResource
     protected function mapBuyableTypeToAlias(?string $type): string
     {
         return match ($type) {
-            \App\Domains\Catalog\Models\ProductVariant::class => 'variant',
-            \App\Domains\Bundle\Models\Bundle::class => 'bundle',
+            ProductVariant::class => 'variant',
+            Bundle::class => 'bundle',
             default => 'unknown',
         };
     }