feat: implement cart service and resource to manage user and guest shopping carts

app/Domains/Cart/Resources/CartItemResource.php

@@ -2,7 +2,6 @@
 
 namespace App\Domains\Cart\Resources;
 
-use App\Domains\Catalog\Resources\ProductVariantDefinitionResource;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
 
@@ -19,19 +18,39 @@ class CartItemResource extends JsonResource
         $variant = $this->variant;
         $product = $variant?->product;
 
+        $attributesText = '';
+        if ($variant && $variant->relationLoaded('definitions')) {
+            $attributesText = $variant->definitions
+                ->map(function ($definition) {
+                    $attrName = $definition->productAttribute?->attribute?->nombre;
+                    $value = $definition->value;
+                    return $attrName ? "{$attrName}: {$value}" : $value;
+                })
+                ->filter()
+                ->implode(', ');
+        }
+
+        $productName = $product?->nombre;
+        if ($productName && $attributesText !== '') {
+            $productName .= " ({$attributesText})";
+        }
+
+        $imageUrl = null;
+        if ($variant && $variant->relationLoaded('attachments')) {
+            $firstAttachment = $variant->attachments->first();
+            if ($firstAttachment) {
+                $imageUrl = $firstAttachment->getTemporaryUrl(1440);
+            }
+        }
+
         return [
             'id' => $this->id,
             'cantidad' => $this->cantidad,
             'precio_unitario' => $this->formatMoney($product?->precio),
-            'subtotal' => $this->formatMoney(($product?->precio ?? 0) * $this->cantidad),
+            'product_id' => $product?->id,
             'product' => $product === null ? null : [
-                'id' => $product->id,
-                'nombre' => $product->nombre,
-                'slug' => $product->slug,
-            ],
-            'variant' => $variant === null ? null : [
-                'id' => $variant->id,
-                'definitions' => ProductVariantDefinitionResource::collection($variant->definitions),
+                'nombre' => $productName,
+                'imagen' => $imageUrl,
             ],
         ];
     }