feat: refactor cart item handling to use mapped buyable types and improve method signatures

app/Domains/Purchase/Resources/PurchaseItemResource.php

@@ -25,7 +25,7 @@ class PurchaseItemResource extends JsonResource
 
         $imageUrl = null;
         $attributes = [];
-        if ($this->buyable_type === 'variant' && $buyable) {
+        if ($this->buyable_type === \App\Domains\Catalog\Models\ProductVariant::class && $buyable) {
             $imageUrl = $this->resolveImageUrl($buyable);
             $attributes = $this->resolveAttributes($buyable);
         }
@@ -35,7 +35,7 @@ class PurchaseItemResource extends JsonResource
             'quantity' => $quantity,
             'unit_price' => $this->formatMoney($unitPrice),
             'line_total' => $this->formatMoney($lineTotal),
-            'buyable_type' => $this->buyable_type,
+            'buyable_type' => $this->mapBuyableTypeToAlias($this->buyable_type),
             'buyable_id' => $this->buyable_id,
             'item_details' => $buyable === null ? null : [
                 'nombre' => $buyable->getName(),
@@ -45,6 +45,15 @@ 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',
+            default => 'unknown',
+        };
+    }
+
     protected function resolveUnitPrice(): float
     {
         if ($this->resource instanceof PurchaseItem) {