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

app/Domains/Cart/Requests/AddCartItemRequest.php

@@ -2,7 +2,10 @@
 
 namespace App\Domains\Cart\Requests;
 
+use App\Domains\Bundle\Models\Bundle;
+use App\Domains\Catalog\Models\ProductVariant;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 
 class AddCartItemRequest extends FormRequest
 {
@@ -17,7 +20,7 @@ class AddCartItemRequest extends FormRequest
     public function rules(): array
     {
         return [
-            'buyable_type' => ['required', 'string', \Illuminate\Validation\Rule::in(['variant', 'bundle'])],
+            'buyable_type' => ['required', 'string', Rule::in(['variant', 'bundle'])],
             'buyable_id' => ['required', 'integer'],
             'cantidad' => ['required', 'integer', 'min:1'],
         ];
@@ -26,8 +29,8 @@ class AddCartItemRequest extends FormRequest
     public function mappedBuyableType(): string
     {
         return match ($this->input('buyable_type')) {
-            'variant' => \App\Domains\Catalog\Models\ProductVariant::class,
-            'bundle' => \App\Domains\Bundle\Models\Bundle::class,
+            'variant' => ProductVariant::class,
+            'bundle' => Bundle::class,
             default => throw new \InvalidArgumentException('Invalid buyable type'),
         };
     }

app/Domains/Cart/Requests/UpdateCartItemQuantityRequest.php

@@ -18,6 +18,8 @@ class UpdateCartItemQuantityRequest extends FormRequest
     {
         return [
             'cantidad' => ['required', 'integer', 'min:1'],
+            'buyable_type' => ['prohibited'],
+            'buyable_id' => ['prohibited'],
         ];
     }
 }