feat(purchase): ketika di hapus, stok item nya ikut terhapus

app/Livewire/Studio/Manage/Purchase/Index.php

@@ -3,6 +3,7 @@
 namespace App\Livewire\Studio\Manage\Purchase;
 
 use App\Models\Purchase;
+use App\Traits\Purchase\WithUpdateStock;
 use App\Traits\WithCloseModal;
 use App\Traits\WithConfirmation;
 use App\Traits\WithToast;
@@ -13,10 +14,14 @@
 #[Title('Belanja')]
 class Index extends Component
 {
-    use WithCloseModal, WithConfirmation, WithToast;
+    use WithCloseModal, WithConfirmation, WithToast, WithUpdateStock;
 
     public function delete(Purchase $purchase)
     {
+        foreach ($purchase->items as $item) {
+            $this->decreaseOutletStock($purchase->outlet, $item);
+        }
+
         $purchase->delete();
 
         $this->dispatch('refreshDatatable');

app/Traits/Purchase/WithUpdateStock.php

@@ -26,9 +26,7 @@ public function increaseOutletStock($outlet, $item)
                 return;
         }
 
-        $existing = $outlet->{$relation}()
-            ->where("{$relation}.id", $item->purchasable_id)
-            ->first();
+        $existing = $outlet->{$relation}()->where("{$relation}.id", $item->purchasable_id)->first();
 
         if ($existing) {
             $currentStock = $existing->pivot->stock ?? 0;
@@ -41,4 +39,33 @@ public function increaseOutletStock($outlet, $item)
             ]);
         }
     }
+
+    public function decreaseOutletStock($outlet, $item)
+    {
+        $quantity = $item->quantity;
+
+        switch ($item->purchasable_type) {
+            case Perfume::class:
+                $relation = 'perfumes';
+                break;
+            case Product::class:
+                $relation = 'products';
+                break;
+            case Bottle::class:
+                $relation = 'bottles';
+                break;
+            default:
+                return;
+        }
+
+        $existing = $outlet->{$relation}()->where("{$relation}.id", $item->purchasable_id)->first();
+
+        if ($existing) {
+            $currentStock = $existing->pivot->stock ?? 0;
+            $newStock = max(0, $currentStock - $quantity);
+            $outlet->{$relation}()->updateExistingPivot($item->purchasable_id, [
+                'stock' => $newStock,
+            ]);
+        }
+    }
 }