feat(order): throw transaction jika stok produk tidak mencukupi

app/Livewire/Forms/Studio/Manage/OrderForm.php

@@ -115,6 +115,7 @@ public function store()
 
         // Wrap the entire operation in a database transaction
         // Ensures atomicity — if any step fails, all changes are rolled back
+        try {
             DB::transaction(function () use ($invoiceNumber, $cogs, $subtotal, $discount, $total, $items, $pointsEarned) {
                 $member = User::whereHas('customer', fn ($q) => $q->where('id', $this->member_id))
                     ->with(['membership' => fn ($q) => $q->lockForUpdate()])
@@ -136,14 +137,18 @@ public function store()
                     'ordered_at' => now(),
                 ]);
 
+                foreach ($items as $item) {
+                    // Deduct item stock from the outlet inventory
+                    $result = $this->decreaseOutletStock($order->outlet, $item);
+
+                    if ($result && ! $result['status']) {
+                        throw new \Exception($result['message']);
+                    }
+
                     // Attach all order items to the newly created order
-            $items->each(function ($item) use ($order) {
                     $item->order_id = $order->id;
                     $item->save();
-
-                // Deduct item stock from the outlet inventory
-                $this->decreaseOutletStock($order->outlet, $item);
-            });
+                }
 
                 // Automatically record payment for the order
                 Payment::create([
@@ -187,9 +192,13 @@ public function store()
                     ]);
                 }
             });
-
+        } catch (\Exception $e) {
             return [
-            'status' => true,
+                'status' => false,
+                'message' => $e->getMessage(),
             ];
         }
+
+        return ['status' => true];
+    }
 }

app/Traits/Order/WithUpdateStock.php

@@ -73,15 +73,27 @@ public function decreaseOutletStock($outlet, $item)
                 return;
         }
 
-        $existing = $outlet->{$relation}()->withPivot('stock')->where("{$relation}.id", $item->orderable_id)->first();
+        $existing = $outlet->{$relation}()
+            ->withPivot('stock')
+            ->where("{$relation}.id", $item->orderable_id)
+            ->lockForUpdate()
+            ->first();
+
+        if (! $existing) {
+            return ['status' => false, 'message' => "Produk {$item->orderable->name} tidak ditemukan di {$outlet->name}."];
+        }
 
-        if ($existing) {
         $currentStock = $existing->pivot->stock ?? 0;
-            $newStock = max(0, $currentStock - $quantity);
+
+        if ($currentStock < $quantity) {
+            return ['status' => false, 'message' => "Stok produk {$item->orderable->name} tidak mencukupi. Tersisa {$currentStock}, diminta {$quantity}. Silakan hubungi Administrator."];
+        }
+
+        $newStock = $currentStock - $quantity;
+
         $outlet->{$relation}()->updateExistingPivot($item->orderable_id, [
             'stock' => $newStock,
         ]);
-        }
 
         activity('Order')
             ->performedOn($item->orderable)