feat: implement order cancellation logic to restore stock while preserving existing order items

app/Http/Controllers/Admin/Manage/OrderController.php

@@ -36,7 +36,7 @@ public function create(): Response
                 ->whereNull('order_id')
                 ->latest()
                 ->get(),
-            'orderStatus' => OrderStatus::options(),
+            'orderStatus' => collect(OrderStatus::options())->filter(fn ($opt) => $opt['value'] !== OrderStatus::CANCELLED->value)->values()->toArray(),
             'orderChannels' => OrderChannel::options(),
             'paymentMethods' => PaymentMethod::options(),
             'priceTypes' => PriceType::options(),
@@ -136,21 +136,51 @@ public function update(OrderRequest $request, Order $order): RedirectResponse
 
         try {
             DB::transaction(function () use ($validated, $order) {
-                $totalItemsPrice = collect($validated['items'])->sum(fn ($item) => $item['qty'] * $item['price']);
-                $cogs = collect($validated['items'])->sum(function ($item) {
+                $isCancelled = $validated['order_status'] === OrderStatus::CANCELLED->value;
+                $wasCancelled = ($order->order_status instanceof OrderStatus ? $order->order_status->value : $order->order_status) === OrderStatus::CANCELLED->value;
+
+                // 1. Jika status SEKARANG adalah GAGAL
+                if ($isCancelled) {
+                    // Kembalikan stok jika sebelumnya TIDAK gagal
+                    if (! $wasCancelled) {
+                        foreach ($order->items as $item) {
+                            $item->product->increment('stock', $item->qty);
+                        }
+                    }
+
+                    // Update metadata saja, jangan hapus item (sesuai request)
+                    $order->update([
+                        'customer_name' => $validated['customer_name'],
+                        'discount' => $validated['discount'],
+                        'payment' => $validated['payment'],
+                        'payment_method' => $validated['payment_method'],
+                        'order_status' => $validated['order_status'],
+                        'order_channel' => $validated['order_channel'],
+                    ]);
+
+                    return;
+                }
+
+                // 2. Jika status SEKARANG TIDAK GAGAL
+                // Kembalikan stok lama jika sebelumnya TIDAK gagal (karena kita akan mengganti item)
+                if (! $wasCancelled) {
+                    foreach ($order->items as $item) {
+                        $item->product->increment('stock', $item->qty);
+                    }
+                }
+
+                // Proses update item (hapus lama, buat baru)
+                $order->items()->delete();
+
+                $items = $validated['items'] ?? [];
+                $totalItemsPrice = collect($items)->sum(fn ($item) => $item['qty'] * $item['price']);
+                $cogs = collect($items)->sum(function ($item) {
                     $product = Product::find($item['product_id']);
                     $purchasePrice = $product->prices()->where('price_type', PriceType::PURCHASE)->first()?->price ?? 0;
 
                     return $purchasePrice * $item['qty'];
                 });
 
-                // Restore stock for old items
-                foreach ($order->items as $item) {
-                    $item->product->increment('stock', $item->qty);
-                }
-
-                $order->items()->delete();
-
                 $order->update([
                     'customer_name' => $validated['customer_name'],
                     'cogs' => $cogs,
@@ -162,7 +192,7 @@ public function update(OrderRequest $request, Order $order): RedirectResponse
                     'order_channel' => $validated['order_channel'],
                 ]);
 
-                foreach ($validated['items'] as $item) {
+                foreach ($items as $item) {
                     $order->items()->create([
                         'user_id' => auth()->id(),
                         'product_id' => $item['product_id'],
@@ -172,6 +202,7 @@ public function update(OrderRequest $request, Order $order): RedirectResponse
                         'price_type' => $item['price_type'],
                     ]);
 
+                    // Potong stok (karena status sekarang bukan gagal)
                     $product = Product::find($item['product_id']);
                     if ($product->stock < $item['qty']) {
                         throw new \InvalidArgumentException("Stok produk {$product->name} tidak mencukupi. Sisa stok: {$product->stock}");

app/Http/Requests/Admin/Manage/Order/OrderRequest.php

@@ -27,20 +27,22 @@ public function authorize(): bool
      */
     public function rules(): array
     {
+        $isCancelled = $this->input('order_status') === OrderStatus::CANCELLED->value;
+
         return [
             'customer_name' => ['required', 'string', 'max:100'],
-            'subtotal' => ['required', 'integer', 'min:0'],
+            'subtotal' => ['nullable', 'integer', 'min:0'],
             'discount' => ['required', 'integer', 'min:0'],
             'payment' => ['required', 'integer', 'min:0'],
             'payment_method' => ['required', Rule::enum(PaymentMethod::class)],
             'order_status' => ['required', Rule::enum(OrderStatus::class)],
             'order_channel' => ['required', Rule::enum(OrderChannel::class)],
-            'items' => ['required', 'array', 'min:1'],
-            'items.*.product_id' => ['required', Rule::exists('products', 'id')->whereNull('deleted_at')],
-            'items.*.qty' => ['required', 'integer', 'min:1'],
-            'items.*.price' => ['required', 'integer', 'min:0'],
-            'items.*.total' => ['required', 'integer', 'min:0'],
-            'items.*.price_type' => ['required', Rule::enum(PriceType::class)],
+            'items' => [$isCancelled ? 'nullable' : 'required', 'array', $isCancelled ? 'min:0' : 'min:1'],
+            'items.*.product_id' => ['required_unless:order_status,cancelled', Rule::exists('products', 'id')->whereNull('deleted_at')],
+            'items.*.qty' => ['required_unless:order_status,cancelled', 'integer', 'min:1'],
+            'items.*.price' => ['required_unless:order_status,cancelled', 'integer', 'min:0'],
+            'items.*.total' => ['required_unless:order_status,cancelled', 'integer', 'min:0'],
+            'items.*.price_type' => ['required_unless:order_status,cancelled', Rule::enum(PriceType::class)],
         ];
     }
 }

app/Observers/OrderObserver.php

@@ -2,6 +2,7 @@
 
 namespace App\Observers;
 
+use App\Enums\OrderStatus;
 use App\Models\Order;
 
 class OrderObserver
@@ -40,8 +41,14 @@ public function updating(Order $order): void
      */
     public function deleting(Order $order): void
     {
-        foreach ($order->items as $item) {
-            $item->product->increment('stock', $item->qty);
+        $isCancelled = ($order->order_status instanceof OrderStatus ? $order->order_status->value : $order->order_status) === OrderStatus::CANCELLED->value;
+
+        if (! $isCancelled) {
+            foreach ($order->items as $item) {
+                $item->product->increment('stock', $item->qty);
+            }
         }
+
+        $order->items()->delete();
     }
 }

tests/Feature/Admin/Manage/OrderTest.php

@@ -79,6 +79,9 @@
                 ->component('admin/manage/order/create')
                 ->has('products')
                 ->has('cartItems')
+                ->where('orderStatus', function ($status) {
+                    return collect($status)->every(fn ($item) => $item['value'] !== OrderStatus::CANCELLED->value);
+                })
             );
     });
 
@@ -337,6 +340,54 @@
         expect($product2->fresh()->stock)->toBe(7);
     });
 
+    it('restores stock and preserves items when order status is changed to gagal', function () {
+        $product = Product::factory()->create(['stock' => 10]);
+        $order = Order::factory()->create(['order_status' => OrderStatus::PENDING->value]);
+
+        $item = $order->items()->create([
+            'user_id' => auth()->id(),
+            'product_id' => $product->id,
+            'qty' => 3,
+            'price' => 1000,
+            'total' => 3000,
+            'price_type' => PriceType::RETAIL->value,
+        ]);
+
+        $product->decrement('stock', 3);
+        expect($product->fresh()->stock)->toBe(7);
+
+        $newData = [
+            'customer_name' => $order->customer_name,
+            'subtotal' => 3000,
+            'discount' => 0,
+            'payment' => 3000,
+            'payment_method' => $order->payment_method,
+            'order_status' => OrderStatus::CANCELLED->value, // Change to Gagal
+            'order_channel' => $order->order_channel,
+            'items' => [
+                // Even if we send items, they shouldn't be deleted/updated based on my early return
+                [
+                    'product_id' => $product->id,
+                    'qty' => 5, // different qty
+                    'price' => 1000,
+                    'total' => 5000,
+                    'price_type' => PriceType::RETAIL->value,
+                ],
+            ],
+        ];
+
+        patchJson(route('order.update', $order), $newData)
+            ->assertRedirect();
+
+        // Stock should be restored (7 + 3 = 10)
+        expect($product->fresh()->stock)->toBe(10);
+
+        // Items should be preserved (original item with qty 3, NOT deleted/recreated with qty 5)
+        expect($order->items()->count())->toBe(1);
+        expect($order->items()->first()->qty)->toBe(3);
+        expect($order->items()->first()->id)->toBe($item->id); // Same ID means not deleted/recreated
+    });
+
     it('can delete an order and restore stock', function () {
         $product = Product::factory()->create(['stock' => 5]);
         $order = Order::factory()->create();