Refactor code for improved readability and consistency

- Removed unnecessary blank lines in various files to enhance code clarity.
- Updated comments for consistency and clarity across multiple classes and methods.
- Adjusted spacing in test files for better formatting and readability.

tests/Feature/Api/V1/CartTest.php

@@ -1,15 +1,15 @@
 <?php
 
-use App\Models\User;
-use App\Models\Ecommerce\Product\Product\Product;
 use App\Models\Ecommerce\Product\Cart\CartItem;
+use App\Models\Ecommerce\Product\Product\Product;
+use App\Models\User;
 
 beforeEach(function () {
     $this->user = User::factory()->create([
         'password' => 'password',
         'phone_number' => 61929248,
     ]);
-    
+
     // Helper to create product with stock
     $this->createProductWithStock = function ($stock = 10) {
         // Since we don't have factories for Channel/Inventory, and the Controller logic
@@ -17,10 +17,10 @@ beforeEach(function () {
         // (based on CartController::index logic: if ($cartItem->product->stock < ...)),
         // we can just create a product with the stock attribute.
         // If Product factory doesn't exist, we'll create it manually.
-        
+
         return Product::create([
             'name' => 'Test Product',
-            'slug' => 'test-product-' . uniqid(),
+            'slug' => 'test-product-'.uniqid(),
             'stock' => $stock,
             'price_amount' => 100,
             'is_visible' => true,
@@ -50,7 +50,7 @@ test('authenticated user can store item in cart', function () {
         ->withHeaders(['Api-Token' => config('ecommerce.api.token')])
         ->postJson('/api/v1/carts', [
             'product_id' => $product->id,
-            'product_quantity' => 2
+            'product_quantity' => 2,
         ]);
 
     $response->assertStatus(201);
@@ -58,18 +58,18 @@ test('authenticated user can store item in cart', function () {
     $this->assertDatabaseHas('cart_items', [
         'user_id' => $this->user->id,
         'product_id' => $product->id,
-        'product_quantity' => 2
+        'product_quantity' => 2,
     ]);
 });
 
 test('storing item updates quantity if already in cart', function () {
     $product = ($this->createProductWithStock)(10);
-    
+
     // Initial add
     CartItem::create([
         'user_id' => $this->user->id,
         'product_id' => $product->id,
-        'product_quantity' => 1
+        'product_quantity' => 1,
     ]);
 
     // Update quantity
@@ -77,7 +77,7 @@ test('storing item updates quantity if already in cart', function () {
         ->withHeaders(['Api-Token' => config('ecommerce.api.token')])
         ->postJson('/api/v1/carts', [
             'product_id' => $product->id,
-            'product_quantity' => 5
+            'product_quantity' => 5,
         ]);
 
     $response->assertStatus(201);
@@ -85,7 +85,7 @@ test('storing item updates quantity if already in cart', function () {
     $this->assertDatabaseHas('cart_items', [
         'user_id' => $this->user->id,
         'product_id' => $product->id,
-        'product_quantity' => 5 // Should update to new quantity, not add
+        'product_quantity' => 5, // Should update to new quantity, not add
     ]);
 });
 
@@ -94,10 +94,10 @@ test('cart validation fails if product does not exist', function () {
         ->withHeaders(['Api-Token' => config('ecommerce.api.token')])
         ->postJson('/api/v1/carts', [
             'product_id' => 99999,
-            'product_quantity' => 1
+            'product_quantity' => 1,
         ]);
 
-    // Expecting validation error. 
+    // Expecting validation error.
     // Note: The custom rule ProductStockIsAvailable might handle existence check or it might fail before that.
     // The request doesn't use 'exists' rule explicitly but checks stock.
     $response->assertStatus(422)
@@ -111,7 +111,7 @@ test('cart validation fails if quantity is invalid', function () {
         ->withHeaders(['Api-Token' => config('ecommerce.api.token')])
         ->postJson('/api/v1/carts', [
             'product_id' => $product->id,
-            'product_quantity' => 0 // Min is 1
+            'product_quantity' => 0, // Min is 1
         ]);
 
     $response->assertStatus(422)
@@ -125,7 +125,7 @@ test('cart validation fails if stock is insufficient', function () {
         ->withHeaders(['Api-Token' => config('ecommerce.api.token')])
         ->postJson('/api/v1/carts', [
             'product_id' => $product->id,
-            'product_quantity' => 10
+            'product_quantity' => 10,
         ]);
 
     $response->assertStatus(422)
@@ -153,8 +153,8 @@ test('authenticated user can list cart items', function () {
                     'product_id',
                     'product_quantity',
                     'product',
-                ]
-            ]
+                ],
+            ],
         ]);
 });
 
@@ -170,12 +170,12 @@ test('index adjusts quantity if stock decreased', function () {
         ->getJson('/api/v1/carts');
 
     $response->assertStatus(200);
-    
+
     // Check DB
     $this->assertDatabaseHas('cart_items', [
         'user_id' => $this->user->id,
         'product_id' => $product->id,
-        'product_quantity' => 5
+        'product_quantity' => 5,
     ]);
 });
 
@@ -192,7 +192,7 @@ test('index removes item if out of stock', function () {
 
     $response->assertStatus(200)
         ->assertJsonCount(0, 'data');
-    
+
     // Check DB
     $this->assertDatabaseMissing('cart_items', [
         'user_id' => $this->user->id,
@@ -207,14 +207,14 @@ test('authenticated user can remove specific item from cart', function () {
     $response = $this->actingAs($this->user, 'sanctum')
         ->withHeaders(['Api-Token' => config('ecommerce.api.token')])
         ->patchJson('/api/v1/carts', [
-            'product_id' => $product->id
+            'product_id' => $product->id,
         ]);
 
     $response->assertStatus(200);
 
     $this->assertDatabaseMissing('cart_items', [
         'user_id' => $this->user->id,
-        'product_id' => $product->id
+        'product_id' => $product->id,
     ]);
 });