u

src/FrontOffice.Main/Pages/Checkout.razor.cs

@@ -33,6 +33,10 @@ public partial class Checkout
     private long _discountAmount;
     private long _finalPrice;
 
+    // Address management
+    private bool _isSettingDefaultAddress;
+    private long? _settingDefaultAddressId;
+
     private bool CanProceedToPayment => _selectedPackage != null && _selectedAddress != null;
 
     protected override async Task OnInitializedAsync()
@@ -96,14 +100,13 @@ public partial class Checkout
         }
     }
 
-    private void SelectAddress(GetAllUserAddressByFilterResponseModel address)
-    {
-        _selectedAddress = address;
-        StateHasChanged();
-    }
-
     private async Task SetAddressAsDefault(long addressId)
     {
+        if (_isSettingDefaultAddress) return;
+
+        _isSettingDefaultAddress = true;
+        _settingDefaultAddressId = addressId;
+
         try
         {
             await UserAddressContract.SetAddressAsDefaultAsync(new() { Id = addressId });
@@ -114,6 +117,12 @@ public partial class Checkout
         {
             Snackbar.Add($"خطا در تغییر آدرس پیش‌فرض: {ex.Message}", Severity.Error);
         }
+        finally
+        {
+            _isSettingDefaultAddress = false;
+            _settingDefaultAddressId = null;
+            await InvokeAsync(StateHasChanged);
+        }
     }
 
     private async Task ApplyDiscountCode()
@@ -163,6 +172,9 @@ public partial class Checkout
 
     private async Task ProcessPayment()
     {
+        Snackbar.Add("درگاه پرداخت متصل نیست! لطفا در زمان دیگری مجددا تلاش فرمایید!", Severity.Warning);
+        return;
+
         if (!CanProceedToPayment || _selectedPackage == null || _selectedAddress == null)
         {
             Snackbar.Add("لطفاً پکیج و آدرس را انتخاب کنید.", Severity.Warning);
@@ -186,9 +198,7 @@ public partial class Checkout
             var paymentResponse = await TransactionContract.PaymentRequestAsync(paymentRequest);
 
             if (string.IsNullOrEmpty(paymentResponse.PaymentGWUrl))
-            {
-                throw new Exception("آدرس درگاه پرداخت دریافت نشد.");
-            }
+                Snackbar.Add("آدرس درگاه پرداخت دریافت نشد.", Severity.Error);
 
             // Step 2: Create user order
             var orderRequest = new CreateNewUserOrderRequest