fix: remove discount balance UI entirely — 100% discount auto-applied by server

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

@@ -52,55 +52,6 @@
                 }
             </MudPaper>
 
-            <!-- Discount Balance (Auto Applied) -->
-            <MudPaper Elevation="2" Class="pa-4 rounded-lg mb-3">
-                <MudStack Row="true" Spacing="2" AlignItems="AlignItems.Center" Class="mb-3">
-                    <MudIcon Icon="@Icons.Material.Filled.Loyalty" Color="Color.Secondary" />
-                    <MudText Typo="Typo.h6">تخفیف کیف تخفیفی</MudText>
-                </MudStack>
-
-                <MudStack Spacing="2">
-                    <MudStack Row="true" Justify="Justify.SpaceBetween" AlignItems="AlignItems.Center" Class="flex-wrap">
-                        <MudText Typo="Typo.body2">موجودی کیف تخفیفی شما:</MudText>
-                        <MudText Typo="Typo.subtitle1" Color="Color.Secondary" Class="fw-bold">
-                            @FormatPrice(_discountBalance) تومان
-                        </MudText>
-                    </MudStack>
-
-                    @if (MaxUsable > 0)
-                    {
-                        <MudAlert Severity="Severity.Success" Variant="Variant.Outlined" Dense="true">
-                            <MudStack Row="true" Justify="Justify.SpaceBetween" AlignItems="AlignItems.Center" Class="flex-wrap">
-                                <MudText Typo="Typo.body2">مبلغ تخفیف اعمال‌شده:</MudText>
-                                <MudText Typo="Typo.subtitle1" Color="Color.Success" Class="fw-bold">
-                                    @FormatPrice(MaxUsable) تومان
-                                </MudText>
-                            </MudStack>
-                        </MudAlert>
-
-                        @if (GatewayAmount > 0)
-                        {
-                            <MudAlert Severity="Severity.Info" Variant="Variant.Outlined" Dense="true">
-                                مبلغ @FormatPrice(MaxUsable) تومان از کیف تخفیفی کسر و
-                                مبلغ @FormatPrice(GatewayAmount) تومان از درگاه پرداخت دریافت خواهد شد.
-                            </MudAlert>
-                        }
-                        else
-                        {
-                            <MudAlert Severity="Severity.Success" Variant="Variant.Outlined" Dense="true">
-                                کل مبلغ سفارش از کیف تخفیفی پرداخت خواهد شد.
-                            </MudAlert>
-                        }
-                    }
-                    else
-                    {
-                        <MudAlert Severity="Severity.Warning" Variant="Variant.Outlined" Dense="true">
-                            موجودی کیف تخفیفی شما کافی نیست. کل مبلغ از درگاه پرداخت دریافت خواهد شد.
-                        </MudAlert>
-                    }
-                </MudStack>
-            </MudPaper>
-
             <!-- Notes -->
             <MudPaper Elevation="2" Class="pa-4 rounded-lg">
                 <MudText Typo="Typo.h6" Class="mb-2">توضیحات سفارش</MudText>
@@ -149,30 +100,15 @@
 
                     <MudStack Spacing="1">
                         <MudStack Row="true" Justify="Justify.SpaceBetween">
-                            <MudText Typo="Typo.body2">جمع کل:</MudText>
+                            <MudText Typo="Typo.subtitle1" Class="fw-bold">جمع کل:</MudText>
-                            <MudText Typo="Typo.body2">@FormatPrice(DiscountCart.TotalPrice)</MudText>
-                        </MudStack>
-
-                        @if (MaxUsable > 0)
-                        {
-                            <MudStack Row="true" Justify="Justify.SpaceBetween">
-                                <MudText Typo="Typo.body2" Color="Color.Success">از کیف تخفیفی:</MudText>
-                                <MudText Typo="Typo.body2" Color="Color.Success">@FormatPrice(MaxUsable)-</MudText>
-                            </MudStack>
-                        }
-
-                        <MudDivider Class="my-1" />
-
-                        <MudStack Row="true" Justify="Justify.SpaceBetween">
-                            <MudText Typo="Typo.subtitle1" Class="fw-bold">پرداخت از درگاه:</MudText>
                             <MudText Typo="Typo.subtitle1" Color="Color.Primary" Class="fw-bold">
-                                @FormatPrice(GatewayAmount) تومان
+                                @FormatPrice(DiscountCart.TotalPrice) تومان
                             </MudText>
                         </MudStack>
 
-                        <MudText Typo="Typo.caption" Class="mud-text-secondary">
+                        <MudAlert Severity="Severity.Success" Variant="Variant.Text" Dense="true" Class="mt-1">
-                            مالیات بر ارزش افزوده صرفاً بر مبلغ درگاه محاسبه خواهد شد.
+                            تخفیف ۱۰۰٪ از کیف تخفیفی اعمال می‌شود.
-                        </MudText>
+                        </MudAlert>
                     </MudStack>
 
                     <MudButton Disabled="@(!CanPlaceOrder || _placing)" Class="mt-3 w-100-mobile"

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

@@ -15,48 +15,15 @@ public partial class Checkout
     private CustomerAddressModel? _selectedAddress;
     private bool _loadingAddresses;
 
-    private long _discountBalance;
     private string? _notes;
     private bool _placing;
 
-    /// <summary>
-    /// Maximum discount allowed based on cart items' MaxDiscountPercent
-    /// </summary>
-    private long MaxAllowedDiscount => DiscountCart.TotalDiscount;
-
-    /// <summary>
-    /// Maximum the user can actually use = min(balance, allowed discount)
-    /// Always applied at 100% — no user selection
-    /// </summary>
-    private long MaxUsable => Math.Min(_discountBalance, MaxAllowedDiscount);
-
-    /// <summary>
-    /// Amount to be charged via payment gateway (total minus auto-applied discount)
-    /// </summary>
-    private long GatewayAmount => DiscountCart.TotalPrice - MaxUsable;
-
     private bool CanPlaceOrder => DiscountCart.Items.Count > 0 && _selectedAddress is not null;
 
     protected override async Task OnInitializedAsync()
     {
         await DiscountCart.EnsureInitializedAsync();
-
+        await LoadAddresses();
-        var addressTask = LoadAddresses();
-        var balanceTask = LoadDiscountBalance();
-        await Task.WhenAll(addressTask, balanceTask);
-    }
-
-    private async Task LoadDiscountBalance()
-    {
-        try
-        {
-            var balances = await WalletService.GetBalancesAsync();
-            _discountBalance = balances.DiscountBalance;
-        }
-        catch
-        {
-            _discountBalance = 0;
-        }
     }
 
     private async Task LoadAddresses()
@@ -98,10 +65,10 @@ public partial class Checkout
         _placing = true;
         try
         {
-            // Always use maximum possible discount (100%)
+            // Always use 100% discount — send full price, server will apply max from wallet
             var result = await DiscountOrderService.PlaceOrderAsync(
                 _selectedAddress.Id,
-                MaxUsable,
+                DiscountCart.TotalPrice,
                 _notes);
 
             if (!result.Success)