feat: show VAT breakdown on discount checkout — discount, net, 9% VAT, final amount

2026-02-16 22:22:07 +03:30
parent f60b007fdd
commit 0df5d6a595
2 changed files with 36 additions and 7 deletions
@@ -18,6 +18,17 @@ public partial class Checkout
    private string? _notes;
    private bool _placing;

+    private const decimal VAT_RATE = 0.09m;
+
+    /// <summary>مبلغ درگاه قبل از مالیات (جمع کل - تخفیف)</summary>
+    private long NetGatewayAmount => DiscountCart.TotalPrice - DiscountCart.TotalDiscount;
+
+    /// <summary>مالیات بر ارزش افزوده ۹٪</summary>
+    private long VatAmount => (long)(NetGatewayAmount * VAT_RATE);
+
+    /// <summary>مبلغ نهایی قابل پرداخت (شامل VAT)</summary>
+    private long FinalGatewayAmount => NetGatewayAmount + VatAmount;
+
    private bool CanPlaceOrder => DiscountCart.Items.Count > 0 && _selectedAddress is not null;

    protected override async Task OnInitializedAsync()