From 18a65de8c73bb04c9275a539118eedbf504850fd Mon Sep 17 00:00:00 2001
From: masoodafar-web <masoud.afarin.moghaddam@outlook.com>
Date: Mon, 16 Feb 2026 21:52:02 +0330
Subject: [PATCH] =?UTF-8?q?fix:=20force=20100%=20discount=20in=20PlaceOrde?=
 =?UTF-8?q?r=20=E2=80=94=20ignore=20client=20DiscountBalanceToUse,=20alway?=
 =?UTF-8?q?s=20use=20max?=
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Content-Type: text/plain; charset=UTF-8
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---
 .../PlaceOrder/PlaceOrderCommandHandler.cs       | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/src/CMSMicroservice.Application/DiscountShopCQ/Commands/PlaceOrder/PlaceOrderCommandHandler.cs b/src/CMSMicroservice.Application/DiscountShopCQ/Commands/PlaceOrder/PlaceOrderCommandHandler.cs
index ec85a20..58bb737 100644
--- a/src/CMSMicroservice.Application/DiscountShopCQ/Commands/PlaceOrder/PlaceOrderCommandHandler.cs
+++ b/src/CMSMicroservice.Application/DiscountShopCQ/Commands/PlaceOrder/PlaceOrderCommandHandler.cs
@@ -109,19 +109,13 @@ public class PlaceOrderCommandHandler : IRequestHandler<PlaceOrderCommand, Place
             });
         }
 
-        // Validate discount balance usage
+        // Always apply maximum possible discount (100%) — user cannot choose less
         var maxDiscountBalanceUsable = totalDiscountAmount;
-        var actualDiscountBalanceUsed = Math.Min(request.DiscountBalanceToUse, maxDiscountBalanceUsable);
-        actualDiscountBalanceUsed = Math.Min(actualDiscountBalanceUsed, userWallet.DiscountBalance);
+        var actualDiscountBalanceUsed = Math.Min(maxDiscountBalanceUsable, userWallet.DiscountBalance);
 
-        if (actualDiscountBalanceUsed < request.DiscountBalanceToUse)
-        {
-            return new PlaceOrderResponseDto
-            {
-                Success = false,
-                Message = $"موجودی تخفیف کافی نیست. حداکثر قابل استفاده: {maxDiscountBalanceUsable:N0} تومان، موجودی شما: {userWallet.DiscountBalance:N0} تومان"
-            };
-        }
+        _logger.LogInformation(
+            "Discount auto-applied: max allowed={MaxAllowed}, wallet balance={WalletBalance}, used={Used}",
+            maxDiscountBalanceUsable, userWallet.DiscountBalance, actualDiscountBalanceUsed);
 
         var gatewayAmountRequired = totalAmount - actualDiscountBalanceUsed;