Improved OrderPaymentChecker

modules/EasyAbp.EShop.Orders/src/EasyAbp.EShop.Orders.Domain/EasyAbp/EShop/Orders/Orders/IOrderPaymentChecker.cs

@@ -5,6 +5,6 @@ namespace EasyAbp.EShop.Orders.Orders
 {
     public interface IOrderPaymentChecker
     {
-        Task<bool> IsValidPaymentAsync(Order order, PaymentEto paymentEto);
+        Task<bool> IsValidPaymentAsync(Order order, PaymentEto payment, PaymentItemEto paymentItem);
     }
 }

modules/EasyAbp.EShop.Orders/src/EasyAbp.EShop.Orders.Domain/EasyAbp/EShop/Orders/Orders/OrderPaymentChecker.cs

@@ -8,12 +8,27 @@ namespace EasyAbp.EShop.Orders.Orders
 {
     public class OrderPaymentChecker : IOrderPaymentChecker, ITransientDependency
     {
-        public Task<bool> IsValidPaymentAsync(Order order, PaymentEto paymentEto)
+        public virtual async Task<bool> IsValidPaymentAsync(Order order, PaymentEto payment, PaymentItemEto paymentItem)
         {
-            return Task.FromResult(
-                Guid.TryParse(paymentEto.GetProperty<string>("StoreId"), out var paymentStoreId) &&
-                order.StoreId == paymentStoreId
-            );
+            return await IsStoreIdCorrectAsync(order, payment) &&
+                   await IsPaymentPriceCorrectAsync(order, paymentItem) &&
+                   await IsUserAllowedToPayAsync(order, payment);
+        }
+        
+        protected virtual Task<bool> IsStoreIdCorrectAsync(Order order, PaymentEto payment)
+        {
+            return Task.FromResult(Guid.TryParse(payment.GetProperty<string>("StoreId"), out var paymentStoreId) &&
+                                   order.StoreId == paymentStoreId);
+        }
+        
+        protected virtual Task<bool> IsPaymentPriceCorrectAsync(Order order, PaymentItemEto paymentItem)
+        {
+            return Task.FromResult(order.TotalPrice == paymentItem.OriginalPaymentAmount);
+        }
+
+        protected virtual Task<bool> IsUserAllowedToPayAsync(Order order, PaymentEto payment)
+        {
+            return Task.FromResult(order.CustomerUserId == payment.UserId);
         }
     }
 }

modules/EasyAbp.EShop.Orders/src/EasyAbp.EShop.Orders.Domain/EasyAbp/EShop/Orders/Orders/OrderPaymentCompletedEventHandler.cs

@@ -43,7 +43,7 @@ namespace EasyAbp.EShop.Orders.Orders
                 var order = await _orderRepository.FindAsync(item.ItemKey);
 
                 if (order == null || order.PaidTime.HasValue ||
-                    !await _orderPaymentChecker.IsValidPaymentAsync(order, eventData.Entity))
+                    !await _orderPaymentChecker.IsValidPaymentAsync(order, eventData.Entity, item))
                 {
                     continue;
                 }

modules/EasyAbp.EShop.Orders/src/EasyAbp.EShop.Orders.Domain/EasyAbp/EShop/Orders/Orders/OrderPaymentCreatedEventHandler.cs

@@ -34,7 +34,7 @@ namespace EasyAbp.EShop.Orders.Orders
                 var order = await _orderRepository.FindAsync(item.ItemKey);
 
                 if (order == null || order.PaymentId.HasValue ||
-                    !await _orderPaymentChecker.IsValidPaymentAsync(order, eventData.Entity))
+                    !await _orderPaymentChecker.IsValidPaymentAsync(order, eventData.Entity, item))
                 {
                     continue;
                 }