Fix order and payment history

demo/ChengFenStore/Models/Order.cs

@@ -8,5 +8,10 @@ public class Order
         public string DeliveryMethod { get; set; }
         public string OrderStatus { get; set; }
         public List<OrderStatus> OrderStatusHistory { get; set; }
+
+        public Order()
+        {
+            OrderStatusHistory = new List<OrderStatus>();
+        }
     }
 }

demo/ChengFenStore/Models/Payment.cs

@@ -7,5 +7,10 @@ public class Payment
         public string PaymentMethod { get; set; }
         public string PaymentStatus { get; set; }
         public List<PaymentStatus> PaymentStatusHistory { get; set; }
+
+        public Payment()
+        {
+            PaymentStatusHistory = new List<PaymentStatus>();
+        }
     }
 }

demo/ChengFenStore/Services/OrderService.cs

@@ -32,6 +32,7 @@ public Order ConfirmOrder(int id)
                 order.OrderStatus = "已支付";
                 _context.Orders.Update(order);
                 _context.SaveChanges();
+                UpdateOrderStatusHistory(order.OrderId, "已支付");
             }
             return order;
         }
@@ -40,5 +41,23 @@ public Order TrackOrder(int id)
         {
             return _context.Orders.FirstOrDefault(o => o.OrderId == id);
         }
+
+        private void UpdateOrderStatusHistory(int orderId, string status)
+        {
+            var orderStatus = new OrderStatus
+            {
+                OrderId = orderId,
+                Status = status,
+                Timestamp = DateTime.Now
+            };
+
+            var order = _context.Orders.FirstOrDefault(o => o.OrderId == orderId);
+            if (order != null)
+            {
+                order.OrderStatusHistory.Add(orderStatus);
+                _context.Orders.Update(order);
+                _context.SaveChanges();
+            }
+        }
     }
 }

demo/ChengFenStore/Services/PaymentService.cs

@@ -19,12 +19,31 @@ public bool ProcessPayment(Payment payment)
             payment.PaymentStatus = "Processed";
             _context.Payments.Add(payment);
             _context.SaveChanges();
+            UpdatePaymentStatusHistory(payment.PaymentId, "Processed");
             return true;
         }
 
         public List<Payment> GetPaymentRecords()
         {
             return _context.Payments.ToList();
         }
+
+        private void UpdatePaymentStatusHistory(int paymentId, string status)
+        {
+            var paymentStatus = new PaymentStatus
+            {
+                PaymentId = paymentId,
+                Status = status,
+                Timestamp = DateTime.Now
+            };
+
+            var payment = _context.Payments.FirstOrDefault(p => p.PaymentId == paymentId);
+            if (payment != null)
+            {
+                payment.PaymentStatusHistory.Add(paymentStatus);
+                _context.Payments.Update(payment);
+                _context.SaveChanges();
+            }
+        }
     }
 }