feat: 订单自动过期-查看时检查并取消超时订单，收银台倒计时结束自动取消

backend/internal/api/handlers/order.go

@@ -4,6 +4,7 @@ import (
 	"math"
 	"net/http"
 	"strconv"
+	"time"
 
 	"sale/internal/models"
 	"sale/internal/schemas"
@@ -91,6 +92,41 @@ func NewOrderHandler() *OrderHandler {
 	return &OrderHandler{}
 }
 
+func checkOrderExpired(order *models.Order) {
+	if order.Status != models.OrderStatusPendingPayment || order.PaymentExpiresAt == nil {
+		return
+	}
+	if time.Now().After(*order.PaymentExpiresAt) {
+		tx := utils.DB.Begin()
+		tx.Model(order).Update("status", models.OrderStatusCancelled)
+		for _, item := range order.OrderItems {
+			var inventory models.Inventory
+			if err := tx.Where("product_id = ?", item.ProductID).First(&inventory).Error; err == nil {
+				tx.Model(&inventory).UpdateColumn("quantity", inventory.Quantity+item.Quantity)
+			}
+			var product models.Product
+			if err := tx.First(&product, item.ProductID).Error; err == nil {
+				if product.RequireCredit {
+					tx.Model(&models.User{}).Where("id = ?", order.UserID).
+						UpdateColumn("purchase_credits", utils.DB.Raw("purchase_credits + ?", product.CreditCost*item.Quantity))
+				}
+				if product.CreditReward > 0 {
+					tx.Model(&models.User{}).Where("id = ?", order.UserID).
+						UpdateColumn("purchase_credits", utils.DB.Raw("purchase_credits - ?", product.CreditReward*item.Quantity))
+				}
+			}
+		}
+		tx.Commit()
+		order.Status = models.OrderStatusCancelled
+	}
+}
+
+func checkOrdersExpired(orders []models.Order) {
+	for i := range orders {
+		checkOrderExpired(&orders[i])
+	}
+}
+
 func (h *OrderHandler) List(c *gin.Context) {
 	userID := c.GetUint("user_id")
 	role, _ := c.Get("role")
@@ -107,6 +143,8 @@ func (h *OrderHandler) List(c *gin.Context) {
 	query.Preload("OrderItems.Product").Preload("ShippingAddress").
 		Order("created_at DESC").Find(&orders)
 
+	checkOrdersExpired(orders)
+
 	c.JSON(http.StatusOK, gin.H{"data": orders})
 }
 
@@ -129,6 +167,8 @@ func (h *OrderHandler) GetByID(c *gin.Context) {
 		return
 	}
 
+	checkOrderExpired(&order)
+
 	c.JSON(http.StatusOK, gin.H{"data": order})
 }
 
@@ -400,6 +440,8 @@ func (h *OrderHandler) AdminList(c *gin.Context) {
 	utils.DB.Preload("OrderItems.Product").Preload("ShippingAddress").Preload("User").
 		Order("created_at DESC").Offset(offset).Limit(pageSize).Find(&orders)
 
+	checkOrdersExpired(orders)
+
 	totalPages := int(math.Ceil(float64(total) / float64(pageSize)))
 	c.JSON(http.StatusOK, gin.H{
 		"data": orders,

backend/internal/api/handlers/payment.go

@@ -39,7 +39,7 @@ func (h *PaymentHandler) CreatePayment(c *gin.Context) {
 	orderID, _ := strconv.Atoi(c.Param("id"))
 
 	var order models.Order
-	if err := utils.DB.Where("id = ? AND user_id = ?", orderID, userID).First(&order).Error; err != nil {
+	if err := utils.DB.Preload("OrderItems").Where("id = ? AND user_id = ?", orderID, userID).First(&order).Error; err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "Order not found"})
 		return
 	}
@@ -49,6 +49,20 @@ func (h *PaymentHandler) CreatePayment(c *gin.Context) {
 		return
 	}
 
+	if order.PaymentExpiresAt != nil && time.Now().After(*order.PaymentExpiresAt) {
+		tx := utils.DB.Begin()
+		tx.Model(&order).Update("status", models.OrderStatusCancelled)
+		for _, item := range order.OrderItems {
+			var inventory models.Inventory
+			if err := tx.Where("product_id = ?", item.ProductID).First(&inventory).Error; err == nil {
+				tx.Model(&inventory).UpdateColumn("quantity", inventory.Quantity+item.Quantity)
+			}
+		}
+		tx.Commit()
+		c.JSON(http.StatusBadRequest, gin.H{"error": "支付已超时，订单已取消"})
+		return
+	}
+
 	var channels []models.PaymentChannel
 	utils.DB.Where("is_enabled = ? AND type = ?", true, "bepusdt").Order("sort_order ASC").Find(&channels)
 	if len(channels) == 0 {
@@ -169,15 +183,21 @@ func (h *PaymentHandler) CreatePayment(c *gin.Context) {
 	}
 
 	var remainingSeconds int64
+	var expiresAt *time.Time
 	if expiration > 0 {
 		remainingSeconds = expiration - time.Now().Unix()
 		if remainingSeconds < 0 {
 			remainingSeconds = 0
 		}
+		if remainingSeconds > 0 {
+			t := time.Now().Add(time.Duration(remainingSeconds) * time.Second)
+			expiresAt = &t
+		}
 	}
 
 	utils.DB.Model(&order).Updates(map[string]interface{}{
 		"payment_method":      "bepusdt",
+		"payment_expires_at":  expiresAt,
 	})
 
 	paymentInfo := map[string]interface{}{

backend/internal/models/order.go

@@ -25,6 +25,7 @@ type Order struct {
 	ExpressPhoto     string         `gorm:"type:text" json:"express_photo"`
 	CustomsPhoto     string         `gorm:"type:text" json:"customs_photo"`
 	PaymentMethod    string         `gorm:"size:50" json:"payment_method"`
+	PaymentExpiresAt *time.Time     `json:"payment_expires_at,omitempty"`
 	CreatedAt        time.Time      `json:"created_at"`
 	UpdatedAt        time.Time      `json:"updated_at"`
 	DeletedAt        gorm.DeletedAt `gorm:"index" json:"-"`

frontend/src/views/user/Checkout.vue

@@ -78,18 +78,19 @@ const paymentError = ref('')
 const remaining = ref(0)
 const totalTime = ref(0)
 const orderAmount = ref(0)
+const orderId = ref(0)
 let pollTimer: any = null
 let countdownTimer: any = null
 
 async function createPayment() {
   try {
-    const orderId = Number(route.params.id)
-    const res: any = await orderApi.createPayment(orderId)
+    orderId.value = Number(route.params.id)
+    const res: any = await orderApi.createPayment(orderId.value)
     paymentInfo.value = res.data
     totalTime.value = res.data.expiration_time || 600
     remaining.value = totalTime.value
 
-    const orderRes: any = await orderApi.getById(orderId)
+    const orderRes: any = await orderApi.getById(orderId.value)
     orderAmount.value = orderRes.data?.total_amount || 0
 
     if (qrCanvas.value) {
@@ -116,20 +117,22 @@ function startCountdown() {
     if (remaining.value <= 0) {
       clearInterval(countdownTimer)
       clearInterval(pollTimer)
+      orderApi.cancel(orderId.value).catch(() => {})
+      paymentError.value = '支付已超时，订单已取消'
+      paymentInfo.value = null
     }
   }, 1000)
 }
 
 function startPolling() {
-  const orderId = Number(route.params.id)
   pollTimer = setInterval(async () => {
     try {
-      const res: any = await orderApi.checkPaymentStatus(orderId)
+      const res: any = await orderApi.checkPaymentStatus(orderId.value)
       if (res.data?.status === 'pending_confirm' || res.data?.status === 'completed') {
         clearInterval(pollTimer)
         clearInterval(countdownTimer)
         ElMessage.success('支付成功！')
-        setTimeout(() => router.push(`/orders/${orderId}`), 1500)
+        setTimeout(() => router.push(`/orders/${orderId.value}`), 1500)
       }
     } catch {}
   }, 5000)