feat: 更新商城前后端代码

mengyastore-backend-go/internal/handlers/admin_product.go

@@ -1,11 +1,13 @@
 package handlers
 
 import (
+	"log"
 	"net/http"
 	"strings"
 
 	"github.com/gin-gonic/gin"
 
+	"mengyastore-backend/internal/cache"
 	"mengyastore-backend/internal/models"
 )
 
@@ -30,7 +32,19 @@ type togglePayload struct {
 	Active bool `json:"active"`
 }
 
-// VerifyAdminToken 验证管理员令牌是否正确，返回 {"valid": true/false}，不暴露实际令牌值。
+// invalidateProductCache removes the cached product list so that the next
+// public request rebuilds it from the freshest DB state (Write-Invalidate).
+func (h *AdminHandler) invalidateProductCache(c *gin.Context) {
+	if h.cache == nil {
+		return
+	}
+	if err := h.cache.Del(c.Request.Context(), cache.KeyProductList); err != nil {
+		log.Printf("[cache] DEL %s error: %v", cache.KeyProductList, err)
+	}
+}
+
+// VerifyAdminToken checks whether the supplied token is correct.
+// Returns {"valid": true/false} without leaking the real token value.
 func (h *AdminHandler) VerifyAdminToken(c *gin.Context) {
 	var payload struct {
 		Token string `json:"token"`
@@ -84,7 +98,7 @@ func (h *AdminHandler) CreateProduct(c *gin.Context) {
 		Active:         active,
 		RequireLogin:   payload.RequireLogin,
 		MaxPerAccount:  payload.MaxPerAccount,
-		DeliveryMode:   payload.DeliveryMode,
+		DeliveryMode:   "auto",
 		ShowNote:       payload.ShowNote,
 		ShowContact:    payload.ShowContact,
 	}
@@ -93,6 +107,7 @@ func (h *AdminHandler) CreateProduct(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	h.invalidateProductCache(c) // Write-Invalidate: clear stale cache
 	c.JSON(http.StatusOK, gin.H{"data": created})
 }
 
@@ -127,7 +142,7 @@ func (h *AdminHandler) UpdateProduct(c *gin.Context) {
 		Active:         active,
 		RequireLogin:   payload.RequireLogin,
 		MaxPerAccount:  payload.MaxPerAccount,
-		DeliveryMode:   payload.DeliveryMode,
+		DeliveryMode:   "auto",
 		ShowNote:       payload.ShowNote,
 		ShowContact:    payload.ShowContact,
 	}
@@ -136,6 +151,7 @@ func (h *AdminHandler) UpdateProduct(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 		return
 	}
+	h.invalidateProductCache(c)
 	c.JSON(http.StatusOK, gin.H{"data": updated})
 }
 
@@ -154,6 +170,7 @@ func (h *AdminHandler) ToggleProduct(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 		return
 	}
+	h.invalidateProductCache(c)
 	c.JSON(http.StatusOK, gin.H{"data": updated})
 }
 
@@ -166,6 +183,7 @@ func (h *AdminHandler) DeleteProduct(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	h.invalidateProductCache(c)
 	c.JSON(http.StatusOK, gin.H{"data": gin.H{"ok": true}})
 }