优化页面、修复BUG

server/utils/visitor.go

@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+)
+
+// GetOrSetVisitorID returns an anonymous visitor identifier from cookie, creating one if missing.
+func GetOrSetVisitorID(c *gin.Context) string {
+	if cookie, err := c.Cookie("visitor_id"); err == nil && cookie != "" {
+		return cookie
+	}
+
+	id := uuid.New().String()
+	c.SetCookie("visitor_id", id, 365*24*3600, "/", "", false, true)
+	return id
+}