更新前后端代码

go/internal/middleware/site.go

@@ -0,0 +1,42 @@
+package middleware
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"filestoragesystem/internal/service"
+	"filestoragesystem/internal/utils"
+)
+
+// SiteStatus 站点状态中间件
+// 站点关闭(维护模式)时：放行状态接口/登录接口/管理员请求，其余返回503
+func SiteStatus(adminSvc *service.AdminService) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if adminSvc.IsSiteEnabled() {
+			c.Next()
+			return
+		}
+
+		// 放行的路径
+		path := c.Request.URL.Path
+		if path == "/api/v1/status" || path == "/api/v1/auth/login" {
+			c.Next()
+			return
+		}
+
+		// 已认证的管理员放行(需在Auth之后挂载)
+		if IsAdmin(c) {
+			c.Next()
+			return
+		}
+
+		msg := "系统维护中，请稍后再访问"
+		if m, ok := adminSvc.SiteStatus()["maintenance_msg"].(string); ok && m != "" {
+			msg = m
+		}
+		c.AbortWithStatusJSON(http.StatusServiceUnavailable, utils.Response{
+			Code: http.StatusServiceUnavailable, Message: msg,
+		})
+	}
+}