feat: configurable traffic threshold and Feishu bot alerts

backend/internal/api/alerts.go

@@ -0,0 +1,52 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"vpn-platform/backend/internal/alertnotify"
+	"vpn-platform/backend/internal/store"
+)
+
+func (s *Server) getAlertSettings(c *gin.Context) {
+	status, err := alertnotify.Get()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "读取告警配置失败"})
+		return
+	}
+	c.JSON(http.StatusOK, status)
+}
+
+func (s *Server) saveAlertSettings(c *gin.Context) {
+	var req alertnotify.Input
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数格式错误"})
+		return
+	}
+	status, err := alertnotify.Save(req)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	store.Audit(c.GetString("username"), "update_alert_settings", "traffic", "告警设置已更新")
+	c.JSON(http.StatusOK, status)
+}
+
+func (s *Server) testAlertSettings(c *gin.Context) {
+	if err := alertnotify.Test(); err != nil {
+		c.JSON(http.StatusBadGateway, gin.H{"error": "飞书试发失败：" + err.Error()})
+		return
+	}
+	store.Audit(c.GetString("username"), "test_alert_notification", "feishu", "测试消息发送成功")
+	c.JSON(http.StatusOK, gin.H{"ok": true})
+}
+
+func (s *Server) clearAlertSettings(c *gin.Context) {
+	status, err := alertnotify.Clear()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "清除告警配置失败"})
+		return
+	}
+	store.Audit(c.GetString("username"), "clear_alert_settings", "traffic", "群机器人凭据已清除")
+	c.JSON(http.StatusOK, status)
+}

backend/internal/api/api.go

@@ -310,6 +310,10 @@ func (s *Server) RegisterRoutes(r *gin.Engine) {
 		admin.Use(requireRole("admin"))
 		// 主机环境体检与一键初始化（仅 admin）
 		admin.GET("/system/env", s.systemEnv)
+		admin.GET("/system/alerts", s.getAlertSettings)
+		admin.PUT("/system/alerts", s.saveAlertSettings)
+		admin.DELETE("/system/alerts", s.clearAlertSettings)
+		admin.POST("/system/alerts/test", s.testAlertSettings)
 		admin.POST("/system/fix", s.systemFix)
 		admin.GET("/system/tls", s.tlsStatus)
 		admin.GET("/system/identity", idp.Status)