feat: able to manage system vai access token (close #12)

router/api-router.go

@@ -35,6 +35,7 @@ func SetApiRouter(router *gin.Engine) {
 				selfRoute.GET("/self", controller.GetSelf)
 				selfRoute.PUT("/self", controller.UpdateSelf)
 				selfRoute.DELETE("/self", controller.DeleteSelf)
+				selfRoute.GET("/token", controller.GenerateAccessToken)
 			}
 
 			adminRoute := userRoute.Group("/")