some more refactoring

auth/auth.go

@@ -164,11 +164,11 @@ func listBackends(c *gin.Context) {
 }
 
 func disabled(c *gin.Context) {
+	code := http.StatusBadRequest
 	if c.Param("path") == "/backends" {
-		c.JSON(http.StatusNotFound, HTTPErrorResponse{"authentication is disabled"})
-		return
+		code = http.StatusNotFound
 	}
-	c.JSON(http.StatusBadRequest, HTTPErrorResponse{"authentication is disabled"})
+	c.JSON(code, HTTPErrorResponse{"authentication is disabled"})
 }
 
 func InstallHTTPHandler(r *gin.RouterGroup) {
@@ -177,15 +177,18 @@ func InstallHTTPHandler(r *gin.RouterGroup) {
 		return
 	}
 
-	r.GET("/backends", listBackends)
+	backends := r.Group("/backends")
+	backends.GET("", listBackends)
 
-	r.POST("/session", newSession)
-	r.GET("/session", getSession)
-	r.DELETE("/session", deleteSession)
+	session := r.Group("/session")
+	session.POST("", newSession)
+	session.GET("", getSession)
+	session.DELETE("", deleteSession)
 
 	if auth.oidc != nil {
-		r.GET("/oidc/login", auth.oidc.Login)
-		r.GET("/oidc/callback", auth.oidc.Callback)
+		oidc := r.Group("/oidc")
+		oidc.GET("login", auth.oidc.Login)
+		oidc.GET("callback", auth.oidc.Callback)
 	}
 }