/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package route

import (
	"github.com/go-chassis/go-chassis/core/config/model"
	"github.com/go-chassis/go-chassis/core/router"
)

//Rules is the struct for route rule
type Rules struct {
	Destinations map[string][]*model.RouteRule `yaml:"routeRule"`
}

var routeRules *Rules

//GetRouteRules gets all route rules
func GetRouteRules() *Rules {
	if routeRules != nil {
		return routeRules
	}
	routeRules = new(Rules)
	routeRules.Destinations = router.DefaultRouter.FetchRouteRule()
	return routeRules
}

//GetServiceRouteRule gets route rule for that service
func GetServiceRouteRule(serviceName string) []*model.RouteRule {
	routeRules := GetRouteRules()
	routeRule, ok := routeRules.Destinations[serviceName]
	if !ok {
		return nil
	}
	return routeRule
}