/*
 * 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 nacos

import (
	"sync"
)

import (
	"github.com/nacos-group/nacos-sdk-go/clients"
	"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
	"github.com/nacos-group/nacos-sdk-go/common/constant"
)

var (
	clientPool     nacosClientPool
	clientPoolOnce sync.Once
)

type nacosClientPool struct {
	sync.Mutex
	namingClient map[string]naming_client.INamingClient
}

func initNacosClientPool() {
	clientPool.namingClient = make(map[string]naming_client.INamingClient)
}

// NewNamingClient create nacos client
func NewNamingClient(name string, share bool, sc []constant.ServerConfig,
	cc constant.ClientConfig) (naming_client.INamingClient, error) {
	if share {
		clientPoolOnce.Do(initNacosClientPool)
		clientPool.Lock()
		defer clientPool.Unlock()
		if client, ok := clientPool.namingClient[name]; ok {
			return client, nil
		}
	}
	configMap := make(map[string]interface{}, 2)
	configMap["serverConfigs"] = sc
	configMap["clientConfig"] = cc
	client, err := clients.CreateNamingClient(configMap)
	if share {
		clientPool.namingClient[name] = client
	}
	return client, err
}
