/**
 * Copyright 2016-2017 ZTE, Inc. and others.
 *
 * Licensed 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 org.onap.msb.sdclient.wrapper;

import org.onap.msb.sdclient.core.AgentService;
import org.onap.msb.sdclient.core.CatalogNode;
import org.onap.msb.sdclient.core.ConsulService;
import org.onap.msb.sdclient.wrapper.util.ConfigUtil;
import org.onap.msb.sdclient.wrapper.util.DiscoverUtil;
import org.onap.msb.sdclient.wrapper.util.HttpClientUtil;
import org.onap.msb.sdclient.wrapper.util.JacksonJsonUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ConsulCatalogServiceWrapper {

    private static ConsulCatalogServiceWrapper instance = new ConsulCatalogServiceWrapper();

    private ConsulCatalogServiceWrapper() {}

    public static ConsulCatalogServiceWrapper getInstance() {
        return instance;
    }

    private static final Logger LOGGER = LoggerFactory.getLogger(ConsulAgentServiceWrapper.class);


    public synchronized int saveService(AgentService agentService) throws Exception {
        String consulRegisterurl =
                        (new StringBuilder().append("http://").append(ConfigUtil.getInstance().getConsulAddress())
                                        .append(DiscoverUtil.CONSUL_CATALOG_URL).append("/register")).toString();

        CatalogNode catalogNode = transformCatalogNode(agentService);


        int registerResult =
                        HttpClientUtil.httpPostWithJSON(consulRegisterurl, JacksonJsonUtil.beanToJson(catalogNode));

        return registerResult;

    }

    public synchronized int deleteService(String serviceId) throws Exception {
        String consulDelurl = (new StringBuilder().append("http://").append(ConfigUtil.getInstance().getConsulAddress())
                        .append(DiscoverUtil.CONSUL_CATALOG_URL).append("/deregister")).toString();

        String nodeJson =
                        "{\"Node\": \"" + DiscoverUtil.EXTERNAL_NODE_NAME + "\",\"ServiceID\": \"" + serviceId + "\"}";

        int delResult = HttpClientUtil.httpPostWithJSON(consulDelurl, nodeJson);

        return delResult;
    }


    private CatalogNode transformCatalogNode(AgentService agentService) {
        ConsulService consulService = new ConsulService();

        consulService.setAddress(agentService.getAddress());
        consulService.setId(agentService.getId());
        consulService.setPort(agentService.getPort());
        consulService.setService(agentService.getName());
        consulService.setTags(agentService.getTags());

        CatalogNode catalogNode = new CatalogNode(consulService);

        return catalogNode;
    }

}