/*******************************************************************************
 * 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.apiroute.wrapper;

import java.util.List;

import org.onap.msb.apiroute.api.IuiRouteInfo;
import org.onap.msb.apiroute.api.exception.ExtendedInternalServerErrorException;
import org.onap.msb.apiroute.api.exception.ExtendedNotFoundException;
import org.onap.msb.apiroute.wrapper.service.IuiRouteService;
import org.onap.msb.apiroute.wrapper.util.RouteUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class IuiRouteServiceWrapper {


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

    private static IuiRouteServiceWrapper instance = new IuiRouteServiceWrapper();

    private IuiRouteServiceWrapper() {}

    public static IuiRouteServiceWrapper getInstance() {
        return instance;
    }



    /**
     * @Title: getAllIuiRouteService
     * @Description: TODO(get All IuiRouteServices)
     * @param: @return
     * @return: IuiRouteInfo[]
     */
    public List<IuiRouteInfo> getAllIuiRouteInstances(String routeWay) {

        RouteUtil.checkRouteWay(routeWay);

        try {
            String iuiRedisKey = RouteUtil.getMutiRedisKey(RouteUtil.IUIROUTE, routeWay);

            return IuiRouteService.getInstance().getMultiIuiRouteInstances(iuiRedisKey);

        } catch (Exception e) {
            throw new ExtendedInternalServerErrorException(e.getMessage());
        }


    }



    /**
     * @Title: getIuiRouteInstance
     * @Description: TODO(get one IuiRouteInstance by serviceName)
     * @param: @param serviceName
     * @param: @return
     * @return: IuiRouteInfo
     */
    public IuiRouteInfo getIuiRouteInstance(String serviceName, String host, String publish_port, String routeWay) {

        RouteUtil.checkRouteWay(routeWay);

        String iuiRedisPrefixedKey =
                        RouteUtil.getRedisPrefixedKey(RouteUtil.IUIROUTE, serviceName, host, publish_port, routeWay);

        IuiRouteInfo iuiRouteInfo;
        try {
            iuiRouteInfo = IuiRouteService.getInstance().getIuiRouteInstance(iuiRedisPrefixedKey);
        } catch (Exception e) {
            LOGGER.error("get IuiRouteInstance throw exception", e);
            throw new ExtendedInternalServerErrorException("get IuiRouteInstance throw exception" + e.getMessage());
        }



        if (null == iuiRouteInfo) {
            throw new ExtendedNotFoundException("iui RouteInfo not found");
        }

        return iuiRouteInfo;
    }



    /**
     * @Title updateIuiRouteStatus
     * @Description TODO(update one IuiRoute Status)
     * @param serviceName
     * @param status
     * @return
     * @return RouteResult
     */
    public synchronized IuiRouteInfo updateIuiRouteStatus(String serviceName, String host, String publish_port,
                    String status, String routeWay) {

        RouteUtil.checkRouteWay(routeWay);

        RouteUtil.checkServiceStatus(status);

        try {
            String iuiRedisPrefixedKey = RouteUtil.getRedisPrefixedKey(RouteUtil.IUIROUTE, serviceName, host,
                            publish_port, routeWay);

            IuiRouteService.getInstance().updateIuiRouteStatus2Redis(iuiRedisPrefixedKey, status);


        } catch (Exception e) {
            LOGGER.error("update IuiRoute status  throw exception", e);
            throw new ExtendedInternalServerErrorException(e.getMessage());
        }

        IuiRouteInfo new_iuiRouteInfo = getIuiRouteInstance(serviceName, host, publish_port, routeWay);

        return new_iuiRouteInfo;
    }

    /**
     * @Title: saveIuiRouteInstance
     * @Description: TODO(save one IuiRouteInstance)
     * @param: @param IuiRouteInfo
     * @param: @return
     * @return: IuiRouteInfo
     */
    public synchronized IuiRouteInfo saveIuiRouteInstance4Rest(IuiRouteInfo iuiRouteInfo, String routeWay) {

        RouteUtil.checkRouteWay(routeWay);

        RouteUtil.checkRouterInfoFormat(iuiRouteInfo);


        try {
            saveIuiRouteInstance(iuiRouteInfo, routeWay);
        } catch (Exception e) {
            throw new ExtendedInternalServerErrorException(
                            "save iuiRouteInfo  fail: [serviceName]" + iuiRouteInfo.getServiceName() + e.getMessage());
        }

        return iuiRouteInfo;
    }


    public synchronized void saveIuiRouteInstance(IuiRouteInfo iuiRouteInfo, String routeWay) throws Exception {
        try {
            String iuiRedisPrefixedKey =
                            RouteUtil.getRedisPrefixedKey(RouteUtil.IUIROUTE, iuiRouteInfo.getServiceName(),
                                            iuiRouteInfo.getHost(), iuiRouteInfo.getPublish_port(), routeWay);

            IuiRouteService.getInstance().saveIuiRouteService2Redis(iuiRouteInfo, iuiRedisPrefixedKey);
            LOGGER.info("save iuiRouteInfo [serviceName]" + iuiRouteInfo.getServiceName() + " [host]"
                            + iuiRouteInfo.getHost() + " [publish_port]" + iuiRouteInfo.getPublish_port()
                            + " [routeWay]" + routeWay + " success");

        } catch (Exception e) {
            LOGGER.error("save iuiRouteInfo [serviceName]" + iuiRouteInfo.getServiceName() + " [host]"
                            + iuiRouteInfo.getHost() + " [publish_port]" + iuiRouteInfo.getPublish_port()
                            + " [routeWay]" + routeWay + " throw exception", e);
            throw e;
        }
    }



    /**
     * @Title: deleteIuiRoute
     * @Description: TODO(delete one IuiRoute)
     * @param: @param type
     * @param: @param serviceName
     * @param: @param delKey
     * @param: @return
     * @return: void
     */
    public synchronized void deleteIuiRoute(String serviceName, String host, String publish_port, String routeWay) {

        RouteUtil.checkRouteWay(routeWay);

        String iuiRedisPrefixedKey =
                        RouteUtil.getRedisPrefixedKey(RouteUtil.IUIROUTE, serviceName, host, publish_port, routeWay);

        try {
            IuiRouteService.getInstance().deleteIuiRouteService2Redis(iuiRedisPrefixedKey);
            LOGGER.info("delete iuiRouteInfo [serviceName]" + serviceName + " [host]" + host + " [publish_port]"
                            + publish_port + " [routeWay]" + routeWay + " success");

        } catch (ExtendedNotFoundException e) {
            throw e;
        } catch (Exception e) {
            LOGGER.error("delete iuiRouteInfo [serviceName]" + serviceName + " [host]" + host + " [publish_port]"
                            + publish_port + " [routeWay]" + routeWay + " throw exception", e);
            throw new ExtendedInternalServerErrorException(
                            "delete iuiRouteInfo [serviceName]" + serviceName + e.getMessage());
        }



    }



}