/*
 * ============LICENSE_START========================================================================
 * ONAP : ccsdk feature sdnr wt
 * =================================================================================================
 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
 * =================================================================================================
 * 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.
 * ============LICENSE_END==========================================================================
 */
package org.oransc.oam.features.devicemanager.xran.impl;

import java.util.List;
import org.onap.ccsdk.features.sdnr.wt.dataprovider.model.DataProvider;
import org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.NetconfAccessor;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.IetfNetconfNotificationsListener;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfCapabilityChange;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfConfigChange;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfConfirmedCommit;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfSessionEnd;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfSessionStart;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.netconf.config.change.Edit;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev190801.EventlogBuilder;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.PathArgument;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Listener for change notifications
 */
public class XRanChangeNotificationListener  implements IetfNetconfNotificationsListener {

    private static final Logger log = LoggerFactory.getLogger(XRanChangeNotificationListener.class);

    private final NetconfAccessor netconfAccessor;
    private final DataProvider databaseService;

    public XRanChangeNotificationListener(NetconfAccessor netconfAccessor, DataProvider databaseService) {
        this.netconfAccessor = netconfAccessor;
        this.databaseService = databaseService;
    }

    @Override
    public void onNetconfConfirmedCommit(NetconfConfirmedCommit notification) {
        log.info("onNetconfConfirmedCommit ", notification);
    }

    @Override
    public void onNetconfSessionStart(NetconfSessionStart notification) {
        log.info("onNetconfSessionStart ", notification);
    }

    @Override
    public void onNetconfSessionEnd(NetconfSessionEnd notification) {
        log.info("onNetconfSessionEnd ", notification);
    }

    @Override
    public void onNetconfCapabilityChange(NetconfCapabilityChange notification) {
        log.info("onNetconfCapabilityChange ", notification);
    }

    @Override
    public void onNetconfConfigChange(NetconfConfigChange notification) {
        log.info("onNetconfConfigChange (1) {}", notification);
        StringBuffer sb = new StringBuffer();
        List<Edit> editList = notification.nonnullEdit();
        for (Edit edit : editList) {
            if (sb.length() > 0) {
                sb.append(", ");
            }
            sb.append(edit);

            EventlogBuilder eventlogBuilder = new EventlogBuilder();

            InstanceIdentifier<?> target = edit.getTarget();
            if (target != null) {
                eventlogBuilder.setObjectId(target.toString());
                log.info("TARGET: {} {} {}", target.getClass(), target.getTargetType());
                for (PathArgument pa : target.getPathArguments()) {
                    log.info("PathArgument {}", pa);
                }
            }
            eventlogBuilder.setNodeId(netconfAccessor.getNodeId().getValue());
            eventlogBuilder.setNewValue(String.valueOf(edit.getOperation()));
            databaseService.writeEventLog(eventlogBuilder.build());
        }
        log.info("onNetconfConfigChange (2) {}", sb);
    }

}