/*
 * Copyright 2018-present Open Networking Foundation
 *
 * 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.onosproject.xmpp.pubsub;

import org.onosproject.net.DeviceId;
import org.onosproject.xmpp.pubsub.model.XmppEventNotification;
import org.onosproject.xmpp.pubsub.model.XmppPubSubError;

/**
 * Responsible for controlling Publish/Subscribe functionality of XMPP.
 */
public interface XmppPubSubController {

    /**
     * Method allows to send event notification to XMPP device.
     *
     * @param deviceId identifier of underlaying device
     * @param eventNotification payload of event notification
     */
    void notify(DeviceId deviceId, XmppEventNotification eventNotification);

    /**
     * Method allows to send error notification to XMPP device.
     *
     * @param deviceId identifier of underlaying device
     * @param error payload of error notification
     */
    void notifyError(DeviceId deviceId, XmppPubSubError error);

    /**
     * Register listener for Publish/Retract events.
     *
     * @param xmppPublishEventsListener listener to notify
     */
    void addXmppPublishEventsListener(XmppPublishEventsListener xmppPublishEventsListener);

    /**
     * Unregister listener for Publish/Retract events.
     *
     * @param xmppPublishEventsListener listener to unregister
     */
    void removeXmppPublishEventsListener(XmppPublishEventsListener xmppPublishEventsListener);

    /**
     * Register listener for Subscribe/Unsubscribe events.
     *
     * @param xmppSubscribeEventsListener listener to notify
     */
    void addXmppSubscribeEventsListener(XmppSubscribeEventsListener xmppSubscribeEventsListener);

    /**
     * Unregister listener for Subscribe/Unsubscribe events.
     *
     * @param xmppSubscribeEventsListener listener to unregister
     */
    void removeXmppSubscribeEventsListener(XmppSubscribeEventsListener xmppSubscribeEventsListener);

}