/*
 * RED5 Open Source Media Server - https://github.com/Red5/ Copyright 2006-2016 by respective authors (see below). 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.
 */

package org.red5.server.adapter;

import java.util.Map;

import org.red5.server.api.IClient;
import org.red5.server.api.IConnection;
import org.red5.server.api.Red5;
import org.red5.server.api.event.IEvent;
import org.red5.server.api.scope.IBasicScope;
import org.red5.server.api.scope.IScope;
import org.red5.server.api.scope.IScopeHandler;
import org.red5.server.api.service.IServiceCall;

/**
 * Base scope handler implementation. Meant to be subclassed.
 */
public abstract class AbstractScopeAdapter implements IScopeHandler {

    //private static Logger log = LoggerFactory.getLogger(AbstractScopeAdapter.class);

    /**
     * Can start flag.
     *
     * <code>
     * true
     * </code>
     *
     * if scope is ready to be activated,
     *
     * <code>
     * false
     * </code>
     *
     * otherwise
     */
    private boolean canStart = true;

    /**
     * Can connect flag.
     *
     * <code>
     * true
     * </code>
     *
     * if connections to scope are allowed,
     *
     * <code>
     * false
     * </code>
     *
     * otherwise
     */
    private boolean canConnect;

    /**
     * Can join flag.
     *
     * <code>
     * true
     * </code>
     *
     * if scope may be joined by users,
     *
     * <code>
     * false
     * </code>
     *
     * otherwise
     */
    private boolean canJoin = true;

    /**
     * Can call service flag.
     *
     * <code>
     * true
     * </code>
     *
     * if remote service calls are allowed for the scope,
     *
     * <code>
     * false
     * </code>
     *
     * otherwise
     */
    private boolean canCallService = true;

    /**
     * Can add child scope flag.
     *
     * <code>
     * true
     * </code>
     *
     * if scope is allowed to add child scopes,
     *
     * <code>
     * false
     * </code>
     *
     * otherwise
     */
    private boolean canAddChildScope = true;

    /**
     * Can handle event flag.
     *
     * <code>
     * true
     * </code>
     *
     * if events handling is allowed,
     *
     * <code>
     * false
     * </code>
     *
     * otherwise
     */
    private boolean canHandleEvent = true;

    /**
     * Setter for can start flag.
     *
     * @param canStart
     *            <code>
     * true
     * </code>
     *
     *            if scope is ready to be activated,
     *
     *            <code>
     * false
     * </code>
     *
     *            otherwise
     */
    public void setCanStart(boolean canStart) {
        this.canStart = canStart;
    }

    /**
     * Setter for can call service flag
     *
     * @param canCallService
     *            <code>
     * true
     * </code>
     *
     *            if remote service calls are allowed for the scope,
     *
     *            <code>
     * false
     * </code>
     *
     *            otherwise
     */
    public void setCanCallService(boolean canCallService) {
        //log.trace("setCanCallService: {}", canCallService);
        this.canCallService = canCallService;
    }

    /**
     * Setter for can connect flag
     *
     * @param canConnect
     *            <code>
     * true
     * </code>
     *
     *            if connections to scope are allowed,
     *
     *            <code>
     * false
     * </code>
     *
     *            otherwise
     */
    public void setCanConnect(boolean canConnect) {
        this.canConnect = canConnect;
    }

    /**
     * Setter for 'can join' flag
     *
     * @param canJoin
     *            <code>
     * true
     * </code>
     *
     *            if scope may be joined by users,
     *
     *            <code>
     * false
     * </code>
     *
     *            otherwise
     */
    public void setJoin(boolean canJoin) {
        this.canJoin = canJoin;
    }

    /** {@inheritDoc} */
    public boolean start(IScope scope) {
        return canStart;
    }

    /** {@inheritDoc} */
    public void stop(IScope scope) {
        // nothing
    }

    /** {@inheritDoc} */
    public boolean connect(IConnection conn, IScope scope, Object[] params) {
        return canConnect;
    }

    /** {@inheritDoc} */
    public void disconnect(IConnection conn, IScope scope) {
        // nothing
    }

    /** {@inheritDoc} */
    public boolean join(IClient client, IScope scope) {
        return canJoin;
    }

    /** {@inheritDoc} */
    public void leave(IClient client, IScope scope) {
        // nothing
    }

    /** {@inheritDoc} */
    public boolean serviceCall(IConnection conn, IServiceCall call) {
        //log.trace("serviceCall - canCallService: {} scope: {} method: {}", canCallService, conn.getScope().getName(), call.getServiceMethodName());
        return canCallService;
    }

    /** {@inheritDoc} */
    public boolean addChildScope(IBasicScope scope) {
        return canAddChildScope;
    }

    /** {@inheritDoc} */
    public void removeChildScope(IBasicScope scope) {
    }

    /** {@inheritDoc} */
    public boolean handleEvent(IEvent event) {
        return canHandleEvent;
    }

    /**
     * Calls the checkBandwidth method on the current client.
     *
     * @param o
     *            Object passed from Flash, not used at the moment
     */
    public void checkBandwidth(Object o) {
        //Incoming object should be null
        IClient client = Red5.getConnectionLocal().getClient();
        if (client != null) {
            client.checkBandwidth();
        }
    }

    /**
     * Calls the checkBandwidthUp method on the current client.
     *
     * @param params
     *            Object passed from Flash
     * @return bandwidth results map
     */
    public Map<String, Object> checkBandwidthUp(Object[] params) {
        //Incoming object should be null
        IClient client = Red5.getConnectionLocal().getClient();
        if (client != null) {
            return client.checkBandwidthUp(params);
        }
        return null;
    }

    public abstract IScope getScope();

}
