/*
 * Copyright (c) 2010 Lockheed Martin Corporation
 *
 * 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.eurekastreams.web.client.model;

import org.eurekastreams.server.action.request.stream.GetFlaggedActivitiesByOrgRequest;
import org.eurekastreams.server.domain.PagedSet;
import org.eurekastreams.server.domain.stream.ActivityDTO;
import org.eurekastreams.web.client.events.data.GotFlaggedActivitiesResponseEvent;
import org.eurekastreams.web.client.events.data.UpdatedActivityFlagResponseEvent;
import org.eurekastreams.web.client.model.requests.UpdateActivityFlagRequest;
import org.eurekastreams.web.client.ui.Session;

/**
 * Model for dealing with flagged (inappropriate) activities.
 */
public class FlaggedActivityModel extends BaseModel implements Fetchable<GetFlaggedActivitiesByOrgRequest>,
        Updateable<UpdateActivityFlagRequest>
{
    /**
     * Singleton.
     */
    private static FlaggedActivityModel model = new FlaggedActivityModel();

    /**
     * Gets the singleton.
     *
     * @return the singleton.
     */
    public static FlaggedActivityModel getInstance()
    {
        return model;
    }

    /**
     * Retrieves a list of flagged activities for the org.
     *
     * @param inRequest
     *            Request.
     * @param inUseClientCacheIfAvailable
     *            If ok to return cached results.
     */
    public void fetch(final GetFlaggedActivitiesByOrgRequest inRequest, final boolean inUseClientCacheIfAvailable)
    {
        super.callReadAction("getFlaggedActivitiesForOrganization", inRequest,
                new OnSuccessCommand<PagedSet<ActivityDTO>>()
                {
                    public void onSuccess(final PagedSet<ActivityDTO> response)
                    {
                        Session.getInstance().getEventBus().notifyObservers(
                                new GotFlaggedActivitiesResponseEvent(response));
                    }
                }, inUseClientCacheIfAvailable);
    }

    /**
     * Marks the activity as flagged or not.
     *
     * @param inRequest
     *            Request.
     */
    public void update(final UpdateActivityFlagRequest inRequest)
    {
        String actionKey = inRequest.isFlagged() ? "flagActivity" : "unflagActivity";

        super.callWriteAction(actionKey, inRequest.getActivityId(), new OnSuccessCommand<Boolean>()
        {
            public void onSuccess(final Boolean response)
            {
                Session.getInstance().getEventBus().notifyObservers(
                        new UpdatedActivityFlagResponseEvent(inRequest.getActivityId()));
            }
        });

    }

}