/*
 * Copyright (c) 2011 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.server.action.execution.stream;

import java.io.Serializable;
import java.util.List;

import org.apache.commons.logging.Log;
import org.eurekastreams.commons.actions.ExecutionStrategy;
import org.eurekastreams.commons.actions.context.PrincipalActionContext;
import org.eurekastreams.commons.logging.LogFactory;
import org.eurekastreams.server.domain.Person;
import org.eurekastreams.server.domain.stream.StreamScope;
import org.eurekastreams.server.persistence.mappers.FindByIdMapper;
import org.eurekastreams.server.persistence.mappers.requests.FindByIdRequest;

/**
 * Delete a bookmark from current user's collection.
 */
public class DeleteCurrentUserBookmarkExecution implements ExecutionStrategy<PrincipalActionContext>
{

    /**
     * Logger.
     */
    private Log log = LogFactory.make();

    /**
     * Find by id mapper.
     */
    private FindByIdMapper<Person> personMapper;

    /**
     * Constructor.
     * 
     * @param inPersonMapper
     *            Find by id mapper.
     */
    public DeleteCurrentUserBookmarkExecution(final FindByIdMapper<Person> inPersonMapper)
    {
        personMapper = inPersonMapper;
    }

    /**
     * Delete a bookmark from current user's collection.
     * 
     * @param inActionContext
     *            action context.
     * @return true upon successful completion.
     */
    @Override
    public Serializable execute(final PrincipalActionContext inActionContext)
    {
        Person person = personMapper.execute(new FindByIdRequest("Person", inActionContext.getPrincipal().getId()));
        Long ssIdToRemove = (Long) inActionContext.getParams();
        List<StreamScope> bookmarks = person.getBookmarks();

        log.debug("Attempting to delete bookmark with id: " + ssIdToRemove);

        for (StreamScope ss : bookmarks)
        {
            log.debug("Examinging SS with id: " + ss.getId());
            if (ss.getId() == ssIdToRemove)
            {
                log.debug("Match found!");
                bookmarks.remove(ss);
                personMapper.flush();
                break;
            }
        }

        return Boolean.TRUE;
    }
}