/*
 * 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.server.action.execution.settings;

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

import org.apache.commons.logging.Log;
import org.eurekastreams.commons.actions.ExecutionStrategy;
import org.eurekastreams.commons.actions.context.ActionContext;
import org.eurekastreams.commons.logging.LogFactory;
import org.eurekastreams.server.domain.MembershipCriteria;
import org.eurekastreams.server.domain.SystemSettings;
import org.eurekastreams.server.persistence.mappers.DomainMapper;
import org.eurekastreams.server.persistence.mappers.InsertMapper;
import org.eurekastreams.server.persistence.mappers.UpdateMapper;
import org.eurekastreams.server.persistence.mappers.requests.MapperRequest;
import org.eurekastreams.server.persistence.mappers.requests.PersistenceRequest;
import org.eurekastreams.server.service.actions.strategies.UpdaterStrategy;

/**
 * Adds a single membership criteria.
 */
public class AddMembershipCriteriaExecution implements ExecutionStrategy<ActionContext>
{
    /**
     * Logger.
     */
    private Log log = LogFactory.make();

    /**
     * The system settings update mapper.
     */
    private UpdateMapper<SystemSettings> updateMapper;

    /**
     * The system settings finder mapper.
     */
    private DomainMapper<MapperRequest, SystemSettings> finder;

    /**
     * The strategy used to set the system settings.
     */
    private UpdaterStrategy updater;

    /**
     * The criteria insert mapper.
     */
    private InsertMapper<MembershipCriteria> criteriaMapper;

    /**
     * Constructor.
     *
     * @param inFinder
     *            mapper that finds the system settings.
     * @param inUpdater
     *            The UpdaterStrategy.
     * @param inUpdateMapper
     *            The update mapper.
     * @param inCriteriaMapper
     *            The criteria insert mapper.
     */
    public AddMembershipCriteriaExecution(final DomainMapper<MapperRequest, SystemSettings> inFinder,
            final UpdaterStrategy inUpdater, final UpdateMapper<SystemSettings> inUpdateMapper,
            final InsertMapper<MembershipCriteria> inCriteriaMapper)
    {

        finder = inFinder;
        updater = inUpdater;
        updateMapper = inUpdateMapper;
        criteriaMapper = inCriteriaMapper;
    }

    /**
     * This action updates the system settings with a new membership criterion.
     *
     * @param inActionContext
     *            {@link ActionContext}.
     * @return {@link SystemSettings}.
     */
    @SuppressWarnings("unchecked")
    @Override
    public SystemSettings execute(final ActionContext inActionContext)
    {
        MembershipCriteria criterion = (MembershipCriteria) inActionContext.getParams();
        log.info("adding membership criterion:" + criterion.getCriteria());

        PersistenceRequest request = new PersistenceRequest<MembershipCriteria>(criterion);
        criteriaMapper.execute(request);
        criteriaMapper.flush();

        SystemSettings systemSettings = finder.execute(null);
        List<MembershipCriteria> criteria = systemSettings.getMembershipCriteria();
        criteria.add(criterion);

        systemSettings.setMembershipCriteria(criteria);

        updater.setProperties(systemSettings, new HashMap<String, Serializable>());
        updateMapper.execute(null);

        return systemSettings;
    }

}