/**
 * =============================================================================
 *
 * ORCID (R) Open Source
 * http://orcid.org
 *
 * Copyright (c) 2012-2014 ORCID, Inc.
 * Licensed under an MIT-Style License (MIT)
 * http://orcid.org/open-source-license
 *
 * This copyright and license information (including a link to the full license)
 * shall be included in its entirety in all copies or substantial portion of
 * the software.
 *
 * =============================================================================
 */
package org.orcid.listener;

import java.util.Map;

import javax.annotation.Resource;

import org.orcid.utils.listener.LastModifiedMessage;
import org.orcid.utils.listener.MessageConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

/**
 * This class forms the basis of the message drive data dump and SOLR index
 * updater. It is intended to be a stand alone application but can sit alongside
 * other modules in dev, QA and sandbox.
 * 
 * Example use of a message:
 * 
 * LOG.debug("Recieved last updated message");
 * map.forEach((k,v)->LOG.debug(k+"->"+v));
 * 
 * //alternative LastModifiedMessage m = new LastModifiedMessage(map);
 * LOG.debug(m.getOrcid());
 * 
 * @author tom
 *
 */
@Component
public class UpdatedOrcidListener {

    Logger LOG = LoggerFactory.getLogger(UpdatedOrcidListener.class);

    @Resource
    public UpdatedOrcidExpringQueue<UpdatedOrcidWorker> cacheQueue;

    /**
     * Queues incoming messages for processing, eventually handled by UpdatedOrcidWorker
     * 
     * @param map
     */
    @JmsListener(destination = MessageConstants.Queues.UPDATED_ORCIDS)
    public void processMessage(final Map<String, String> map) {
        LastModifiedMessage message = new LastModifiedMessage(map);
        LOG.info("Recieved " + MessageConstants.Queues.UPDATED_ORCIDS + " message for orcid " + message.getOrcid() + " " + message.getLastUpdated());
        LastModifiedMessage existingMessage = cacheQueue.getCache().getIfPresent(message.getOrcid());
        if (existingMessage == null || message.getLastUpdated().after(existingMessage.getLastUpdated()))
            cacheQueue.getCache().put(message.getOrcid(), message);
    }

}