LearnPAd/learnpad

/*
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package eu.learnpad.cw.internal.actuators;


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xwiki.model.reference.EntityReference;
import org.xwiki.observation.event.Event;

import com.xpn.xwiki.XWikiContext;
import com.xpn.xwiki.doc.XWikiDocument;
import com.xpn.xwiki.objects.BaseObject;

import eu.learnpad.cw.UICWBridge;
import eu.learnpad.cw.internal.utils.LPCodeLabels;

/**
 * @author gulyx
 * 
 **/

public abstract class SimpleEventActuator implements Runnable {
            
    protected UICWBridge cwBridge;

    protected  Logger logger;
    
    protected boolean isConfigured;
    
    protected Event event; 
    protected XWikiDocument editedDocument;
    protected XWikiContext xcontext;
    
    public SimpleEventActuator(UICWBridge cwBridge) {
        this(cwBridge, null);
    }

    public SimpleEventActuator(UICWBridge cwBridge, Logger logger) {            
        this.cwBridge = cwBridge;
        if (logger != null){
            this.logger = logger;
        }else{
            this.logger = LoggerFactory.getLogger(SimpleEventActuator.class);
        }
        
        this.isConfigured = false;
        this.editedDocument = null;
        this.xcontext = null;
        this.event = null;
    }
    
    protected abstract EntityReference targetEntityReference(String optionalLabel);

    protected abstract String forgeResourceID(String optionalLabel);

    protected abstract void notifyCWBridge(String modelSetId, String modelId, String artifactId, String resourceId, String userId);

    public void configureEvent(Event event, Object source, Object data) {
        this.event = event;
        this.editedDocument = (XWikiDocument) source;
        this.xcontext = (XWikiContext) data;

        this.isConfigured = true;
    }

    protected void processEvent() {
        EntityReference classReference = this.targetEntityReference(null);
        BaseObject xObject = editedDocument.getXObject(classReference);
        if (xObject != null) {
            String userId = xcontext.getUserReference().getName();
            String resourceId = this.forgeResourceID(null);

            String modelSetId = xObject.getStringValue(LPCodeLabels
                    .getMODELSETID_LABEL());
            String modelId = xObject.getStringValue(LPCodeLabels
                    .getMODELID_LABEL());
            String artifactId = xObject.getStringValue(LPCodeLabels
                    .getARTIFACTID_LABEL());

            logger.info("found : " + modelSetId +","+ modelId +","+ artifactId +","+ userId);
            this.notifyCWBridge(modelSetId, modelId, artifactId, resourceId, userId);
        }            
    }
    
    @Override
    public synchronized void run() {
        if (this.isConfigured){
            this.isConfigured = false;
            this.processEvent();
        }else{
            logger.warn("the method \"configureEvent(Event event, Object source, Object data)\" must be invoked before each activation of the thread!!!");
        }
    }
}