/*
 * Copyright (C) 2005-2007 Alfresco Software Limited.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program 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 General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 * As a special exception to the terms and conditions of version 2.0 of 
 * the GPL, you may redistribute this Program in connection with Free/Libre 
 * and Open Source Software ("FLOSS") applications as described in Alfresco's 
 * FLOSS exception.  You should have recieved a copy of the text describing 
 * the FLOSS exception, and it is also available here: 
 * http://www.alfresco.com/legal/licensing"
 */
package org.alfresco.repo.avm.wf;

import java.util.List;

import org.alfresco.repo.avm.AVMNodeConverter;
import org.alfresco.repo.workflow.jbpm.JBPMNode;
import org.alfresco.repo.workflow.jbpm.JBPMSpringActionHandler;
import org.alfresco.service.ServiceRegistry;
import org.alfresco.service.cmr.avm.AVMNodeDescriptor;
import org.alfresco.service.cmr.avm.AVMService;
import org.alfresco.service.cmr.avmsync.AVMDifference;
import org.alfresco.service.cmr.avmsync.AVMSyncService;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.util.Pair;
import org.jbpm.graph.exe.ExecutionContext;
import org.springframework.beans.factory.BeanFactory;


/**
 * Clear "submitted" mark from (source of) items within the WCM Workflow Package
 * 
 * @author davidc
 */
public class AVMClearSubmittedHandler extends JBPMSpringActionHandler 
{
   private static final long serialVersionUID = 4113360751217684995L;

   /**
    * The AVMService instance.
    */
   private AVMService avmService;
    
   /**
    * The AVMSyncService instance.
    */
   private AVMSyncService avmSyncService;
    
   /**
    * The AVMSubmittedAspect instance.
    */
   private AVMSubmittedAspect avmSubmittedAspect;
    
   /**
    * Initialize service references.
    * @param factory The BeanFactory to get references from.
    */
   @Override
   protected void initialiseHandler(BeanFactory factory) 
   {
      this.avmService = (AVMService)factory.getBean(ServiceRegistry.AVM_SERVICE.getLocalName());
      this.avmSyncService = (AVMSyncService)factory.getBean(ServiceRegistry.AVM_SYNC_SERVICE.getLocalName());
      this.avmSubmittedAspect = (AVMSubmittedAspect)factory.getBean("AVMSubmittedAspect");
   }

   /**
    * Do the actual work.
    * @param executionContext The context to get stuff from.
    */
   public void execute(final ExecutionContext executionContext) 
      throws Exception 
   {
      // TODO: Allow submit parameters to be passed into this action handler
      //       rather than pulling directly from execution context
        
      // NOTE: Submitted items can only be marked as "submitted" if we know where they came from
      String from = (String)executionContext.getContextInstance().getVariable("wcmwf_fromPath");
      if (from == null || from.length() == 0)
      {
         return;
      }
      // retrieve list of changes in submitted package
      NodeRef pkg = ((JBPMNode)executionContext.getContextInstance().getVariable("bpm_package")).getNodeRef();
      Pair<Integer, String> pkgPath = AVMNodeConverter.ToAVMVersionPath(pkg);
      AVMNodeDescriptor pkgDesc = this.avmService.lookup(pkgPath.getFirst(), pkgPath.getSecond());
      String targetPath = pkgDesc.getIndirection();
      final List<AVMDifference> diffs = this.avmSyncService.compare(pkgPath.getFirst(), 
                                                                    pkgPath.getSecond(), 
                                                                    -1, 
                                                                    targetPath, 
                                                                    null);

      // for each change, mark original as submitted
      for (final AVMDifference diff : diffs)
      {
         final String submittedPath = from + diff.getSourcePath().substring(pkgPath.getSecond().length());
         this.clearSubmitted(this.avmService.lookup(-1, submittedPath, true));
      }
   }

   /**
    * Recursively clear the submitted aspect.
    */
   private void clearSubmitted(final AVMNodeDescriptor d)
   {
      this.avmSubmittedAspect.clearSubmitted(d.getVersionID(), d.getPath());
      if (d.isDirectory())
      {
         for (final AVMNodeDescriptor c : this.avmService.getDirectoryListingArray(d, true))
         {
            this.clearSubmitted(c);
         }
      }
   }
}