/* ===============================================================================
 *
 * Part of the InfoGlue Content Management Platform (www.infoglue.org)
 *
 * ===============================================================================
 *
 *  Copyright (C)
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2, as published by the
 * Free Software Foundation. See the file LICENSE.html for more information.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY, including 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. / 59 Temple
 * Place, Suite 330 / Boston, MA 02111-1307 / USA.
 *
 * ===============================================================================
 */

package org.infoglue.cms.applications.contenttool.actions;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.apache.log4j.Logger;
import org.exolab.castor.jdo.Database;
import org.exolab.castor.mapping.Mapping;
import org.exolab.castor.xml.Marshaller;
import org.infoglue.cms.applications.common.VisualFormatter;
import org.infoglue.cms.applications.common.actions.InfoGlueAbstractAction;
import org.infoglue.cms.controllers.kernel.impl.simple.AccessRightController;
import org.infoglue.cms.controllers.kernel.impl.simple.CastorDatabaseService;
import org.infoglue.cms.controllers.kernel.impl.simple.CategoryController;
import org.infoglue.cms.controllers.kernel.impl.simple.ContentController;
import org.infoglue.cms.controllers.kernel.impl.simple.ContentTypeDefinitionController;
import org.infoglue.cms.controllers.kernel.impl.simple.LanguageController;
import org.infoglue.cms.entities.content.Content;
import org.infoglue.cms.entities.management.impl.simple.InfoGlueExportImpl;
import org.infoglue.cms.exception.SystemException;
import org.infoglue.cms.util.CmsPropertyHandler;
import org.infoglue.cms.util.handlers.DigitalAssetBytesHandler;


/**
 * This class handles Exporting of a repository to an XML-file.
 * 
 * @author mattias
 */

public class ExportContentAction extends InfoGlueAbstractAction
{
    private final static Logger logger = Logger.getLogger(ExportContentAction.class.getName());

	private Integer repositoryId = null;
	private Integer contentId = null;
	//private List repositories = new ArrayList();
	private List contents = new ArrayList();
	
	private String fileUrl 	= "";
	private String fileName = "";
	private int assetMaxSize = -1;

	/**
	 * This shows the dialog before export.
	 * @return
	 * @throws Exception
	 */	

	public String doInput() throws Exception
	{
		//repositories = RepositoryController.getController().getRepositoryVOList();
		
		return "input";
	}
	
	/**
	 * This handles the actual exporting.
	 */
	
	protected String doExecute() throws Exception 
	{
		if(!AccessRightController.getController().getIsPrincipalAuthorized(this.getInfoGluePrincipal(), "ContentTool.ImportExport", true))
			throw new SystemException("You are not allowed to export contents.");

		Database db = CastorDatabaseService.getDatabase();
		
		try 
		{
			Mapping map = new Mapping();
			String exportFormat = CmsPropertyHandler.getExportFormat();
			
			logger.info("MappingFile:" + CastorDatabaseService.class.getResource("/xml_mapping_content_2.5.xml").toString());
			map.loadMapping(CastorDatabaseService.class.getResource("/xml_mapping_content_2.5.xml").toString());
			
			// All ODMG database access requires a transaction
			db.begin();

			//List siteNodes = new ArrayList();
			List contents = new ArrayList();
			
			String[] contentIds = getRequest().getParameterValues("contentId");
			for(int i=0; i<contentIds.length; i++)
			{
				Integer contentId = new Integer(contentIds[i]);
				//Repository repository 	= RepositoryController.getController().getRepositoryWithId(repositoryId, db);
				//SiteNode siteNode 		= SiteNodeController.getController().getRootSiteNode(repositoryId, db);
				Content content 		= ContentController.getContentController().getContentWithId(contentId, db);
				//siteNodes.add(siteNode);
				contents.add(content);
			}
			
			List contentTypeDefinitions = ContentTypeDefinitionController.getController().getContentTypeDefinitionList(db);
			List categories = CategoryController.getController().getAllActiveCategories();
			List languages = LanguageController.getController().getLanguageList(db);
			
			InfoGlueExportImpl infoGlueExportImpl = new InfoGlueExportImpl();
			
			VisualFormatter visualFormatter = new VisualFormatter();
			String fileName = "Export_contents_" + visualFormatter.formatDate(new Date(), "yyyy-MM-dd") + ".xml";
			String filePath = CmsPropertyHandler.getDigitalAssetPath();
			String fileSystemName =  filePath + File.separator + fileName;
						
			fileUrl = CmsPropertyHandler.getWebServerAddress() + "/" + CmsPropertyHandler.getDigitalAssetBaseUrl() + "/" + fileName;
			this.fileName = fileName;
						
			String encoding = "UTF-8";
			File file = new File(fileSystemName);
            FileOutputStream fos = new FileOutputStream(file);
            OutputStreamWriter osw = new OutputStreamWriter(fos, encoding);
            Marshaller marshaller = new Marshaller(osw);
            marshaller.setMapping(map);
			marshaller.setEncoding(encoding);
			DigitalAssetBytesHandler.setMaxSize(assetMaxSize);

			infoGlueExportImpl.getRootContent().addAll(contents);
			//infoGlueExportImpl.getRootSiteNode().addAll(siteNodes);
			
			//infoGlueExportImpl.getRootContents().add((ContentImpl)content);
			//infoGlueExportImpl.getRootSiteNodes().add((SiteNodeImpl)siteNode);
			
			infoGlueExportImpl.setLanguages(languages);
			infoGlueExportImpl.setContentTypeDefinitions(contentTypeDefinitions);
			infoGlueExportImpl.setCategories(categories);
			
			marshaller.marshal(infoGlueExportImpl);
			
			osw.flush();
			osw.close();
			
			db.rollback();
		} 
		catch (Exception e) 
		{
			logger.error("An error was found exporting a repository: " + e.getMessage(), e);
			db.rollback();
		}
		finally
		{
			db.close();	
		}
		
		return "success";
	}


	public void setRepositoryId(Integer repositoryId)
	{
		this.repositoryId = repositoryId;
	}

	public void setContentId(Integer contentId)
	{
		this.contentId = contentId;
	}

	public String getFileName()
	{
		return fileName;
	}

	public String getFileUrl()
	{
		return fileUrl;
	}

	public Integer getRepositoryId()
	{
		return repositoryId;
	}

	public Integer getContentId()
	{
		return contentId;
	}

	public List getContents() 
	{
		return contents;
	}

	public int getAssetMaxSize()
	{
		return assetMaxSize;
	}

	public void setAssetMaxSize(int assetMaxSize)
	{
		this.assetMaxSize = assetMaxSize;
	}

}