/*
    * Copyright (C) 2003-2008 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Affero General Public License
    * as published by the Free Software Foundation; either version 3
    * 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, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.services.cms.thumbnail.impl;
  
  import java.awt.image.BufferedImage;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.List;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import javax.jcr.Node;
  
  import org.exoplatform.container.component.ComponentPlugin;
  import org.exoplatform.container.xml.InitParams;
  import org.exoplatform.services.cms.thumbnail.ThumbnailPlugin;
  import org.exoplatform.services.log.ExoLogger;
  import org.exoplatform.services.log.Log;
  import org.icepdf.core.exceptions.PDFException;
  import org.icepdf.core.exceptions.PDFSecurityException;
  import org.icepdf.core.pobjects.Document;
  import org.icepdf.core.pobjects.Page;
  import org.icepdf.core.pobjects.Stream;
  import org.icepdf.core.util.GraphicsRenderingHints;
  
  /**
   * Created by The eXo Platform SARL
   * Author : Dang Van Minh
   *          minh.dang@exoplatform.com
   * OCt 22, 2009
   * 2:20:33 PM
   */
  public class PDFThumbnailPlugin implements ComponentPlugin, ThumbnailPlugin {
  
    private ThumbnailType config;
    private String description;
    private String name;
    private static final Log LOG = ExoLogger.getExoLogger(PDFThumbnailPlugin.class.getName());
  
    public PDFThumbnailPlugin(InitParams initParams) throws Exception {
      config = initParams.getObjectParamValues(ThumbnailType.class).get(0);
    }
  
    public String getDescription() {
      return description;
    }
  
    public String getName() {
      return name;
    }
  
    public void setDescription(String description) {
      this.description = description;
    }
  
    public void setName(String name) {
      this.name = name;
    }
  
    public BufferedImage getBufferedImage(Node contentNode, String nodePath) throws Exception {
      Document document = new Document();
  
      // Turn off Log of org.icepdf.core.pobjects.Stream to not print error stack trace in case
      // viewing a PDF file including CCITT (Fax format) images
      // TODO: Remove these statement and comments after IcePDF fix ECMS-3765
      Logger.getLogger(Stream.class.toString()).setLevel(Level.OFF);
  
      try {
        InputStream input = contentNode.getProperty("jcr:data").getStream() ;
        document.setInputStream(input, nodePath);      
      } catch (PDFException ex) {
        if (LOG.isWarnEnabled()) {
          LOG.warn("Error parsing PDF document " + ex);
        }
      } catch (PDFSecurityException ex) {
        if (LOG.isWarnEnabled()) {
          LOG.warn("Error encryption not supported " + ex);
        }
      } catch (FileNotFoundException ex) {
        if (LOG.isWarnEnabled()) {
          LOG.warn("Error file not found " + ex);
        }
      } catch (IOException ex) {
        if (LOG.isWarnEnabled()) {
         LOG.warn("Error handling PDF document " + contentNode.getPath());
       }
     }
     // Paint each pages content to an image and write the image to file
     BufferedImage image = (BufferedImage) document.getPageImage(0, GraphicsRenderingHints.SCREEN,
         Page.BOUNDARY_CROPBOX, 0.0f, 1.0f);
     document.dispose();
     return image;
   }
 
   public List<String> getMimeTypes() {
     return config.getMimeTypes();
   }
 
 }