# GalleryUpdateMediaFileProcess.java

    /*
     * Copyright (C) 2000 - 2024 Silverpeas
     *
     * 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.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception. You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "http://www.silverpeas.org/docs/core/legal/floss_exception.html"
     *
     * 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 Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program. If not, see <https://www.gnu.org/licenses/>.
     */
    package org.silverpeas.components.gallery.process.media;

    import org.apache.commons.fileupload.FileItem;
    import org.silverpeas.components.gallery.MediaUtil;
    import org.silverpeas.components.gallery.Watermark;
    import org.silverpeas.components.gallery.model.Media;
    import org.silverpeas.components.gallery.process.AbstractGalleryFileProcess;
    import org.silverpeas.core.process.io.file.FileHandler;
    import org.silverpeas.core.process.management.ProcessExecutionContext;
    import org.silverpeas.core.process.session.ProcessSession;
    import org.silverpeas.kernel.util.StringUtil;
    import org.silverpeas.kernel.logging.SilverLogger;

    /**
     * Process to update a media on file system
     * @author Yohann Chastagnier
     */
    public class GalleryUpdateMediaFileProcess extends AbstractGalleryFileProcess {

      private final FileItem fileItem;
      private final Watermark watermark;

      /**
       * Gets an instance
       * @param media
       * @param fileItem
       * @param watermark
       * @return
       */
      public static GalleryUpdateMediaFileProcess getInstance(final Media media,
          final FileItem fileItem, final Watermark watermark) {
        return new GalleryUpdateMediaFileProcess(media, fileItem, watermark);
      }

      /**
       * Default hidden constructor
       * @param media
       * @param fileItem
       * @param watermark
       */
      protected GalleryUpdateMediaFileProcess(final Media media, final FileItem fileItem,
          final Watermark watermark) {
        super(media);
        this.fileItem = fileItem;
        this.watermark = watermark;
      }

      /*
       * (non-Javadoc)
       * @see AbstractFileProcess#processFiles(org.silverpeas.process.
       * management.ProcessExecutionContext, ProcessSession,
       * FileHandler)
       */
      @Override
      public void processFiles(final ProcessExecutionContext context,
          final ProcessSession session, final FileHandler fileHandler) throws Exception {

        boolean hasBeenProcessed = false;

        // Media
        if (fileItem != null && !getMedia().getType().isStreaming()) {
          final String name = fileItem.getName();
          if (StringUtil.isDefined(name)) {

            hasBeenProcessed = true;

            // Deleting repository with old media
            fileHandler.getHandledFile(Media.BASE_PATH, context.getComponentInstanceId(),
                getMedia().getWorkspaceSubFolderName()).delete();

            switch (getMedia().getType()) {
              case Photo:
                // Creating new images
                MediaUtil.processPhoto(fileHandler, getMedia().getPhoto(), fileItem, watermark);
                break;
              case Video:
                // Save new video
                MediaUtil.processVideo(fileHandler, getMedia().getVideo(), fileItem);
                break;
              case Sound:
                // Save new sound
                MediaUtil.processSound(fileHandler, getMedia().getSound(), fileItem);
                break;
              default:
                // In other cases, there is no file to manage.
                break;
            }
          }
        }

        if (!getMedia().getType().isStreaming() && !hasBeenProcessed) {
          SilverLogger.getLogger(this)
              .warn(getMedia().getType().name() + " media type is never processed");
        }
      }
    }