# GalleryDeleteMediaDataProcess.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.silverpeas.components.gallery.dao.MediaDAO;
    import org.silverpeas.components.gallery.model.AlbumMedia;
    import org.silverpeas.components.gallery.model.GalleryRuntimeException;
    import org.silverpeas.components.gallery.model.Media;
    import org.silverpeas.components.gallery.model.MediaPK;
    import org.silverpeas.components.gallery.notification.AlbumMediaEventNotifier;
    import org.silverpeas.components.gallery.process.AbstractGalleryDataProcess;
    import org.silverpeas.core.ResourceReference;
    import org.silverpeas.core.comment.service.CommentServiceProvider;
    import org.silverpeas.core.contribution.content.form.DataRecord;
    import org.silverpeas.core.contribution.content.form.FormException;
    import org.silverpeas.core.contribution.content.form.RecordSet;
    import org.silverpeas.core.contribution.template.publication.PublicationTemplate;
    import org.silverpeas.core.contribution.template.publication.PublicationTemplateException;
    import org.silverpeas.core.notification.system.ResourceEvent;
    import org.silverpeas.core.process.management.ProcessExecutionContext;
    import org.silverpeas.core.process.session.ProcessSession;

    import java.util.Collection;

    import static org.silverpeas.kernel.util.StringUtil.isDefined;

    /**
     * Process to delete a media from Database
     * @author Yohann Chastagnier
     */
    public class GalleryDeleteMediaDataProcess extends AbstractGalleryDataProcess {

      private Collection<String> albumIds;

      /**
       * Default hidden constructor
       * @param media
       */
      protected GalleryDeleteMediaDataProcess(final Media media) {
        super(media);
      }

      /**
       * Gets an instance
       * @param media
       * @return
       */
      public static GalleryDeleteMediaDataProcess getInstance(final Media media) {
        return new GalleryDeleteMediaDataProcess(media);
      }

      /*
       * (non-Javadoc)
       *
       * AbstractGalleryDataProcess#processData(com.silverpeas.gallery
       * .process.GalleryProcessExecutionContext, ProcessSession)
       */
      @Override
      protected void processData(final ProcessExecutionContext context,
          final ProcessSession session) throws Exception {
        // Gets the albums
        albumIds = MediaDAO.getAlbumIdsOf(getMedia());

        // Deletes the media
        MediaDAO.deleteMedia(getMedia());

        // Delete form data
        removeXMLContentOfMedia(getMedia().getId(), context);

        // Supprimer les commentaires
        final MediaPK mediaPK = getMedia().getMediaPK();
        CommentServiceProvider.getCommentService()
            .deleteAllCommentsOnResource(getMedia().getContributionType(),
                new ResourceReference(mediaPK));

        // Supprime le silverObject correspond
        getGalleryContentManager().deleteSilverContent(getMedia());
      }

      /**
       * Centralized processing
       * @param mediaId
       * @param context
       */
      private void removeXMLContentOfMedia(final String mediaId,
          final ProcessExecutionContext context) {
        try {
          final String xmlFormName = getXMLFormName(context);
          if (isDefined(xmlFormName)) {
            final String xmlFormShortName =
                xmlFormName.substring(xmlFormName.indexOf('/') + 1, xmlFormName.indexOf('.'));
            final PublicationTemplate pubTemplate =
                getPublicationTemplateManager().getPublicationTemplate(
                    context.getComponentInstanceId() + ":" + xmlFormShortName);

            final RecordSet set = pubTemplate.getRecordSet();
            final DataRecord data = set.getRecord(mediaId);
            if (data != null) {
              set.delete(data.getId());
            }
          }
        } catch (final PublicationTemplateException | FormException e) {
          throw new GalleryRuntimeException(e);
        }
      }

      @Override
      public void onSuccessful() throws Exception {
        super.onSuccessful();
        final AlbumMediaEventNotifier notifier = AlbumMediaEventNotifier.get();
        for (final String albumId : albumIds) {
          notifier.notifyEventOn(ResourceEvent.Type.DELETION, new AlbumMedia(albumId, getMedia()));
        }
      }
    }