content: /*
    This file is part of Airsonic.
  
    Airsonic 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 3 of the License, or
    (at your option) any later version.
  
    Airsonic 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 Airsonic.  If not, see <http://www.gnu.org/licenses/>.
  
    Copyright 2017 (C) Airsonic Authors
    Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
  */
  package org.airsonic.player.service.upnp;
  
  import org.airsonic.player.domain.Genre;
  import org.airsonic.player.domain.MediaFile;
  import org.airsonic.player.domain.MusicFolder;
  import org.airsonic.player.util.Util;
  import org.fourthline.cling.support.model.BrowseResult;
  import org.fourthline.cling.support.model.DIDLContent;
  import org.fourthline.cling.support.model.SortCriterion;
  import org.fourthline.cling.support.model.container.Container;
  import org.fourthline.cling.support.model.container.GenreContainer;
  import org.springframework.stereotype.Service;
  
  import java.util.List;
  
  /**
   * @author Allen Petersen
   * @version $Id$
   */
  @Service
  public class GenreUpnpProcessor extends UpnpContentProcessor <Genre, MediaFile> {
  
      public GenreUpnpProcessor() {
          setRootId(DispatchingContentDirectory.CONTAINER_ID_GENRE_PREFIX);
          setRootTitle("Genres");
      }
  
      /**
       * Browses the top-level content of a type.
       */
      public BrowseResult browseRoot(String filter, long firstResult, long maxResults, SortCriterion[] orderBy) throws Exception {
          // we have to override this to do an index-based id.
          DIDLContent didl = new DIDLContent();
          List<Genre> allItems = getAllItems();
          if (filter != null) {
              // filter items
          }
          if (orderBy != null) {
              // sort items
          }
          List<Genre> selectedItems = Util.subList(allItems, firstResult, maxResults);
          for (int i = 0; i < selectedItems.size(); i++) {
              Genre item = selectedItems.get(i);
              didl.addContainer(createContainer(item, (int) (i + firstResult)));
          }
          return createBrowseResult(didl, (int) didl.getCount(), allItems.size());
      }
  
      public Container createContainer(Genre item) {
          // genre uses index because we don't have a proper id
          return null;
      }
  
      public Container createContainer(Genre item, int index) {
          GenreContainer container = new GenreContainer();
          container.setId(getRootId() + DispatchingContentDirectory.SEPARATOR + index);
          container.setParentID(getRootId());
          container.setTitle(item.getName());
          container.setChildCount(item.getAlbumCount());
  
          return container;
      }
  
      public List<Genre> getAllItems() {
          return getDispatcher().getMediaFileService().getGenres(false);
      }
  
      public Genre getItemById(String id) {
          int index = Integer.parseInt(id);
          List<Genre> allGenres = getAllItems();
          if (allGenres.size() > index) {
              return allGenres.get(index);
          }
          return null;
      }
  
      public List<MediaFile> getChildren(Genre item) {
          List<MusicFolder> allFolders = getDispatcher().getSettingsService().getAllMusicFolders();
          return getDispatcher().getMediaFileProcessor().getMediaFileDao().getSongsByGenre(item.getName(), 0, Integer.MAX_VALUE, allFolders);
      }
  
      public void addChild(DIDLContent didl, MediaFile child) {
          didl.addItem(getDispatcher().getMediaFileProcessor().createItem(child));
      }
  }
  