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 2016 (C) Airsonic Authors
   Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
   */
  package org.airsonic.player.ajax;
  
  import org.airsonic.player.domain.ArtistBio;
  import org.airsonic.player.domain.MediaFile;
  import org.airsonic.player.domain.MusicFolder;
  import org.airsonic.player.domain.UserSettings;
  import org.airsonic.player.i18n.LocaleResolver;
  import org.airsonic.player.service.LastFmService;
  import org.airsonic.player.service.MediaFileService;
  import org.airsonic.player.service.SecurityService;
  import org.airsonic.player.service.SettingsService;
  import org.directwebremoting.WebContextFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  
  import javax.servlet.http.HttpServletRequest;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Date;
  import java.util.List;
  
  /**
   * Provides miscellaneous AJAX-enabled services.
   * <p/>
   * This class is used by the DWR framework (http://getahead.ltd.uk/dwr/).
   *
   * @author Sindre Mehus
   */
  @Service("ajaxMultiService")
  public class MultiService {
  
      @Autowired
      private MediaFileService mediaFileService;
      @Autowired
      private LastFmService lastFmService;
      @Autowired
      private SecurityService securityService;
      @Autowired
      private SettingsService settingsService;
      @Autowired
      private LocaleResolver localeResolver;
  
      public ArtistInfo getArtistInfo(int mediaFileId, int maxSimilarArtists, int maxTopSongs) {
          HttpServletRequest request = WebContextFactory.get().getHttpServletRequest();
  
          MediaFile mediaFile = mediaFileService.getMediaFile(mediaFileId);
          List<SimilarArtist> similarArtists = getSimilarArtists(mediaFileId, maxSimilarArtists);
          ArtistBio artistBio = lastFmService.getArtistBio(mediaFile, localeResolver.resolveLocale(request));
          List<TopSong> topSongs = getTopSongs(mediaFile, maxTopSongs);
  
          return new ArtistInfo(similarArtists, artistBio, topSongs);
      }
  
      private List<TopSong> getTopSongs(MediaFile mediaFile, int limit) {
          HttpServletRequest request = WebContextFactory.get().getHttpServletRequest();
          String username = securityService.getCurrentUsername(request);
          List<MusicFolder> musicFolders = settingsService.getMusicFoldersForUser(username);
  
          List<TopSong> result = new ArrayList<TopSong>();
          List<MediaFile> files = lastFmService.getTopSongs(mediaFile, limit, musicFolders);
          mediaFileService.populateStarredDate(files, username);
          for (MediaFile file : files) {
              result.add(new TopSong(file.getId(), file.getTitle(), file.getArtist(), file.getAlbumName(),
                                     file.getDurationString(), file.getStarredDate() != null));
          }
          return result;
      }
  
      private List<SimilarArtist> getSimilarArtists(int mediaFileId, int limit) {
          HttpServletRequest request = WebContextFactory.get().getHttpServletRequest();
          String username = securityService.getCurrentUsername(request);
          List<MusicFolder> musicFolders = settingsService.getMusicFoldersForUser(username);
  
          MediaFile artist = mediaFileService.getMediaFile(mediaFileId);
          List<MediaFile> similarArtists = lastFmService.getSimilarArtists(artist, limit, false, musicFolders);
          SimilarArtist[] result = new SimilarArtist[similarArtists.size()];
          for (int i = 0; i < result.length; i++) {
              MediaFile similarArtist = similarArtists.get(i);
              result[i] = new SimilarArtist(similarArtist.getId(), similarArtist.getName());
          }
          return Arrays.asList(result);
      }
  
      public void setShowSideBar(boolean show) {
          HttpServletRequest request = WebContextFactory.get().getHttpServletRequest();
          String username = securityService.getCurrentUsername(request);
          UserSettings userSettings = settingsService.getUserSettings(username);
          userSettings.setShowSideBar(show);
          userSettings.setChanged(new Date());
          settingsService.updateUserSettings(userSettings);
      }
  
      public void setMediaFileService(MediaFileService mediaFileService) {
          this.mediaFileService = mediaFileService;
      }
  
      public void setLastFmService(LastFmService lastFmService) {
          this.lastFmService = lastFmService;
      }
  
      public void setSecurityService(SecurityService securityService) {
          this.securityService = securityService;
      }
  
      public void setSettingsService(SettingsService settingsService) {
          this.settingsService = settingsService;
      }
  }
  