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/*
This file is part of Subsonic.
Subsonic 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.
Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package net.sourceforge.subsonic.ajax;
import net.sourceforge.subsonic.domain.AvatarScheme;
import net.sourceforge.subsonic.domain.MediaFile;
import net.sourceforge.subsonic.domain.Player;
import net.sourceforge.subsonic.domain.TransferStatus;
import net.sourceforge.subsonic.domain.UserSettings;
import net.sourceforge.subsonic.service.MediaFileService;
import net.sourceforge.subsonic.service.MediaScannerService;
import net.sourceforge.subsonic.service.PlayerService;
import net.sourceforge.subsonic.service.SettingsService;
import net.sourceforge.subsonic.service.StatusService;
import net.sourceforge.subsonic.util.StringUtil;
import org.apache.commons.lang.StringUtils;
import org.directwebremoting.WebContext;
import org.directwebremoting.WebContextFactory;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* Provides AJAX-enabled services for retrieving the currently playing file and directory.
* This class is used by the DWR framework (http://getahead.ltd.uk/dwr/).
*
* @author Sindre Mehus
*/
public class NowPlayingService {
private PlayerService playerService;
private StatusService statusService;
private SettingsService settingsService;
private MediaScannerService mediaScannerService;
private MediaFileService mediaFileService;
/**
* Returns details about what the current player is playing.
*
* @return Details about what the current player is playing, or <code>null</code> if not playing anything.
*/
public NowPlayingInfo getNowPlayingForCurrentPlayer() throws Exception {
WebContext webContext = WebContextFactory.get();
Player player = playerService.getPlayer(webContext.getHttpServletRequest(), webContext.getHttpServletResponse());
List<TransferStatus> statuses = statusService.getStreamStatusesForPlayer(player);
List<NowPlayingInfo> result = convert(statuses);
return result.isEmpty() ? null : result.get(0);
}
/**
* Returns details about what all users are currently playing.
*
* @return Details about what all users are currently playing.
*/
public List<NowPlayingInfo> getNowPlaying() throws Exception {
return convert(statusService.getAllStreamStatuses());
}
/**
* Returns media folder scanning status.
*/
public ScanInfo getScanningStatus() {
return new ScanInfo(mediaScannerService.isScanning(), mediaScannerService.getScanCount());
}
private List<NowPlayingInfo> convert(List<TransferStatus> statuses) throws Exception {
HttpServletRequest request = WebContextFactory.get().getHttpServletRequest();
String url = request.getRequestURL().toString();
List<NowPlayingInfo> result = new ArrayList<NowPlayingInfo>();
for (TransferStatus status : statuses) {
Player player = status.getPlayer();
File file = status.getFile();
if (player != null && player.getUsername() != null && file != null) {
String username = player.getUsername();
UserSettings userSettings = settingsService.getUserSettings(username);
if (!userSettings.isNowPlayingAllowed()) {
continue;
}
MediaFile mediaFile = mediaFileService.getMediaFile(file);
File coverArt = mediaFileService.getCoverArt(mediaFile);
String artist = mediaFile.getArtist();
String title = mediaFile.getTitle();
String streamUrl = url.replaceFirst("/dwr/.*", "/stream?player=" + player.getId() + "&id=" + mediaFile.getId());
String albumUrl = url.replaceFirst("/dwr/.*", "/main.view?id=" + mediaFile.getId());
String lyricsUrl = url.replaceFirst("/dwr/.*", "/lyrics.view?artistUtf8Hex=" + StringUtil.utf8HexEncode(artist) +
"&songUtf8Hex=" + StringUtil.utf8HexEncode(title));
String coverArtUrl = coverArt == null ? null : url.replaceFirst("/dwr/.*", "/coverArt.view?size=48&id=" + mediaFile.getId());
String coverArtZoomUrl = coverArt == null ? null : url.replaceFirst("/dwr/.*", "/coverArt.view?id=" + mediaFile.getId());
String avatarUrl = null;
if (userSettings.getAvatarScheme() == AvatarScheme.SYSTEM) {
avatarUrl = url.replaceFirst("/dwr/.*", "/avatar.view?id=" + userSettings.getSystemAvatarId());
} else if (userSettings.getAvatarScheme() == AvatarScheme.CUSTOM && settingsService.getCustomAvatar(username) != null) {
avatarUrl = url.replaceFirst("/dwr/.*", "/avatar.view?username=" + username);
}
// Rewrite URLs in case we're behind a proxy.
if (settingsService.isRewriteUrlEnabled()) {
String referer = request.getHeader("referer");
streamUrl = StringUtil.rewriteUrl(streamUrl, referer);
albumUrl = StringUtil.rewriteUrl(albumUrl, referer);
lyricsUrl = StringUtil.rewriteUrl(lyricsUrl, referer);
coverArtUrl = StringUtil.rewriteUrl(coverArtUrl, referer);
coverArtZoomUrl = StringUtil.rewriteUrl(coverArtZoomUrl, referer);
avatarUrl = StringUtil.rewriteUrl(avatarUrl, referer);
}
String tooltip = StringUtil.toHtml(artist) + " – " + StringUtil.toHtml(title);
if (StringUtils.isNotBlank(player.getName())) {
username += "@" + player.getName();
}
artist = StringUtil.toHtml(StringUtils.abbreviate(artist, 25));
title = StringUtil.toHtml(StringUtils.abbreviate(title, 25));
username = StringUtil.toHtml(StringUtils.abbreviate(username, 25));
long minutesAgo = status.getMillisSinceLastUpdate() / 1000L / 60L;
if (minutesAgo < 60) {
result.add(new NowPlayingInfo(username, artist, title, tooltip, streamUrl, albumUrl, lyricsUrl,
coverArtUrl, coverArtZoomUrl, avatarUrl, (int) minutesAgo));
}
}
}
return result;
}
public void setPlayerService(PlayerService playerService) {
this.playerService = playerService;
}
public void setStatusService(StatusService statusService) {
this.statusService = statusService;
}
public void setSettingsService(SettingsService settingsService) {
this.settingsService = settingsService;
}
public void setMediaScannerService(MediaScannerService mediaScannerService) {
this.mediaScannerService = mediaScannerService;
}
public void setMediaFileService(MediaFileService mediaFileService) {
this.mediaFileService = mediaFileService;
}
}
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