package se.despotify.client.protocol.command.media.playlist;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import se.despotify.client.protocol.PacketType;
import se.despotify.client.protocol.channel.Channel;
import se.despotify.client.protocol.channel.ChannelCallback;
import se.despotify.client.protocol.command.Command;
import se.despotify.client.protocol.command.ChecksumException;
import se.despotify.domain.Store;
import se.despotify.domain.User;
import se.despotify.domain.media.Playlist;
import se.despotify.domain.media.Track;
import se.despotify.exceptions.DespotifyException;
import se.despotify.util.XML;
import se.despotify.util.XMLElement;
import se.despotify.ConnectionManager;
import se.despotify.ManagedConnection;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.Date;
import java.util.ArrayList;
/**
* @since 2009-apr-26 23:16:55
*/
public class RemoveTrackFromPlaylist extends Command<Track> {
private static Logger log = LoggerFactory.getLogger(RemoveTrackFromPlaylist.class);
private Store store;
private User user;
private Playlist playlist;
private int position;
public RemoveTrackFromPlaylist(Store store, User user, Playlist playlist, int position) {
this.store = store;
this.user = user;
this.playlist = playlist;
this.position = position;
}
/*
remove track 5,4,3,2,1 (and then empty) from playlist
shn_encrypt(ctx=0x852490, buf=0xbfffddc0, len=191 [0x00bf]) called from 0x000abc35
input (plaintext):
3600bc0000c6de2f ac7f3db84e57dd94 746b750bee020000 000200000005e22c [6??????/??=?NW??tku????????????,]
27f200033c636861 6e67653e3c6f7073 3e3c64656c3e3c69 3e343c2f693e3c6b ['???<change><ops><del><i>4</i><k]
3e313c2f6b3e3c2f 64656c3e3c2f6f70 733e3c74696d653e 3132343038353232 [>1</k></del></ops><time>12408522]
37313c2f74696d65 3e3c757365723e6b 656e742e66696e65 6c6c3c2f75736572 [71</time><user>kent.finell</user]
3e3c2f6368616e67 653e3c7665727369 6f6e3e3030303030 30303030332c3030 [></change><version>0000000003,00]
3030303030303034 2c31393034343834 3330362c303c2f76 657273696f6e3e [00000004,1904484306,0</version>]
readv(fd=5, iovec=0xb0122e18 {iov_base=0x81321c, iov_len=3000}, iovcnt=15) called from 0x000cc80f (thread 0xb0123000)
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090004 [???]
shn_decrypt(ctx=0x8523c0, buf=0x81321f, len=4 [0x0004]) called from 0x000adf64
output (plaintext): 00000000 [????]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090059 [??Y]
shn_decrypt(ctx=0x8523c0, buf=0x81322a, len=89 [0x0059]) called from 0x000adf64
output (plaintext):
00003c636f6e6669 726d3e3c7269643e 383930323c2f7269 643e3c7665727369 [??<confirm><rid>8902</rid><versi]
6f6e3e3030303030 30303030332c3030 3030303030303034 2c31393034343834 [on>0000000003,0000000004,1904484]
3330362c303c2f76 657273696f6e3e3c 2f636f6e6669726d 3e [306,0</version></confirm>]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090002 [???]
shn_decrypt(ctx=0x8523c0, buf=0x81328a, len=2 [0x0002]) called from 0x000adf64
output (plaintext): 0000 [??]
17:11:12.325 I [playlist] playlist ACK
shn_encrypt(ctx=0x852490, buf=0xbfffddc0, len=191 [0x00bf]) called from 0x000abc35
input (plaintext):
3600bc0000c6de2f ac7f3db84e57dd94 746b750bee020000 0003000000047184 [6??????/??=?NW??tku???????????q?]
1fd200033c636861 6e67653e3c6f7073 3e3c64656c3e3c69 3e333c2f693e3c6b [????<change><ops><del><i>3</i><k]
3e313c2f6b3e3c2f 64656c3e3c2f6f70 733e3c74696d653e 3132343038353232 [>1</k></del></ops><time>12408522]
37323c2f74696d65 3e3c757365723e6b 656e742e66696e65 6c6c3c2f75736572 [72</time><user>kent.finell</user]
3e3c2f6368616e67 653e3c7665727369 6f6e3e3030303030 30303030342c3030 [></change><version>0000000004,00]
3030303030303033 2c32333339363431 3334392c303c2f76 657273696f6e3e [00000003,2339641349,0</version>]
readv(fd=5, iovec=0xb0122e18 {iov_base=0x8c821c, iov_len=3000}, iovcnt=15) called from 0x000cc80f (thread 0xb0123000)
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090004 [???]
shn_decrypt(ctx=0x8523c0, buf=0x8c821f, len=4 [0x0004]) called from 0x000adf64
output (plaintext): 00000000 [????]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090059 [??Y]
shn_decrypt(ctx=0x8523c0, buf=0x8c822a, len=89 [0x0059]) called from 0x000adf64
output (plaintext):
00003c636f6e6669 726d3e3c7269643e 383930333c2f7269 643e3c7665727369 [??<confirm><rid>8903</rid><versi]
6f6e3e3030303030 30303030342c3030 3030303030303033 2c32333339363431 [on>0000000004,0000000003,2339641]
3334392c303c2f76 657273696f6e3e3c 2f636f6e6669726d 3e [349,0</version></confirm>]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090002 [???]
shn_decrypt(ctx=0x8523c0, buf=0x8c828a, len=2 [0x0002]) called from 0x000adf64
output (plaintext): 0000 [??]
17:11:13.078 I [playlist] playlist ACK
shn_encrypt(ctx=0x852490, buf=0xbfffddc0, len=191 [0x00bf]) called from 0x000abc35
input (plaintext):
3600bc0000c6de2f ac7f3db84e57dd94 746b750bee020000 0004000000038b74 [6??????/??=?NW??tku????????????t]
180500033c636861 6e67653e3c6f7073 3e3c64656c3e3c69 3e323c2f693e3c6b [????<change><ops><del><i>2</i><k]
3e313c2f6b3e3c2f 64656c3e3c2f6f70 733e3c74696d653e 3132343038353232 [>1</k></del></ops><time>12408522]
37323c2f74696d65 3e3c757365723e6b 656e742e66696e65 6c6c3c2f75736572 [72</time><user>kent.finell</user]
3e3c2f6368616e67 653e3c7665727369 6f6e3e3030303030 30303030352c3030 [></change><version>0000000005,00]
3030303030303032 2c30383233323637 3331362c303c2f76 657273696f6e3e [00000002,0823267316,0</version>]
readv(fd=5, iovec=0xb0122e18 {iov_base=0x81321c, iov_len=3000}, iovcnt=15) called from 0x000cc80f (thread 0xb0123000)
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090004 [???]
shn_decrypt(ctx=0x8523c0, buf=0x81321f, len=4 [0x0004]) called from 0x000adf64
output (plaintext): 00000000 [????]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090059 [??Y]
shn_decrypt(ctx=0x8523c0, buf=0x81322a, len=89 [0x0059]) called from 0x000adf64
output (plaintext):
00003c636f6e6669 726d3e3c7269643e 383930343c2f7269 643e3c7665727369 [??<confirm><rid>8904</rid><versi]
6f6e3e3030303030 30303030352c3030 3030303030303032 2c30383233323637 [on>0000000005,0000000002,0823267]
3331362c303c2f76 657273696f6e3e3c 2f636f6e6669726d 3e [316,0</version></confirm>]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090002 [???]
shn_decrypt(ctx=0x8523c0, buf=0x81328a, len=2 [0x0002]) called from 0x000adf64
output (plaintext): 0000 [??]
17:11:13.624 I [playlist] playlist ACK
shn_encrypt(ctx=0x852490, buf=0xbfffddc0, len=191 [0x00bf]) called from 0x000abc35
input (plaintext):
3600bc0000c6de2f ac7f3db84e57dd94 746b750bee020000 0005000000023112 [6??????/??=?NW??tku???????????1?]
0ff400033c636861 6e67653e3c6f7073 3e3c64656c3e3c69 3e313c2f693e3c6b [????<change><ops><del><i>1</i><k]
3e313c2f6b3e3c2f 64656c3e3c2f6f70 733e3c74696d653e 3132343038353232 [>1</k></del></ops><time>12408522]
37333c2f74696d65 3e3c757365723e6b 656e742e66696e65 6c6c3c2f75736572 [73</time><user>kent.finell</user]
3e3c2f6368616e67 653e3c7665727369 6f6e3e3030303030 30303030362c3030 [></change><version>0000000006,00]
3030303030303031 2c31343631393133 3836342c303c2f76 657273696f6e3e [00000001,1461913864,0</version>]
readv(fd=5, iovec=0xb0122e18 {iov_base=0x8c821c, iov_len=3000}, iovcnt=15) called from 0x000cc80f (thread 0xb0123000)
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090004 [???]
shn_decrypt(ctx=0x8523c0, buf=0x8c821f, len=4 [0x0004]) called from 0x000adf64
output (plaintext): 00000000 [????]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090059 [??Y]
shn_decrypt(ctx=0x8523c0, buf=0x8c822a, len=89 [0x0059]) called from 0x000adf64
output (plaintext):
00003c636f6e6669 726d3e3c7269643e 383930353c2f7269 643e3c7665727369 [??<confirm><rid>8905</rid><versi]
6f6e3e3030303030 30303030362c3030 3030303030303031 2c31343631393133 [on>0000000006,0000000001,1461913]
3836342c303c2f76 657273696f6e3e3c 2f636f6e6669726d 3e [864,0</version></confirm>]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090002 [???]
shn_decrypt(ctx=0x8523c0, buf=0x8c828a, len=2 [0x0002]) called from 0x000adf64
output (plaintext): 0000 [??]
17:11:14.277 I [playlist] playlist ACK
shn_encrypt(ctx=0x852490, buf=0xbfffddc0, len=191 [0x00bf]) called from 0x000abc35
input (plaintext):
3600bc0000c6de2f ac7f3db84e57dd94 746b750bee020000 0006000000015723 [6??????/??=?NW??tku???????????W#]
090800033c636861 6e67653e3c6f7073 3e3c64656c3e3c69 3e303c2f693e3c6b [????<change><ops><del><i>0</i><k]
3e313c2f6b3e3c2f 64656c3e3c2f6f70 733e3c74696d653e 3132343038353232 [>1</k></del></ops><time>12408522]
37343c2f74696d65 3e3c757365723e6b 656e742e66696e65 6c6c3c2f75736572 [74</time><user>kent.finell</user]
3e3c2f6368616e67 653e3c7665727369 6f6e3e3030303030 30303030372c3030 [></change><version>0000000007,00]
3030303030303030 2c30303030303030 3030312c303c2f76 657273696f6e3e [00000000,0000000001,0</version>]
readv(fd=5, iovec=0xb0122e18 {iov_base=0x81321c, iov_len=3000}, iovcnt=15) called from 0x000cc80f (thread 0xb0123000)
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090004 [???]
shn_decrypt(ctx=0x8523c0, buf=0x81321f, len=4 [0x0004]) called from 0x000adf64
output (plaintext): 00000000 [????]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090059 [??Y]
shn_decrypt(ctx=0x8523c0, buf=0x81322a, len=89 [0x0059]) called from 0x000adf64
output (plaintext):
00003c636f6e6669 726d3e3c7269643e 383930363c2f7269 643e3c7665727369 [??<confirm><rid>8906</rid><versi]
6f6e3e3030303030 30303030372c3030 3030303030303030 2c30303030303030 [on>0000000007,0000000000,0000000]
3030312c303c2f76 657273696f6e3e3c 2f636f6e6669726d 3e [001,0</version></confirm>]
shn_decrypt(ctx=0x8523c0, buf=0xb0122e8c, len=3 [0x0003]) called from 0x000adef4
output (plaintext): 090002 [???]
shn_decrypt(ctx=0x8523c0, buf=0x81328a, len=2 [0x0002]) called from 0x000adf64
output (plaintext): 0000 [??]
17:11:14.962 I [playlist] playlist ACK
*/
/**
* @param connectionManager
* @return removed track removed from playlist
* @throws se.despotify.exceptions.DespotifyException
*/
@Override
public Track send(ConnectionManager connectionManager) throws DespotifyException {
if (!playlist.isCollaborative() && !playlist.getAuthor().equals(user.getId())) {
throw new DespotifyException("Playlist must be collaborative or owned by the current user!");
}
if (user.getPlaylists() == null) {
new LoadUserPlaylists(store, user).send(connectionManager);
}
if (playlist.getTracks() == null) {
playlist.setTracks(new ArrayList<Track>());
}
long previousChecksum = playlist.calculateChecksum();
Track track = playlist.getTracks().remove(position - 1);
playlist.setChecksum(playlist.calculateChecksum());
String xml = String.format(
"<change><ops><del><i>%s</i><k>%s</k></del></ops><time>%d</time><user>%s</user></change>" +
"<version>%010d,%010d,%010d,%d</version>",
playlist.getTracks().size(), // todo uncertain
1, // unknown <k>
new Date().getTime() / 1000,
user.getId(),
playlist.getRevision() + 1,
playlist.getTracks().size(),
playlist.getChecksum(),
playlist.isCollaborative() ? 1 : 0
);
/* Create channel callback */
ChannelCallback callback = new ChannelCallback();
Channel channel = new Channel("Change-Playlist-Channel", Channel.Type.TYPE_PLAYLIST, callback);
byte[] xmlBytes = xml.getBytes();
ByteBuffer buffer = ByteBuffer.allocate(2 + 16 + 1 + 4 + 4 + 4 + 1 + 1 + xmlBytes.length);
buffer.putShort((short) channel.getId());
buffer.put(playlist.getByteUUID());
buffer.put((byte) 0x02); // track UUID type tag
buffer.putInt(playlist.getRevision().intValue());
buffer.putInt(position); // uncertain
buffer.putInt((int)previousChecksum); // -1 only seen when creating new playlist.
buffer.put((byte) (playlist.isCollaborative() ? 0x01 : 0x00));
buffer.put((byte) 0x03); // unknown
buffer.put(xmlBytes);
buffer.flip();
/* Register channel. */
Channel.register(channel);
/* Send packet. */
ManagedConnection connection = connectionManager.getManagedConnection();
connection.getProtocol().sendPacket(PacketType.changePlaylist, buffer, "remove track from playlist");
/* Get response. */
byte[] data = callback.getData("remove track from playlist ack");
connection.close();
xml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<playlist>\n" +
new String(data, Charset.forName("UTF-8")) +
"\n</playlist>";
if (log.isDebugEnabled()) {
log.debug(xml);
}
XMLElement response = XML.load(xml);
if (response.hasChild("confirm")) {
// <version>0000000002,0000000001,1326385279,0</version>
String[] versionTagValues = response.getChild("confirm").getChildText("version").split(",", 4);
playlist.setRevision(Long.parseLong(versionTagValues[0]));
playlist.setChecksum(Long.parseLong(versionTagValues[2]));
if (playlist.size() != Long.parseLong(versionTagValues[1])) {
throw new RuntimeException("Size mismatch");
}
if(playlist.getChecksum() != playlist.calculateChecksum()) {
throw new ChecksumException(playlist.getChecksum(), playlist.calculateChecksum());
}
if (playlist.isCollaborative() != (Integer.parseInt(versionTagValues[3]) == 1)) {
throw new RuntimeException();
}
store.persist(playlist);
return track;
} else {
playlist.getTracks().add(position, track);
throw new RuntimeException("Unknown server response:\n" + xml);
}
}
}