package se.despotify.client.protocol.command.media.playlist;
import se.despotify.client.protocol.command.Command;
import se.despotify.client.protocol.Protocol;
import se.despotify.client.protocol.PacketType;
import se.despotify.client.protocol.channel.ChannelCallback;
import se.despotify.client.protocol.channel.Channel;
import se.despotify.domain.media.Playlist;
import se.despotify.domain.User;
import se.despotify.exceptions.DespotifyException;
import se.despotify.util.XMLElement;
import se.despotify.util.XML;
import java.util.Date;
import java.nio.charset.Charset;
import java.nio.ByteBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @since 2009-apr-27 21:11:36
*/
public class SetPlaylistCollaborative extends Command<Boolean> {
private static Logger log = LoggerFactory.getLogger(SetPlaylistCollaborative.class);
private User user;
private Playlist playlist;
private boolean value;
public SetPlaylistCollaborative(User user, Playlist playlist, boolean value) {
this.user = user;
this.playlist = playlist;
this.value = value;
}
public Boolean send(Protocol protocol) throws DespotifyException {
if (!playlist.getAuthor().equals(user.getName())) {
throw new RuntimeException("user " + user.getName() + " != author " + playlist.getAuthor());
}
String xml = String.format(
"<change><ops><pub>%d</pub></ops>" +
"<time>%d</time><user>%s</user></change>" +
"<version>%010d,%010d,%010d,%d</version>",
value ? 1 : 0, new Date().getTime() / 1000, user.getName(),
playlist.getRevision() + 1, playlist.getTracks().size(),
playlist.getChecksum(), playlist.isCollaborative() ? 1 : 0
);
/* Create channel callback */
ChannelCallback callback = new ChannelCallback();
/* Create channel and buffer. */
Channel channel = new Channel("Change-Playlist-Channel", Channel.Type.TYPE_PLAYLIST, callback);
byte[] xmlBytes = xml.getBytes();
ByteBuffer buffer = ByteBuffer.allocate(2 + 17 + 4 + 4 + 4 + 1 + 1 + xmlBytes.length);
/* Append channel id, playlist id and some bytes... */
buffer.putShort((short)channel.getId());
buffer.put(playlist.getUUID()); /* 16 bytes */
buffer.put((byte)0x00); // 0x00 for adding tracks, 0x02 for the rest?
buffer.putInt(playlist.getRevision().intValue());
buffer.putInt(playlist.getTracks().size());
buffer.putInt(playlist.getChecksum().intValue()); /* -1: Create 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. */
protocol.sendPacket(PacketType.changePlaylist, buffer, value ? "set playlist collaborative flag true" : "set playlist collaborative flag false");
/* Get response. */
byte[] data = callback.getData(value ? "set playlist collaborative flag true response" : "set playlist collaborative flag false reponse");
xml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?><playlist>" +
new String(data, Charset.forName("UTF-8")) +
"</playlist>";
if (log.isDebugEnabled()) {
log.debug(xml);
}
XMLElement playlistElement = XML.load(xml);
if (playlistElement.hasChild("confirm")) {
/* Split version string into parts. */
String[] parts = playlistElement.getChild("confirm").getChildText("version").split(",", 4);
/* Set values. */
playlist.setRevision(Long.parseLong(parts[0]));
playlist.setChecksum(Long.parseLong(parts[2]));
playlist.setCollaborative(Integer.parseInt(parts[3]) == 1);
return true;
}
return false;
}
}