package se.despotify.client.protocol.command.media;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import se.despotify.BrowseType;
import se.despotify.client.protocol.PacketType;
import se.despotify.client.protocol.Protocol;
import se.despotify.client.protocol.channel.Channel;
import se.despotify.client.protocol.channel.ChannelCallback;
import se.despotify.client.protocol.command.Command;
import se.despotify.domain.Store;
import se.despotify.domain.media.Artist;
import se.despotify.domain.media.Result;
import se.despotify.exceptions.DespotifyException;
import se.despotify.exceptions.MissingChildElement;
import se.despotify.util.GZIP;
import se.despotify.util.Hex;
import se.despotify.util.XML;
import se.despotify.util.XMLElement;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
/**
* @since 2009-apr-25 16:28:42
*/
public class LoadArtist extends Command<Boolean> {
protected static Logger log = LoggerFactory.getLogger(LoadArtist.class);
private Artist artist;
private Store store;
public LoadArtist(Store store, Artist artist) {
this.store = store;
this.artist = artist;
}
@Override
public Boolean send(Protocol protocol) throws DespotifyException {
/* Create channel callback */
ChannelCallback callback = new ChannelCallback();
/* Send browse request. */
/* Create channel and buffer. */
Channel channel = new Channel("Browse-Channel", Channel.Type.TYPE_BROWSE, callback);
ByteBuffer buffer = ByteBuffer.allocate(2 + 1 + 16 + 4);
buffer.putShort((short) channel.getId());
buffer.put((byte) BrowseType.artist.getValue());
buffer.put(artist.getUUID());
buffer.putInt(0); // unknown
buffer.flip();
/* Register channel. */
Channel.register(channel);
/* Send packet. */
protocol.sendPacket(PacketType.browse, buffer, "load artist");
/* Get data and inflate it. */
byte[] data = GZIP.inflate(callback.getData("gzipped load artist response"));
if (log.isInfoEnabled()) {
log.info("load artist response, " + data.length + " uncompressed bytes:\n" + Hex.log(data, log));
}
/* Cut off that last 0xFF byte... */
data = Arrays.copyOfRange(data, 0, data.length - 1);
String xml = new String(data, Charset.forName("UTF-8"));
if (log.isDebugEnabled()) {
log.debug(xml);
}
XMLElement root = XML.load(xml);
if (root.getElement().getNodeName().equals("artist")) {
Artist.fromXMLElement(root, store);
return true;
} else {
throw new DespotifyException("Root element is not named <artist>: " + root.getElement().getNodeName());
}
}
}