/**
* Description: Gets a list of songs to be played. This function should not be called more
* frequently than MIN_TIME_BETWEEN_PLAYLIST_CALLS allows or an error will result.
*
* @param station_token -A string representing the station's unique identification token.
* @throws RPCException when a Pandora RPC error has occurred.
* @throws IOException when Pandora's remote servers could not be reached.
* @throws HttpResponseException when an unexpected HTTP response occurs.
* @throws Exception when an improper call has been made, or an unexpected error occurs.
*/
@SuppressWarnings("unchecked")
public Vector<Song> getPlaylist(String station_token)
throws RPCException, IOException, HttpResponseException, Exception {
// This protects against a temporary account suspension from too many
// playlist requests.
if (!isGetPlaylistCallValid(station_token)) {
throw new Exception("Playlist calls are too frequent");
}
if (!this.isUserAuthorized()) {
throw new Exception(
"Improper call to getPlaylist(), " + "the user has not been logged in yet.");
}
Vector<Song> songs = new Vector<Song>();
Map<String, Object> request_args = new HashMap<String, Object>();
request_args.put("stationToken", station_token);
// Order matters in this URL request. The same order given here is
// the order received.
request_args.put("additionalAudioUrl", MP3_128 + "," + AAC_32);
JSONObject response = this.doCall("station.getPlaylist", request_args, true, true, null);
JSONArray songs_returned = response.getJSONArray("items");
for (int i = 0; i < songs_returned.length(); ++i) {
Map<String, Object> song_data = JSONHelper.toMap(songs_returned.getJSONObject(i));
ArrayList<PandoraAudioUrl> audio_url_mappings = new ArrayList<PandoraAudioUrl>();
if (song_data.get("additionalAudioUrl") instanceof Vector<?>) {
Vector<String> audio_urls = (Vector<String>) song_data.get("additionalAudioUrl");
// This has to be in the same order as the request.
audio_url_mappings.add(new PandoraAudioUrl(MP3_128, 128, audio_urls.get(0)));
audio_url_mappings.add(new PandoraAudioUrl(AAC_32, 32, audio_urls.get(1)));
}
// MP3_192 data
if (isPandoraOneCredentials()) {
audio_url_mappings.add(
new PandoraAudioUrl(
(Map<String, Object>)
((Map<String, Object>) song_data.get("audioUrlMap")).get("highQuality")));
}
// AAC_64 data
audio_url_mappings.add(
new PandoraAudioUrl(
(Map<String, Object>)
((Map<String, Object>) song_data.get("audioUrlMap")).get("mediumQuality")));
songs.add(new Song(song_data, audio_url_mappings));
}
this.last_acquired_playlist_time = System.currentTimeMillis() / 1000L;
this.last_acquired_playlist_station = station_token;
return songs;
}
