memories.txt

/**
     * get the tracks for a specific playlist
     * @param playlistId {String} the playlist id to look up
     * @param skip {Number} start at
     * @param take {Number} take this many
     * @return {Promise.<*>}
     */
    self.getPlaylistTracks = function (playlistId, addSongInfo, skip, take) {
        return Promise.try(function () {
            var s = _.isFinite(skip) && skip >= 0 ? skip : 0,
                t = _.isFinite(take) && take >= 1 ? take : 100000,
                isSongInfo = _.isBoolean(addSongInfo) ? addSongInfo : false,
                params = ['playlists', 'tracks', s, t, 'tags:'],
                noSongInfo = Promise.method(function (reply) {
                    var response = {};
                    if (reply && reply.result) {
                        response.count = reply.result.count;
                        response.title = reply.result.__playlistTitle;
                        response.tracks = reply.result.playlisttracks_loop;
                    }
                    return response;
                }),
                withSongInfo = Promise.method(function (reply) {
                    if (reply && reply.result) {
                        return Promise.map(reply.result.playlisttracks_loop, function (track) {
                            return self.songInfo(track.id);
                        }).then(function (tracks) {
                            var response = {};
                            response.count = reply.result.count;
                            response.title = reply.result.__playlistTitle;
                            response.tracks = tracks;
                            return response;
                        });
                    } else {
                        return noSongInfo(reply);
                    }
                });

            if (_.isNil(playlistId)) {
                throw new TypeError('playlistId');
            }
            params.push('playlist_id:' + playlistId);


            return self.request(self.defaultPlayer, params).then(function (reply) {
                return (isSongInfo) ? withSongInfo(reply) : noSongInfo(reply);
            });
        });
    };