from .vendor.six.moves import range

# Max. length of a word name
WORD_NAME_LENGTH = 4


def word_cleanup(word):
    return ''.join([chr(x) for x in word if x != 0]).ljust(WORD_NAME_LENGTH)


class Word(object):

    def __init__(self, song, index):
        self._song = song
        """the word's parent song"""

        self._index = index
        """the word's index within the speech instrument"""

    @property
    def song(self):
        return self._song

    @property
    def index(self):
        return self._index

    @property
    def name(self):
        """the word's name"""
        return self._song.song_data.word_names[self._index]

    @name.setter
    def name(self, value):
        self._song.song_data.word_names[self._index] = value

    @property
    def sounds(self):
        """a list of the sounds that make up the word; each sound has
        an ``allophone`` and a ``length``"""
        return self._song.song_data.words[self._index]


class SpeechInstrument(object):

    def __init__(self, song):
        self._song = song

        self._words = [
            Word(self._song, i) for i in
            range(len(self._song.song_data.words))]

    @property
    def song(self):
        """the speech instrument's parent song"""
        return self._song

    @property
    def words(self):
        """a list of the speech instrument's defined words, as Word objects"""
        return self._words