import re

SONG = "song"
ARTIST = "artist"
PLAYLIST = "playlist"
ALBUM = "album"
DIRECTORY = "directory"
VDIR = "vdir"
PREFIX = "subidy"
SEARCH = "search"
RANDOM = "random"

regex = re.compile(r"(\w+?):(\w+?)(?::|$)(.+?)?$")


def is_type_result_valid(result):
    return result is not None and result.group(1) == PREFIX


def is_id_result_valid(result, type):
    return (
        is_type_result_valid(result)
        and result.group(1) == PREFIX
        and result.group(2) == type
    )


def is_uri(uri):
    return regex.match(uri) is not None


def get_song_id(uri):
    result = regex.match(uri)
    if not is_id_result_valid(result, SONG):
        return None
    return result.group(3)


def get_artist_id(uri):
    result = regex.match(uri)
    if not is_id_result_valid(result, ARTIST):
        return None
    return result.group(3)


def get_playlist_id(uri):
    result = regex.match(uri)
    if not is_id_result_valid(result, PLAYLIST):
        return None
    return result.group(3)


def get_album_id(uri):
    result = regex.match(uri)
    if not is_id_result_valid(result, ALBUM):
        return None
    return result.group(3)


def get_directory_id(uri):
    result = regex.match(uri)
    if not is_id_result_valid(result, DIRECTORY):
        return None
    return result.group(3)


def get_vdir_id(uri):
    result = regex.match(uri)
    if not is_id_result_valid(result, VDIR):
        return None
    return result.group(3)


def get_type(uri):
    result = regex.match(uri)
    if not is_type_result_valid(result):
        return None
    return result.group(2)


def get_type_uri(type, id):
    return f"{PREFIX}:{type}:{id}"


def get_artist_uri(id):
    return get_type_uri(ARTIST, id)


def get_album_uri(id):
    return get_type_uri(ALBUM, id)


def get_song_uri(id):
    return get_type_uri(SONG, id)


def get_directory_uri(id):
    return get_type_uri(DIRECTORY, id)


def get_vdir_uri(id):
    return get_type_uri(VDIR, id)


def get_playlist_uri(id):
    return get_type_uri(PLAYLIST, id)


def get_search_uri(query):
    return get_type_uri(SEARCH, query)