"""
A set of common utilities.
"""

import re

def inputYN(text: str, default: bool=None):
    """
    Prompty the user with a yes/no prompt.

    Args:
        text (str): The text displayed to the user.
        default (bool): The default answer.
    """

    while True:
        i = input(text)

        if i.lower() in ['1', 'y', 'yes']:
            return True
        if i.lower() in ['0', 'n', 'no']:
            return False
        if default is not None and i == '':
            return default

def parseLrcLine(lrcLine: str) -> [float, str]:
    """
    Parses a line from an lrc file.
    Turns "[00:36.21] If you decide to stay" into
    [36.21, 'If you decide to stay'].

    Args:
        lrcLine (str): The single line from the lrc file.
    
    Returns:
        float: How many seconds into the song the lyric is.
        str: The lytic.
    """

    t = None

    if re.search(r'^\[[0-9][0-9]:[0-9][0-9](\.[0-9][0-9])?\].*$', lrcLine):
        timeStamp = lrcLine[1:].split(']')[0]
        minutes, seconds = timeStamp.split(':')
        minutes, seconds = (int(minutes), float(seconds))
        t = minutes * 60 + seconds
        lrcLine = ']'.join(lrcLine.split(']')[1:]).strip()

    return t, lrcLine