"""Utility functions used by the geldschieberbot"""


def to_cent(euro) -> int:
    """Parse string containing euros into a cent value"""
    if '.' in euro:
        euro = euro.split('.')
    else:
        euro = euro.split(',')
    if len(euro) > 2:
        raise TypeError
    euro[0] = int(euro[0])
    if len(euro) < 2:
        euro.append(0)
    else:
        if len(euro[1]) == 1:
            euro[1] = int(euro[1]) * 10
        else:
            euro[1] = int(euro[1])
    amount = euro[0] * 100 + euro[1]
    if amount < 0:
        raise ValueError
    return amount


def to_euro(cents) -> str:
    """Format cents as euro"""
    return f"{cents/100:.2f}"