"""
utilitaires créole
"""
import unicodedata
from .i18n import _


def normalize_family(family_name: str,
                     check_name: bool=True,
                     allow_dot: bool=False) -> str:
    """replace space, accent, uppercase, ... by valid character
    """
    family_name = family_name.replace('-', '_')
    if not allow_dot:
        family_name = family_name.replace('.', '_')
    family_name = family_name.replace(' ', '_')
    nfkd_form = unicodedata.normalize('NFKD', family_name)
    family_name = ''.join([c for c in nfkd_form if not unicodedata.combining(c)])
    family_name = family_name.lower()
    if check_name and family_name == 'containers':
        raise ValueError(_(f'"{family_name}" is a forbidden family name'))
    return family_name