from django.core.exceptions import ValidationError


def normalize_mobile(value):
    """Keep the integer storage format while accepting Iranian mobile formats."""
    mobile = str(value).strip().translate(str.maketrans("۰۱۲۳۴۵۶۷۸۹٠١٢٣٤٥٦٧٨٩", "01234567890123456789"))
    mobile = mobile.replace(" ", "").replace("-", "")
    for prefix in ("+98", "0098", "98", "0"):
        if mobile.startswith(prefix) and len(mobile) == 10 + len(prefix):
            mobile = mobile[len(prefix):]
            break
    if len(mobile) != 10 or not mobile.isascii() or not mobile.isdigit() or not mobile.startswith("9"):
        raise ValidationError({"mobile": "شماره موبایل معتبر وارد کنید."})
    return int(mobile)