import string

from .decrypted_account import DecryptedAccount

FORBIDDEN_CHARS = frozenset("`\n\\")
PUNCTUATION = frozenset(string.punctuation).difference(FORBIDDEN_CHARS)


def _base_check(val: str, /) -> bool:
    "Returns false if finds new lines or backtick (`)"
    return not any(i in FORBIDDEN_CHARS for i in val)


def check_account_name(name: str) -> bool:
    "Returns true if account name is valid"
    return _base_check(name)


def check_login(login: str) -> bool:
    "Returns true if login is valid"
    return _base_check(login)


def check_password(passwd: str) -> bool:
    "Returns true if password is valid"
    return _base_check(passwd)


def check_account(account: DecryptedAccount) -> bool:
    """Runs checks for account name, login and password"""
    return all(
        (
            check_account_name(account.name),
            check_login(account.login),
            check_password(account.password),
        )
    )


def check_gened_password(passwd: str, /) -> bool:
    """Retuns true if generated password is valid,
    false otherwise.
    Password is valid if there is at least one lowercase character,
    uppercase character and one punctuation character"""
    return (
        any(c.islower() for c in passwd)
        and any(c.isupper() for c in passwd)
        and any(c.isdigit() for c in passwd)
        and any(c in PUNCTUATION for c in passwd)
    )