from __future__ import annotations

from secrets import choice, token_hex
from uuid import uuid4


REFERRAL_ALPHABET = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789"


def new_object_id() -> str:
    return uuid4().hex


def new_public_token(length: int = 20) -> str:
    return token_hex(length // 2 + 1)[:length]


def new_referral_code(length: int = 8) -> str:
    return "".join(choice(REFERRAL_ALPHABET) for _ in range(length))