from datetime import datetime
from random import choices
from string import ascii_uppercase, digits
from uuid import uuid4


def new_public_id(prefix: str) -> str:
    return f"{prefix}_{uuid4().hex[:16]}"


def new_order_no(prefix: str) -> str:
    return f"{prefix}_{datetime.now():%Y%m%d%H%M%S}{uuid4().hex[:6]}"


def new_invite_code(length: int = 6) -> str:
    return "".join(choices(ascii_uppercase + digits, k=length))