"""runid util."""

import secrets
import string


def generate_id(length: int = 8) -> str:
    """Generate a random base-36 string of `length` digits."""
    # There are ~2.8T base-36 8-digit strings. If we generate 210k ids,
    # we'll have a ~1% chance of collision.
    alphabet = string.ascii_lowercase + string.digits
    return "".join(secrets.choice(alphabet) for _ in range(length))