import random
from typing import Optional


stuff = {}


def register_var(name: str | None = None):
    def wrapper(coro):
        varname = name or coro.__name__
        stuff[varname] = coro
        return coro

    return wrapper


@register_var("random")
async def random_func(ctx, a: int, b: Optional[int] = None):
    a = int(a)
    b = int(b) if b is not None else None
    if b is not None:
        low, high = a, b
    else:
        low, high = 0, a
    return random.randint(low, high)


@register_var("user")
async def user_func(ctx, userstr: int | str):
    """
    Attempt to turn the given userstr into a user.
    Currently just looks up the user directly.
    Some fuzzy matching may be appropriate in the future.
    """
    ...