from collections.abc import Callable
from typing import TypeVar

from fastapi import HTTPException, status

T = TypeVar("T")


def as_501(call: Callable[[], T]) -> T:
    try:
        return call()
    except NotImplementedError as exc:
        raise HTTPException(
            status_code=status.HTTP_501_NOT_IMPLEMENTED,
            detail=str(exc),
        ) from exc