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"""Default authentication backend - everything is allowed."""

from __future__ import annotations

from functools import wraps
from typing import Any, Callable, TypeVar, cast

CLIENT_AUTH: tuple[str, str] | Any | None = None


def init_app(_):
    """Initialize authentication backend."""


T = TypeVar("T", bound=Callable)


def requires_authentication(function: T):
    """Decorate functions that require authentication."""

    @wraps(function)
    def decorated(*args, **kwargs):
        return function(*args, **kwargs)

    return cast(T, decorated)