import logging
from collections.abc import Callable, Awaitable

logger = logging.getLogger(__name__)

type CronHandler = Callable[..., Awaitable[dict]]

_handler_registry: dict[str, CronHandler] = {}


def register_handler(name: str, handler: CronHandler) -> None:
    if name in _handler_registry:
        logger.warning("CronHandler '%s' already registered, overwriting", name)
    _handler_registry[name] = handler


def resolve_handler(name: str) -> CronHandler:
    return _handler_registry.get(name, _noop_handler)


def list_registered() -> list[str]:
    return list(_handler_registry.keys())


async def _noop_handler(**kwargs) -> dict:
    return {"message": "noop handler, job needs reassignment after reload"}