"""Runtime service registry for UI pages and background tasks."""

from __future__ import annotations

from app.services.data_service import DataService

_data_service: DataService | None = None


def set_data_service(service: DataService) -> None:
    global _data_service
    _data_service = service


def get_data_service() -> DataService:
    if _data_service is None:
        raise RuntimeError("DataService has not been initialized")
    return _data_service