from .adapters import Endpoint, NormalizedObject, PlanAction


def require_endpoint_plugin(
    endpoint: Endpoint,
    plugin_name: str,
) -> None:
    expected = plugin_name.strip().lower()

    if not expected:
        raise ValueError("Adapter plugin name cannot be empty")

    if endpoint.plugin != expected:
        raise RuntimeError(
            f"Adapter {expected!r} cannot use endpoint "
            f"{endpoint.identity!r}"
        )


def require_action_endpoint(
    action: PlanAction,
    endpoint: Endpoint,
) -> None:
    if action.endpoint_id != endpoint.identity:
        raise RuntimeError(
            f"Plan action for {action.endpoint_id!r} does not belong "
            f"to adapter endpoint {endpoint.identity!r}"
        )


def require_desired(
    action: PlanAction,
    *,
    context: str = "Adapter apply",
) -> NormalizedObject:
    if action.desired is None:
        raise RuntimeError(
            f"{context} requires desired state"
        )

    return action.desired