from backend.events.bus import EventBus


def run_action(action, node, bus: EventBus):

    bus.emit(
        "task_update",
        node=node["name"],
        action=action["name"],
        state="running"
    )

    try:
        # placeholder execution logic
        result = action["cmd"]()

        bus.emit(
            "task_update",
            node=node["name"],
            action=action["name"],
            state="done"
        )

        return 0

    except Exception as e:

        bus.emit(
            "failure",
            node=node["name"],
            action=action["name"],
            state="failed",
            reason=str(e)
        )

        return 1