import ska_tango_base as stb
import tango
import release


class FileStats(stb.base.BaseInterface):
    """Tango device that exposes file statistics as attributes."""

    FilePath = tango.server.device_property(
        dtype="DevString", default_value="dummy", doc="Path of file to monitor"
    )

    def init_device(self) -> None:
        """Initialise the device."""
        super().init_device()

        self._version_id = release.version
        self._build_state = f"{release.name} {release.version}: {release.description}"

        self.init_completed()

    def change_control_level(self, control_level: stb.base.ControlLevel) -> None:
        """Change how the device is interacting with the system under control."""
        if control_level == stb.base.ControlLevel.NO_CONTACT:
            self.component_disconnected()
        elif control_level == stb.base.ControlLevel.FULL_CONTROL:
            self.component_on()
        else:
            raise ValueError(f"Unknown control_level {control_level}")


if __name__ == "__main__":
    tango.server.run((FileStats,))