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"""Binary Switches."""
from datetime import datetime, tzinfo
from typing import Callable
from devolo_home_control_api.exceptions import SwitchingProtected, WrongElementError
from .property import Property
class BinarySwitchProperty(Property):
"""
Object for binary switches. It stores the binary switch state.
:param element_uid: Element UID, something like devolo.BinarySwitch:hdm:ZWave:CBC56091/24#2
:param tz: Timezone the last activity is recorded in
:param setter: Method to call on setting the state
:key enabled: State of the remote protection setting
:type enabled: bool
:key state: State the switch has at time of creating this instance
:type state: bool
"""
def __init__(self, element_uid: str, tz: tzinfo, setter: Callable[[str, bool], bool], **kwargs: bool) -> None:
"""Initialize the binary switch."""
if not element_uid.startswith("devolo.BinarySwitch:"):
raise WrongElementError(element_uid, self.__class__.__name__)
super().__init__(element_uid, tz)
self._setter = setter
self._state: bool = kwargs.pop("state", False)
self.enabled: bool = kwargs.pop("enabled", False)
@property
def state(self) -> bool:
"""State of the binary sensor."""
return self._state
@state.setter
def state(self, state: bool) -> None:
"""Update state of the binary sensor and set point in time of the last_activity."""
self._state = state
self._last_activity = datetime.now(tz=self._timezone)
self._logger.debug("State of %s set to %s.", self.element_uid, state)
def set(self, state: bool) -> bool:
"""
Set the binary switch of the given element_uid to the given state.
:param state: True if switching on, False if switching off
"""
if not self.enabled:
raise SwitchingProtected
if self._setter(self.element_uid, state):
self.state = state
return True
return False
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