core/homeassistant/components/binary_sensor/rachio.py

127 lines
4.4 KiB
Python

"""
Integration with the Rachio Iro sprinkler system controller.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/binary_sensor.rachio/
"""
from abc import abstractmethod
import logging
from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.components.rachio import (DOMAIN as DOMAIN_RACHIO,
KEY_DEVICE_ID,
KEY_STATUS,
KEY_SUBTYPE,
SIGNAL_RACHIO_CONTROLLER_UPDATE,
STATUS_OFFLINE,
STATUS_ONLINE,
SUBTYPE_OFFLINE,
SUBTYPE_ONLINE,)
from homeassistant.helpers.dispatcher import dispatcher_connect
DEPENDENCIES = ['rachio']
_LOGGER = logging.getLogger(__name__)
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up the Rachio binary sensors."""
devices = []
for controller in hass.data[DOMAIN_RACHIO].controllers:
devices.append(RachioControllerOnlineBinarySensor(hass, controller))
add_devices(devices)
_LOGGER.info("%d Rachio binary sensor(s) added", len(devices))
class RachioControllerBinarySensor(BinarySensorDevice):
"""Represent a binary sensor that reflects a Rachio state."""
def __init__(self, hass, controller, poll=True):
"""Set up a new Rachio controller binary sensor."""
self._controller = controller
if poll:
self._state = self._poll_update()
else:
self._state = None
dispatcher_connect(hass, SIGNAL_RACHIO_CONTROLLER_UPDATE,
self._handle_any_update)
@property
def should_poll(self) -> bool:
"""Declare that this entity pushes its state to HA."""
return False
@property
def is_on(self) -> bool:
"""Return whether the sensor has a 'true' value."""
return self._state
def _handle_any_update(self, *args, **kwargs) -> None:
"""Determine whether an update event applies to this device."""
if args[0][KEY_DEVICE_ID] != self._controller.controller_id:
# For another device
return
# For this device
self._handle_update()
@abstractmethod
def _poll_update(self, data=None) -> bool:
"""Request the state from the API."""
pass
@abstractmethod
def _handle_update(self, *args, **kwargs) -> None:
"""Handle an update to the state of this sensor."""
pass
class RachioControllerOnlineBinarySensor(RachioControllerBinarySensor):
"""Represent a binary sensor that reflects if the controller is online."""
def __init__(self, hass, controller):
"""Set up a new Rachio controller online binary sensor."""
super().__init__(hass, controller, poll=False)
self._state = self._poll_update(controller.init_data)
@property
def name(self) -> str:
"""Return the name of this sensor including the controller name."""
return "{} online".format(self._controller.name)
@property
def device_class(self) -> str:
"""Return the class of this device, from component DEVICE_CLASSES."""
return 'connectivity'
@property
def icon(self) -> str:
"""Return the name of an icon for this sensor."""
return 'mdi:wifi-strength-4' if self.is_on\
else 'mdi:wifi-strength-off-outline'
def _poll_update(self, data=None) -> bool:
"""Request the state from the API."""
if data is None:
data = self._controller.rachio.device.get(
self._controller.controller_id)[1]
if data[KEY_STATUS] == STATUS_ONLINE:
return True
if data[KEY_STATUS] == STATUS_OFFLINE:
return False
_LOGGER.warning('"%s" reported in unknown state "%s"', self.name,
data[KEY_STATUS])
def _handle_update(self, *args, **kwargs) -> None:
"""Handle an update to the state of this sensor."""
if args[0][KEY_SUBTYPE] == SUBTYPE_ONLINE:
self._state = True
elif args[0][KEY_SUBTYPE] == SUBTYPE_OFFLINE:
self._state = False
self.schedule_update_ha_state()