core/homeassistant/components/sensor/blink.py

86 lines
2.5 KiB
Python

"""
Support for Blink system camera sensors.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/sensor.blink/
"""
import logging
from homeassistant.components.blink import DOMAIN
from homeassistant.const import TEMP_FAHRENHEIT
from homeassistant.helpers.entity import Entity
_LOGGER = logging.getLogger(__name__)
DEPENDENCIES = ['blink']
SENSOR_TYPES = {
'temperature': ['Temperature', TEMP_FAHRENHEIT],
'battery': ['Battery', ''],
'notifications': ['Notifications', '']
}
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up a Blink sensor."""
if discovery_info is None:
return
data = hass.data[DOMAIN].blink
devs = list()
index = 0
for name in data.cameras:
devs.append(BlinkSensor(name, 'temperature', index, data))
devs.append(BlinkSensor(name, 'battery', index, data))
devs.append(BlinkSensor(name, 'notifications', index, data))
index += 1
add_devices(devs, True)
class BlinkSensor(Entity):
"""A Blink camera sensor."""
def __init__(self, name, sensor_type, index, data):
"""A method to initialize sensors from Blink camera."""
self._name = 'blink_' + name + '_' + SENSOR_TYPES[sensor_type][0]
self._camera_name = name
self._type = sensor_type
self.data = data
self.index = index
self._state = None
self._unit_of_measurement = SENSOR_TYPES[sensor_type][1]
@property
def name(self):
"""A method to return the name of the camera."""
return self._name
@property
def state(self):
"""A camera's current state."""
return self._state
@property
def unique_id(self):
"""A unique camera sensor identifier."""
return "sensor_{}_{}".format(self._name, self.index)
@property
def unit_of_measurement(self):
"""A method to determine the unit of measurement for temperature."""
return self._unit_of_measurement
def update(self):
"""A method to retrieve sensor data from the camera."""
camera = self.data.cameras[self._camera_name]
if self._type == 'temperature':
self._state = camera.temperature
elif self._type == 'battery':
self._state = camera.battery
elif self._type == 'notifications':
self._state = camera.notifications
else:
self._state = None
_LOGGER.warning("Could not retrieve state from %s", self.name)