87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
"""Support for Axis binary sensors."""
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from datetime import timedelta
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import logging
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from homeassistant.components.binary_sensor import BinarySensorDevice
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from homeassistant.const import (
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ATTR_LOCATION, CONF_EVENT, CONF_NAME, CONF_TRIGGER_TIME)
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from homeassistant.core import callback
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from homeassistant.helpers.event import async_track_point_in_utc_time
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from homeassistant.util.dt import utcnow
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DEPENDENCIES = ['axis']
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_LOGGER = logging.getLogger(__name__)
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def setup_platform(hass, config, add_entities, discovery_info=None):
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"""Set up the Axis binary devices."""
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add_entities([AxisBinarySensor(discovery_info)], True)
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class AxisBinarySensor(BinarySensorDevice):
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"""Representation of a binary Axis event."""
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def __init__(self, event_config):
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"""Initialize the Axis binary sensor."""
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self.axis_event = event_config[CONF_EVENT]
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self.device_name = event_config[CONF_NAME]
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self.location = event_config[ATTR_LOCATION]
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self.delay = event_config[CONF_TRIGGER_TIME]
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self.remove_timer = None
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async def async_added_to_hass(self):
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"""Subscribe sensors events."""
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self.axis_event.callback = self._update_callback
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def _update_callback(self):
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"""Update the sensor's state, if needed."""
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if self.remove_timer is not None:
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self.remove_timer()
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self.remove_timer = None
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if self.delay == 0 or self.is_on:
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self.schedule_update_ha_state()
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else: # Run timer to delay updating the state
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@callback
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def _delay_update(now):
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"""Timer callback for sensor update."""
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_LOGGER.debug("%s called delayed (%s sec) update",
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self.name, self.delay)
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self.async_schedule_update_ha_state()
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self.remove_timer = None
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self.remove_timer = async_track_point_in_utc_time(
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self.hass, _delay_update,
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utcnow() + timedelta(seconds=self.delay))
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@property
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def is_on(self):
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"""Return true if event is active."""
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return self.axis_event.is_tripped
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@property
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def name(self):
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"""Return the name of the event."""
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return '{}_{}_{}'.format(
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self.device_name, self.axis_event.event_type, self.axis_event.id)
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@property
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def device_class(self):
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"""Return the class of the event."""
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return self.axis_event.event_class
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@property
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def should_poll(self):
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"""No polling needed."""
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return False
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@property
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def device_state_attributes(self):
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"""Return the state attributes of the event."""
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attr = {}
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attr[ATTR_LOCATION] = self.location
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return attr
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