core/homeassistant/components/geofency/device_tracker.py

149 lines
4.3 KiB
Python

"""Support for the Geofency device tracker platform."""
import logging
from homeassistant.const import (
ATTR_LATITUDE,
ATTR_LONGITUDE,
)
from homeassistant.core import callback
from homeassistant.components.device_tracker import SOURCE_TYPE_GPS
from homeassistant.components.device_tracker.config_entry import (
DeviceTrackerEntity
)
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from homeassistant.helpers.restore_state import RestoreEntity
from homeassistant.helpers import device_registry
from . import DOMAIN as GF_DOMAIN, TRACKER_UPDATE
_LOGGER = logging.getLogger(__name__)
async def async_setup_entry(hass, config_entry, async_add_entities):
"""Set up Geofency config entry."""
@callback
def _receive_data(device, gps, location_name, attributes):
"""Fire HA event to set location."""
if device in hass.data[GF_DOMAIN]['devices']:
return
hass.data[GF_DOMAIN]['devices'].add(device)
async_add_entities([GeofencyEntity(
device, gps, location_name, attributes
)])
hass.data[GF_DOMAIN]['unsub_device_tracker'][config_entry.entry_id] = \
async_dispatcher_connect(hass, TRACKER_UPDATE, _receive_data)
# Restore previously loaded devices
dev_reg = await device_registry.async_get_registry(hass)
dev_ids = {
identifier[1]
for device in dev_reg.devices.values()
for identifier in device.identifiers
if identifier[0] == GF_DOMAIN
}
if dev_ids:
hass.data[GF_DOMAIN]['devices'].update(dev_ids)
async_add_entities(GeofencyEntity(dev_id) for dev_id in dev_ids)
return True
class GeofencyEntity(DeviceTrackerEntity, RestoreEntity):
"""Represent a tracked device."""
def __init__(self, device, gps=None, location_name=None, attributes=None):
"""Set up Geofency entity."""
self._attributes = attributes or {}
self._name = device
self._location_name = location_name
self._gps = gps
self._unsub_dispatcher = None
self._unique_id = device
@property
def device_state_attributes(self):
"""Return device specific attributes."""
return self._attributes
@property
def latitude(self):
"""Return latitude value of the device."""
return self._gps[0]
@property
def longitude(self):
"""Return longitude value of the device."""
return self._gps[1]
@property
def location_name(self):
"""Return a location name for the current location of the device."""
return self._location_name
@property
def name(self):
"""Return the name of the device."""
return self._name
@property
def should_poll(self):
"""No polling needed."""
return False
@property
def unique_id(self):
"""Return the unique ID."""
return self._unique_id
@property
def device_info(self):
"""Return the device info."""
return {
'name': self._name,
'identifiers': {(GF_DOMAIN, self._unique_id)},
}
@property
def source_type(self):
"""Return the source type, eg gps or router, of the device."""
return SOURCE_TYPE_GPS
async def async_added_to_hass(self):
"""Register state update callback."""
await super().async_added_to_hass()
self._unsub_dispatcher = async_dispatcher_connect(
self.hass, TRACKER_UPDATE, self._async_receive_data)
if self._attributes:
return
state = await self.async_get_last_state()
if state is None:
self._gps = (None, None)
return
attr = state.attributes
self._gps = (attr.get(ATTR_LATITUDE), attr.get(ATTR_LONGITUDE))
async def async_will_remove_from_hass(self):
"""Clean up after entity before removal."""
await super().async_will_remove_from_hass()
self._unsub_dispatcher()
self.hass.data[GF_DOMAIN]['devices'].remove(self._unique_id)
@callback
def _async_receive_data(self, device, gps, location_name, attributes):
"""Mark the device as seen."""
if device != self.name:
return
self._attributes.update(attributes)
self._location_name = location_name
self._gps = gps
self.async_write_ha_state()