112 lines
3.4 KiB
Python
112 lines
3.4 KiB
Python
"""Support for Luftdaten sensors."""
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from homeassistant.components.sensor import SensorEntity, SensorEntityDescription
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from homeassistant.const import (
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ATTR_ATTRIBUTION,
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ATTR_LATITUDE,
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ATTR_LONGITUDE,
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CONF_SHOW_ON_MAP,
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)
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from homeassistant.core import callback
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from homeassistant.helpers.dispatcher import async_dispatcher_connect
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from . import (
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DATA_LUFTDATEN,
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DATA_LUFTDATEN_CLIENT,
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DEFAULT_ATTRIBUTION,
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DOMAIN,
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SENSOR_TYPES,
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TOPIC_UPDATE,
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)
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from .const import ATTR_SENSOR_ID
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async def async_setup_entry(hass, entry, async_add_entities):
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"""Set up a Luftdaten sensor based on a config entry."""
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luftdaten = hass.data[DOMAIN][DATA_LUFTDATEN_CLIENT][entry.entry_id]
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entities = [
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LuftdatenSensor(luftdaten, description, entry.data[CONF_SHOW_ON_MAP])
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for description in SENSOR_TYPES
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if description.key in luftdaten.sensor_conditions
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]
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async_add_entities(entities, True)
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class LuftdatenSensor(SensorEntity):
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"""Implementation of a Luftdaten sensor."""
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_attr_should_poll = False
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def __init__(self, luftdaten, description: SensorEntityDescription, show):
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"""Initialize the Luftdaten sensor."""
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self.entity_description = description
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self._async_unsub_dispatcher_connect = None
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self.luftdaten = luftdaten
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self._data = None
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self._show_on_map = show
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self._attrs = {}
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@property
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def native_value(self):
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"""Return the state of the device."""
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if self._data is not None:
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try:
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return self._data[self.entity_description.key]
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except KeyError:
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return None
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@property
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def unique_id(self) -> str:
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"""Return a unique, friendly identifier for this entity."""
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if self._data is not None:
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try:
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return f"{self._data['sensor_id']}_{self.entity_description.key}"
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except KeyError:
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return None
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@property
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def extra_state_attributes(self):
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"""Return the state attributes."""
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self._attrs[ATTR_ATTRIBUTION] = DEFAULT_ATTRIBUTION
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if self._data is not None:
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try:
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self._attrs[ATTR_SENSOR_ID] = self._data["sensor_id"]
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except KeyError:
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return None
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on_map = ATTR_LATITUDE, ATTR_LONGITUDE
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no_map = "lat", "long"
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lat_format, lon_format = on_map if self._show_on_map else no_map
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try:
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self._attrs[lon_format] = self._data["longitude"]
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self._attrs[lat_format] = self._data["latitude"]
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return self._attrs
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except KeyError:
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return
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async def async_added_to_hass(self):
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"""Register callbacks."""
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@callback
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def update():
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"""Update the state."""
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self.async_schedule_update_ha_state(True)
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self._async_unsub_dispatcher_connect = async_dispatcher_connect(
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self.hass, TOPIC_UPDATE, update
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)
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async def async_will_remove_from_hass(self):
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"""Disconnect dispatcher listener when removed."""
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if self._async_unsub_dispatcher_connect:
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self._async_unsub_dispatcher_connect()
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async def async_update(self):
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"""Get the latest data and update the state."""
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try:
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self._data = self.luftdaten.data[DATA_LUFTDATEN]
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except KeyError:
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return
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