Coordinate all august detail and activity updates (#32249)

* Removing polling from august

* Now using subscribers to the detail and activity

* Fix hash to list keys

* continue to the next house if one fails

* Add async_signal_device_id_update

* Fix double initial update

* Handle self.hass not being available until after async_added_to_hass

* Remove not needed await

* Fix regression with device name

homeassistant/components/august/entity.py

@@ -0,0 +1,67 @@
+"""Base class for August entity."""
+
+import logging
+
+from homeassistant.core import callback
+
+from . import DEFAULT_NAME, DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class AugustEntityMixin:
+    """Base implementation for August device."""
+
+    def __init__(self, data, device):
+        """Initialize an August device."""
+        super().__init__()
+        self._data = data
+        self._device = device
+        self._undo_dispatch_subscription = None
+
+    @property
+    def should_poll(self):
+        """Return False, updates are controlled via the hub."""
+        return False
+
+    @property
+    def _device_id(self):
+        return self._device.device_id
+
+    @property
+    def _detail(self):
+        return self._data.get_device_detail(self._device.device_id)
+
+    @property
+    def device_info(self):
+        """Return the device_info of the device."""
+        return {
+            "identifiers": {(DOMAIN, self._device_id)},
+            "name": self._device.device_name,
+            "manufacturer": DEFAULT_NAME,
+            "sw_version": self._detail.firmware_version,
+            "model": self._detail.model,
+        }
+
+    @callback
+    def _update_from_data_and_write_state(self):
+        self._update_from_data()
+        self.async_write_ha_state()
+
+    async def async_added_to_hass(self):
+        """Subscribe to updates."""
+        self._data.async_subscribe_device_id(
+            self._device_id, self._update_from_data_and_write_state
+        )
+        self._data.activity_stream.async_subscribe_device_id(
+            self._device_id, self._update_from_data_and_write_state
+        )
+
+    async def async_will_remove_from_hass(self):
+        """Undo subscription."""
+        self._data.async_unsubscribe_device_id(
+            self._device_id, self._update_from_data_and_write_state
+        )
+        self._data.activity_stream.async_unsubscribe_device_id(
+            self._device_id, self._update_from_data_and_write_state
+        )