Split Withings common file out to their own file (#100150)

* Split common out in logical pieces

* Split common out in logical pieces

* Split common out in logical pieces

homeassistant/components/withings/entity.py

@@ -0,0 +1,100 @@
+"""Base entity for Withings."""
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Any
+
+from withings_api.common import GetSleepSummaryField, MeasureType, NotifyAppli
+
+from homeassistant.core import callback
+from homeassistant.helpers.device_registry import DeviceInfo
+from homeassistant.helpers.entity import Entity, EntityDescription
+
+from .common import DataManager, UpdateType
+from .const import DOMAIN, Measurement
+
+
+@dataclass
+class WithingsEntityDescriptionMixin:
+    """Mixin for describing withings data."""
+
+    measurement: Measurement
+    measure_type: NotifyAppli | GetSleepSummaryField | MeasureType
+    update_type: UpdateType
+
+
+@dataclass
+class WithingsEntityDescription(EntityDescription, WithingsEntityDescriptionMixin):
+    """Immutable class for describing withings data."""
+
+
+class BaseWithingsSensor(Entity):
+    """Base class for withings sensors."""
+
+    _attr_should_poll = False
+    entity_description: WithingsEntityDescription
+    _attr_has_entity_name = True
+
+    def __init__(
+        self, data_manager: DataManager, description: WithingsEntityDescription
+    ) -> None:
+        """Initialize the Withings sensor."""
+        self._data_manager = data_manager
+        self.entity_description = description
+        self._attr_unique_id = (
+            f"withings_{data_manager.user_id}_{description.measurement.value}"
+        )
+        self._state_data: Any | None = None
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, str(data_manager.user_id))},
+            name=data_manager.profile,
+        )
+
+    @property
+    def available(self) -> bool:
+        """Return True if entity is available."""
+        if self.entity_description.update_type == UpdateType.POLL:
+            return self._data_manager.poll_data_update_coordinator.last_update_success
+
+        if self.entity_description.update_type == UpdateType.WEBHOOK:
+            return self._data_manager.webhook_config.enabled and (
+                self.entity_description.measurement
+                in self._data_manager.webhook_update_coordinator.data
+            )
+
+        return True
+
+    @callback
+    def _on_poll_data_updated(self) -> None:
+        self._update_state_data(
+            self._data_manager.poll_data_update_coordinator.data or {}
+        )
+
+    @callback
+    def _on_webhook_data_updated(self) -> None:
+        self._update_state_data(
+            self._data_manager.webhook_update_coordinator.data or {}
+        )
+
+    def _update_state_data(self, data: dict[Measurement, Any]) -> None:
+        """Update the state data."""
+        self._state_data = data.get(self.entity_description.measurement)
+        self.async_write_ha_state()
+
+    async def async_added_to_hass(self) -> None:
+        """Register update dispatcher."""
+        if self.entity_description.update_type == UpdateType.POLL:
+            self.async_on_remove(
+                self._data_manager.poll_data_update_coordinator.async_add_listener(
+                    self._on_poll_data_updated
+                )
+            )
+            self._on_poll_data_updated()
+
+        elif self.entity_description.update_type == UpdateType.WEBHOOK:
+            self.async_on_remove(
+                self._data_manager.webhook_update_coordinator.async_add_listener(
+                    self._on_webhook_data_updated
+                )
+            )
+            self._on_webhook_data_updated()