Add cover platform to switchbot (#56414)

Co-authored-by: J. Nick Koston <nick@koston.org>

homeassistant/components/switchbot/entity.py

@@ -0,0 +1,46 @@
+"""An abstract class common to all Switchbot entities."""
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any
+
+from homeassistant.helpers import device_registry as dr
+from homeassistant.helpers.entity import DeviceInfo, Entity
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import MANUFACTURER
+from .coordinator import SwitchbotDataUpdateCoordinator
+
+
+class SwitchbotEntity(CoordinatorEntity, Entity):
+    """Generic entity encapsulating common features of Switchbot device."""
+
+    def __init__(
+        self,
+        coordinator: SwitchbotDataUpdateCoordinator,
+        idx: str | None,
+        mac: str,
+        name: str,
+    ) -> None:
+        """Initialize the entity."""
+        super().__init__(coordinator)
+        self._last_run_success: bool | None = None
+        self._idx = idx
+        self._mac = mac
+        self._attr_name = name
+        self._attr_device_info: DeviceInfo = {
+            "connections": {(dr.CONNECTION_NETWORK_MAC, self._mac)},
+            "name": self._attr_name,
+            "model": self.data["modelName"],
+            "manufacturer": MANUFACTURER,
+        }
+
+    @property
+    def data(self) -> dict[str, Any]:
+        """Return coordinator data for this entity."""
+        return self.coordinator.data[self._idx]
+
+    @property
+    def extra_state_attributes(self) -> Mapping[Any, Any]:
+        """Return the state attributes."""
+        return {"last_run_success": self._last_run_success, "mac_address": self._mac}