Restore ONVIF sensors (#70393)

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>

homeassistant/components/onvif/sensor.py

@@ -1,13 +1,18 @@
 """Support for ONVIF binary sensors."""
 from __future__ import annotations
 
-from homeassistant.components.sensor import SensorEntity
+from datetime import date, datetime
+
+from homeassistant.components.sensor import RestoreSensor
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import StateType
 
 from .base import ONVIFBaseEntity
 from .const import DOMAIN
+from .device import ONVIFDevice
 
 
 async def async_setup_entry(
@@ -23,6 +28,11 @@ async def async_setup_entry(
         for event in device.events.get_platform("sensor")
     }
 
+    ent_reg = er.async_get(hass)
+    for entry in er.async_entries_for_config_entry(ent_reg, config_entry.entry_id):
+        if entry.domain == "sensor" and entry.unique_id not in entities:
+            entities[entry.unique_id] = ONVIFSensor(entry.unique_id, device, entry)
+
     async_add_entities(entities.values())
 
     @callback
@@ -40,26 +50,41 @@ async def async_setup_entry(
     return True
 
 
-class ONVIFSensor(ONVIFBaseEntity, SensorEntity):
+class ONVIFSensor(ONVIFBaseEntity, RestoreSensor):
     """Representation of a ONVIF sensor event."""
 
     _attr_should_poll = False
 
-    def __init__(self, uid, device):
+    def __init__(self, uid, device: ONVIFDevice, entry: er.RegistryEntry | None = None):
         """Initialize the ONVIF binary sensor."""
-        event = device.events.get_uid(uid)
-        self._attr_device_class = event.device_class
-        self._attr_entity_category = event.entity_category
-        self._attr_entity_registry_enabled_default = event.entity_enabled
-        self._attr_name = event.name
-        self._attr_native_unit_of_measurement = event.unit_of_measurement
-        self._attr_native_value = event.value
         self._attr_unique_id = uid
+        if entry is not None:
+            self._attr_device_class = entry.original_device_class
+            self._attr_entity_category = entry.entity_category
+            self._attr_name = entry.name
+            self._attr_native_unit_of_measurement = entry.unit_of_measurement
+        else:
+            event = device.events.get_uid(uid)
+            self._attr_device_class = event.device_class
+            self._attr_entity_category = event.entity_category
+            self._attr_entity_registry_enabled_default = event.entity_enabled
+            self._attr_name = f"{device.name} {event.name}"
+            self._attr_native_unit_of_measurement = event.unit_of_measurement
+            self._attr_native_value = event.value
 
         super().__init__(device)
 
+    @property
+    def native_value(self) -> StateType | date | datetime:
+        """Return the value reported by the sensor."""
+        if (event := self.device.events.get_uid(self._attr_unique_id)) is not None:
+            return event.value
+        return self._attr_native_value
+
     async def async_added_to_hass(self):
         """Connect to dispatcher listening for entity data notifications."""
         self.async_on_remove(
             self.device.events.async_add_listener(self.async_write_ha_state)
         )
+        if (last_sensor_data := await self.async_get_last_sensor_data()) is not None:
+            self._attr_native_value = last_sensor_data.native_value