Mark Reolink camera entities as unavailable when camera is offline (#127127)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

homeassistant/components/reolink/entity.py

@@ -155,6 +155,11 @@ class ReolinkChannelCoordinatorEntity(ReolinkHostCoordinatorEntity):
                 configuration_url=self._conf_url,
             )
 
+    @property
+    def available(self) -> bool:
+        """Return True if entity is available."""
+        return super().available and self._host.api.camera_online(self._channel)
+
     async def async_added_to_hass(self) -> None:
         """Entity created."""
         await super().async_added_to_hass()

tests/components/reolink/conftest.py

@@ -92,6 +92,7 @@ def reolink_connect_class() -> Generator[MagicMock]:
         host_mock.camera_sw_version.return_value = "v1.1.0.0.0.0000"
         host_mock.camera_sw_version_update_required.return_value = False
         host_mock.camera_uid.return_value = TEST_UID_CAM
+        host_mock.camera_online.return_value = True
         host_mock.channel_for_uid.return_value = 0
         host_mock.get_encoding.return_value = "h264"
         host_mock.firmware_update_available.return_value = False

tests/components/reolink/test_switch.py

@@ -17,6 +17,7 @@ from homeassistant.const import (
     SERVICE_TURN_ON,
     STATE_OFF,
     STATE_ON,
+    STATE_UNAVAILABLE,
     Platform,
 )
 from homeassistant.core import HomeAssistant
@@ -302,6 +303,15 @@ async def test_switch(
 
     reolink_connect.set_recording.reset_mock(side_effect=True)
 
+    reolink_connect.camera_online.return_value = False
+    freezer.tick(DEVICE_UPDATE_INTERVAL)
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done()
+
+    assert hass.states.get(entity_id).state == STATE_UNAVAILABLE
+
+    reolink_connect.camera_online.return_value = True
+
 
 async def test_host_switch(
     hass: HomeAssistant,