From c4d85ac41f6e278af41392a54c2812ed6fcb958e Mon Sep 17 00:00:00 2001
From: hlyi <hlyi@yahoo.com>
Date: Sun, 1 Oct 2023 06:21:26 -0500
Subject: [PATCH] Report unavailability for yolink sensor and binary_sensor
 (#100743)

---
 homeassistant/components/yolink/binary_sensor.py |  5 +++++
 homeassistant/components/yolink/const.py         |  1 +
 homeassistant/components/yolink/coordinator.py   | 12 ++++++++++--
 homeassistant/components/yolink/sensor.py        |  5 +++++
 4 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/homeassistant/components/yolink/binary_sensor.py b/homeassistant/components/yolink/binary_sensor.py
index 38ea7d46537..e65896cdd42 100644
--- a/homeassistant/components/yolink/binary_sensor.py
+++ b/homeassistant/components/yolink/binary_sensor.py
@@ -136,3 +136,8 @@ class YoLinkBinarySensorEntity(YoLinkEntity, BinarySensorEntity):
             state.get(self.entity_description.state_key)
         )
         self.async_write_ha_state()
+
+    @property
+    def available(self) -> bool:
+        """Return true is device is available."""
+        return super().available and self.coordinator.dev_online
diff --git a/homeassistant/components/yolink/const.py b/homeassistant/components/yolink/const.py
index 935889a0368..9fc4dac8ada 100644
--- a/homeassistant/components/yolink/const.py
+++ b/homeassistant/components/yolink/const.py
@@ -8,3 +8,4 @@ ATTR_DEVICE_NAME = "name"
 ATTR_DEVICE_STATE = "state"
 ATTR_DEVICE_ID = "deviceId"
 YOLINK_EVENT = f"{DOMAIN}_event"
+YOLINK_OFFLINE_TIME = 32400
diff --git a/homeassistant/components/yolink/coordinator.py b/homeassistant/components/yolink/coordinator.py
index 9055b2d044e..f2c942caab9 100644
--- a/homeassistant/components/yolink/coordinator.py
+++ b/homeassistant/components/yolink/coordinator.py
@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 import asyncio
-from datetime import timedelta
+from datetime import UTC, datetime, timedelta
 import logging
 
 from yolink.device import YoLinkDevice
@@ -12,7 +12,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
-from .const import ATTR_DEVICE_STATE, DOMAIN
+from .const import ATTR_DEVICE_STATE, DOMAIN, YOLINK_OFFLINE_TIME
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -37,6 +37,7 @@ class YoLinkCoordinator(DataUpdateCoordinator[dict]):
         )
         self.device = device
         self.paired_device = paired_device
+        self.dev_online = True
 
     async def _async_update_data(self) -> dict:
         """Fetch device state."""
@@ -44,6 +45,13 @@ class YoLinkCoordinator(DataUpdateCoordinator[dict]):
             async with asyncio.timeout(10):
                 device_state_resp = await self.device.fetch_state()
                 device_state = device_state_resp.data.get(ATTR_DEVICE_STATE)
+                device_reporttime = device_state_resp.data.get("reportAt")
+                if device_reporttime is not None:
+                    rpt_time_delta = (
+                        datetime.now(tz=UTC).replace(tzinfo=None)
+                        - datetime.strptime(device_reporttime, "%Y-%m-%dT%H:%M:%S.%fZ")
+                    ).total_seconds()
+                    self.dev_online = rpt_time_delta < YOLINK_OFFLINE_TIME
                 if self.paired_device is not None and device_state is not None:
                     paried_device_state_resp = await self.paired_device.fetch_state()
                     paried_device_state = paried_device_state_resp.data.get(
diff --git a/homeassistant/components/yolink/sensor.py b/homeassistant/components/yolink/sensor.py
index 451b486acd2..2fc4a2b0725 100644
--- a/homeassistant/components/yolink/sensor.py
+++ b/homeassistant/components/yolink/sensor.py
@@ -261,3 +261,8 @@ class YoLinkSensorEntity(YoLinkEntity, SensorEntity):
             return
         self._attr_native_value = attr_val
         self.async_write_ha_state()
+
+    @property
+    def available(self) -> bool:
+        """Return true is device is available."""
+        return super().available and self.coordinator.dev_online