Add availability to opentherm_gw entities (#32408)

* Add availability to opentherm_gw entities

* Address PR comment

homeassistant/components/opentherm_gw/binary_sensor.py

@@ -60,6 +60,11 @@ class OpenThermBinarySensor(BinarySensorDevice):
         )
         self._unsub_updates()
 
+    @property
+    def available(self):
+        """Return availability of the sensor."""
+        return self._state is not None
+
     @property
     def entity_registry_enabled_default(self):
         """Disable binary_sensors by default."""
@@ -68,7 +73,8 @@ class OpenThermBinarySensor(BinarySensorDevice):
     @callback
     def receive_report(self, status):
         """Handle status updates from the component."""
-        self._state = bool(status.get(self._var))
+        state = status.get(self._var)
+        self._state = None if state is None else bool(state)
         self.async_write_ha_state()
 
     @property

homeassistant/components/opentherm_gw/climate.py

@@ -63,6 +63,7 @@ class OpenThermClimate(ClimateDevice):
         self.friendly_name = gw_dev.name
         self.floor_temp = options.get(CONF_FLOOR_TEMP, DEFAULT_FLOOR_TEMP)
         self.temp_precision = options.get(CONF_PRECISION, DEFAULT_PRECISION)
+        self._available = False
         self._current_operation = None
         self._current_temperature = None
         self._hvac_mode = HVAC_MODE_HEAT
@@ -101,6 +102,7 @@ class OpenThermClimate(ClimateDevice):
     @callback
     def receive_report(self, status):
         """Receive and handle a new report from the Gateway."""
+        self._available = bool(status)
         ch_active = status.get(gw_vars.DATA_SLAVE_CH_ACTIVE)
         flame_on = status.get(gw_vars.DATA_SLAVE_FLAME_ON)
         cooling_active = status.get(gw_vars.DATA_SLAVE_COOLING_ACTIVE)
@@ -146,6 +148,11 @@ class OpenThermClimate(ClimateDevice):
             )
         self.async_write_ha_state()
 
+    @property
+    def available(self):
+        """Return availability of the sensor."""
+        return self._available
+
     @property
     def name(self):
         """Return the friendly name."""

homeassistant/components/opentherm_gw/sensor.py

@@ -61,6 +61,11 @@ class OpenThermSensor(Entity):
         _LOGGER.debug("Removing OpenTherm Gateway sensor %s", self._friendly_name)
         self._unsub_updates()
 
+    @property
+    def available(self):
+        """Return availability of the sensor."""
+        return self._value is not None
+
     @property
     def entity_registry_enabled_default(self):
         """Disable sensors by default."""