19 files

custom_components/pirateweather/config_flow.py

@@ -105,9 +105,9 @@ class PirateWeatherConfigFlow(ConfigFlow, domain=DOMAIN):
         if user_input is not None:
             latitude = user_input[CONF_LATITUDE]
             longitude = user_input[CONF_LONGITUDE]
-            forecastMode = "daily"
+            forecast_mode = "daily"
-            forecastPlatform = user_input[PW_PLATFORM]
+            forecast_platform = user_input[PW_PLATFORM]
-            entityNamee = user_input[CONF_NAME]
+            entity_name = user_input[CONF_NAME]
             endpoint = user_input[CONF_ENDPOINT]
 
             # Convert scan interval to timedelta
@@ -125,7 +125,7 @@ class PirateWeatherConfigFlow(ConfigFlow, domain=DOMAIN):
             # Unique value includes the location and forcastHours/ forecastDays to seperate WeatherEntity/ Sensor
             # await self.async_set_unique_id(f"pw-{latitude}-{longitude}-{forecastDays}-{forecastHours}-{forecastMode}-{entityNamee}")
             await self.async_set_unique_id(
-                f"pw-{latitude}-{longitude}-{forecastPlatform}-{forecastMode}-{entityNamee}"
+                f"pw-{latitude}-{longitude}-{forecast_platform}-{forecast_mode}-{entity_name}"
             )
 
             self._abort_if_unique_id_configured()
@@ -328,8 +328,10 @@ class PirateWeatherOptionsFlow(OptionsFlow):
 
 
 async def _is_pw_api_online(hass, api_key, lat, lon, endpoint):
-    forecastString = endpoint + "/forecast/" + api_key + "/" + str(lat) + "," + str(lon)
+    forecast_string = (
+        endpoint + "/forecast/" + api_key + "/" + str(lat) + "," + str(lon)
+    )
 
     session = async_get_clientsession(hass)
-    async with session.get(forecastString) as resp:
+    async with session.get(forecast_string) as resp:
         return resp.status

custom_components/pirateweather/forecast_models.py

@@ -26,8 +26,8 @@ class Forecast(UnicodeMixin):
         self.json = data
 
         self._alerts = []
-        for alertJSON in self.json.get("alerts", []):
+        for alert_json in self.json.get("alerts", []):
-            self._alerts.append(Alert(alertJSON))
+            self._alerts.append(Alert(alert_json))
 
     def update(self):
         """Update the forecast data by making a new request to the same URL."""
@@ -135,24 +135,24 @@ class PirateWeatherFlagsBlock(UnicodeMixin):
 class PirateWeatherDataPoint(UnicodeMixin):
     """Represent a single data point in a weather forecast, such as an hourly or daily data point."""
 
-    def __init__(self, d={}):
+    def __init__(self, d=None):
         """Initialize the data point with timestamp and weather information."""
-        self.d = d
+        self.d = d or {}
 
         try:
-            self.time = datetime.datetime.fromtimestamp(int(d["time"]))
+            self.time = datetime.datetime.fromtimestamp(int(self.d["time"]))
-            self.utime = d["time"]
+            self.utime = self.d["time"]
         except KeyError:
             pass
 
         try:
-            sr_time = int(d["sunriseTime"])
+            sr_time = int(self.d["sunriseTime"])
             self.sunriseTime = datetime.datetime.fromtimestamp(sr_time)
         except KeyError:
             self.sunriseTime = None
 
         try:
-            ss_time = int(d["sunsetTime"])
+            ss_time = int(self.d["sunsetTime"])
             self.sunsetTime = datetime.datetime.fromtimestamp(ss_time)
         except KeyError:
             self.sunsetTime = None

custom_components/pirateweather/manifest.json

@@ -10,5 +10,5 @@
   "integration_type": "service",
   "iot_class": "cloud_polling",
   "issue_tracker": "https://github.com/alexander0042/pirate-weather-ha/issues",
-  "version": "1.9.0"
+  "version": "1.9.1"
 }

custom_components/pirateweather/sensor.py

@@ -17,7 +17,6 @@ from homeassistant.components.sensor import (
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
 from homeassistant.const import (
     ATTR_ATTRIBUTION,
-    CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
     CONF_API_KEY,
     CONF_LATITUDE,
     CONF_LONGITUDE,
@@ -27,6 +26,7 @@ from homeassistant.const import (
     DEGREE,
     PERCENTAGE,
     UV_INDEX,
+    UnitOfDensity,
     UnitOfIrradiance,
     UnitOfLength,
     UnitOfPressure,
@@ -451,11 +451,11 @@ SENSOR_TYPES: dict[str, PirateWeatherSensorEntityDescription] = {
         name="Smoke",
         device_class=SensorDeviceClass.PM25,
         state_class=SensorStateClass.MEASUREMENT,
-        si_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        si_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        us_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        us_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        ca_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        ca_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        uk_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        uk_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        uk2_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        uk2_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
         suggested_display_precision=2,
         icon="mdi:smoke",
         forecast_mode=["currently", "hourly"],
@@ -465,11 +465,11 @@ SENSOR_TYPES: dict[str, PirateWeatherSensorEntityDescription] = {
         name="Smoke Max",
         device_class=SensorDeviceClass.PM25,
         state_class=SensorStateClass.MEASUREMENT,
-        si_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        si_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        us_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        us_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        ca_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        ca_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        uk_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        uk_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
-        uk2_unit=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        uk2_unit=UnitOfDensity.MICROGRAMS_PER_CUBIC_METER,
         suggested_display_precision=2,
         icon="mdi:smoke",
         forecast_mode=["daily"],
@@ -1034,22 +1034,22 @@ async def async_setup_entry(
     service_id = config_entry.unique_id or config_entry.entry_id
 
     # Round Output
-    outputRound = domain_data[PW_ROUND]
+    output_round = domain_data[PW_ROUND]
 
     sensors: list[PirateWeatherSensor] = []
 
     for condition in conditions:
         # Save units for conversion later
-        requestUnits = domain_data[CONF_UNITS]
+        request_units = domain_data[CONF_UNITS]
 
-        sensorDescription = SENSOR_TYPES[condition]
+        sensor_description = SENSOR_TYPES[condition]
 
         if condition in DEPRECATED_SENSOR_TYPES:
             _LOGGER.warning("Monitored condition %s is deprecated", condition)
 
         if (
-            not sensorDescription.forecast_mode
+            not sensor_description.forecast_mode
-            or "currently" in sensorDescription.forecast_mode
+            or "currently" in sensor_description.forecast_mode
         ):
             unique_id = f"{config_entry.unique_id}-sensor-{condition}"
             sensors.append(
@@ -1060,14 +1060,14 @@ async def async_setup_entry(
                     unique_id,
                     forecast_day=None,
                     forecast_hour=None,
-                    description=sensorDescription,
+                    description=sensor_description,
-                    requestUnits=requestUnits,
+                    request_units=request_units,
-                    outputRound=outputRound,
+                    output_round=output_round,
                     service_id=service_id,
                 )
             )
 
-        if forecast_days is not None and "daily" in sensorDescription.forecast_mode:
+        if forecast_days is not None and "daily" in sensor_description.forecast_mode:
             for forecast_day in forecast_days:
                 unique_id = (
                     f"{config_entry.unique_id}-sensor-{condition}-daily-{forecast_day}"
@@ -1080,14 +1080,14 @@ async def async_setup_entry(
                         unique_id,
                         forecast_day=int(forecast_day),
                         forecast_hour=None,
-                        description=sensorDescription,
+                        description=sensor_description,
-                        requestUnits=requestUnits,
+                        request_units=request_units,
-                        outputRound=outputRound,
+                        output_round=output_round,
                         service_id=service_id,
                     )
                 )
 
-        if forecast_hours is not None and "hourly" in sensorDescription.forecast_mode:
+        if forecast_hours is not None and "hourly" in sensor_description.forecast_mode:
             for forecast_h in forecast_hours:
                 unique_id = (
                     f"{config_entry.unique_id}-sensor-{condition}-hourly-{forecast_h}"
@@ -1100,9 +1100,9 @@ async def async_setup_entry(
                         unique_id,
                         forecast_day=None,
                         forecast_hour=int(forecast_h),
-                        description=sensorDescription,
+                        description=sensor_description,
-                        requestUnits=requestUnits,
+                        request_units=request_units,
-                        outputRound=outputRound,
+                        output_round=output_round,
                         service_id=service_id,
                     )
                 )
@@ -1117,7 +1117,7 @@ class PirateWeatherSensor(SensorEntity):
     _attr_attribution = ATTRIBUTION
     entity_description: PirateWeatherSensorEntityDescription
 
-    def __init__(
+    def __init__(  # noqa: PLR0917
         self,
         weather_coordinator: WeatherUpdateCoordinator,
         condition: str,
@@ -1126,8 +1126,8 @@ class PirateWeatherSensor(SensorEntity):
         forecast_day: int,
         forecast_hour: int,
         description: PirateWeatherSensorEntityDescription,
-        requestUnits: str,
+        request_units: str,
-        outputRound: str,
+        output_round: str,
         service_id: str,
     ) -> None:
         """Initialize the sensor."""
@@ -1149,8 +1149,8 @@ class PirateWeatherSensor(SensorEntity):
 
         self.forecast_day = forecast_day
         self.forecast_hour = forecast_hour
-        self.requestUnits = requestUnits
+        self.request_units = request_units
-        self.outputRound = outputRound
+        self.output_round = output_round
         self.type = condition
         self._icon = None
         self._alerts = None
@@ -1188,7 +1188,7 @@ class PirateWeatherSensor(SensorEntity):
     @property
     def unit_system(self):
         """Return the unit system of this entity."""
-        return self.requestUnits
+        return self.request_units
 
     @property
     def entity_picture(self) -> str | None:
@@ -1223,11 +1223,11 @@ class PirateWeatherSensor(SensorEntity):
     def extra_state_attributes(self):
         """Return the state attributes."""
         if self.type == "alerts":
-            extraATTR = self._alerts
+            extra_attr = self._alerts
-            extraATTR[ATTR_ATTRIBUTION] = ATTRIBUTION
+            extra_attr[ATTR_ATTRIBUTION] = ATTRIBUTION
         else:
-            extraATTR = {ATTR_ATTRIBUTION: ATTRIBUTION}
+            extra_attr = {ATTR_ATTRIBUTION: ATTRIBUTION}
-        return extraATTR
+        return extra_attr
 
     @property
     def native_value(self) -> StateType:
@@ -1249,15 +1249,15 @@ class PirateWeatherSensor(SensorEntity):
                         dkey = f"{attr}_{i!s}"
                     else:
                         dkey = attr
-                    alertsAttr = getattr(alert, attr)
+                    alerts_attr = getattr(alert, attr)
 
                     # Convert time to string using dt_util
-                    if isinstance(alertsAttr, int):
+                    if isinstance(alerts_attr, int):
-                        alertsAttr = dt_util.as_local(
+                        alerts_attr = dt_util.as_local(
-                            dt_util.utc_from_timestamp(alertsAttr)
+                            dt_util.utc_from_timestamp(alerts_attr)
                         ).isoformat()
 
-                    alerts[dkey] = alertsAttr
+                    alerts[dkey] = alerts_attr
 
             self._alerts = alerts
             native_val = len(data)
@@ -1342,12 +1342,12 @@ class PirateWeatherSensor(SensorEntity):
             self._icon = getattr(data, "icon", "")
 
         # If output rounding is requested, round to nearest integer
-        if self.outputRound == "Yes":
+        if self.output_round == "Yes":
-            roundingVal = 0
+            rounding_val = 0
-            roundingPrecip = 2
+            rounding_precip = 2
         else:
-            roundingVal = 2
+            rounding_val = 2
-            roundingPrecip = 4
+            rounding_precip = 4
 
         # Some state data needs to be rounded to whole values or converted to
         # percentages
@@ -1364,10 +1364,10 @@ class PirateWeatherSensor(SensorEntity):
             "sunset_time",
             "time",
         ]:
-            outState = datetime.datetime.fromtimestamp(state, datetime.UTC)
+            out_state = datetime.datetime.fromtimestamp(state, datetime.UTC)
 
         elif self.type == "fire_risk_level":
-            outState = fire_index(state)
+            out_state = fire_index(state)
         elif self.type in [
             "dew_point",
             "temperature",
@@ -1395,10 +1395,10 @@ class PirateWeatherSensor(SensorEntity):
             "solar",
             "solar_max",
         ]:
-            if roundingVal == 0:
+            if rounding_val == 0:
-                outState = int(round(state, roundingVal))
+                out_state = int(round(state, rounding_val))
             else:
-                outState = round(state, roundingVal)
+                out_state = round(state, rounding_val)
 
         elif self.type in [
             "precip_accumulation",
@@ -1423,12 +1423,12 @@ class PirateWeatherSensor(SensorEntity):
                 and self.unit_system != "us"
             ):
                 state = state * 10
-            outState = round(state, roundingPrecip)
+            out_state = round(state, rounding_precip)
 
         else:
-            outState = state
+            out_state = state
 
-        return outState
+        return out_state
 
     async def async_added_to_hass(self) -> None:
         """Connect to dispatcher listening for entity data notifications."""
@@ -1455,16 +1455,16 @@ def fire_index(fire_index):
     """Convert numeric fire index to a textual value."""
 
     if fire_index == -999:
-        outState = "N/A"
+        out_state = "N/A"
     elif fire_index >= 30:
-        outState = "Extreme"
+        out_state = "Extreme"
     elif fire_index >= 20:
-        outState = "Very High"
+        out_state = "Very High"
     elif fire_index >= 10:
-        outState = "High"
+        out_state = "High"
     elif fire_index >= 5:
-        outState = "Moderate"
+        out_state = "Moderate"
     else:
-        outState = "Low"
+        out_state = "Low"
 
-    return outState
+    return out_state

custom_components/pirateweather/weather.py

@@ -267,10 +267,10 @@ async def async_setup_entry(
     service_id = config_entry.unique_id or config_entry.entry_id
 
     # Round Output
-    outputRound = domain_data[PW_ROUND]
+    output_round = domain_data[PW_ROUND]
 
     pw_weather = PirateWeather(
-        name, unique_id, forecast_mode, weather_coordinator, outputRound, service_id
+        name, unique_id, forecast_mode, weather_coordinator, output_round, service_id
     )
 
     async_add_entities([pw_weather], False)
@@ -288,13 +288,13 @@ class PirateWeather(SingleCoordinatorWeatherEntity[WeatherUpdateCoordinator]):
         | WeatherEntityFeature.FORECAST_HOURLY
     )
 
-    def __init__(
+    def __init__(  # noqa: PLR0917
         self,
         name: str,
         unique_id,
         forecast_mode: str,
         weather_coordinator: WeatherUpdateCoordinator,
-        outputRound: str,
+        output_round: str,
         service_id: str,
     ) -> None:
         """Initialize the sensor."""
@@ -315,7 +315,7 @@ class PirateWeather(SingleCoordinatorWeatherEntity[WeatherUpdateCoordinator]):
         self._ds_hourly = self._weather_coordinator.data.hourly()
         self._ds_daily = self._weather_coordinator.data.daily()
 
-        self.outputRound = outputRound
+        self.output_round = output_round
 
         units = WEATHER_UNITS.get(
             self._weather_coordinator.requested_units, WEATHER_UNITS["si"]
@@ -369,11 +369,13 @@ class PirateWeather(SingleCoordinatorWeatherEntity[WeatherUpdateCoordinator]):
     @property
     def cloud_coverage(self):
         """Return the cloud coverage."""
-        cloudCover = (
+        cloud_cover = self._weather_coordinator.data.currently().d.get("cloudCover")
-            self._weather_coordinator.data.currently().d.get("cloudCover") * 100.0
-        )
 
-        return round(cloudCover, 2) if cloudCover != -999 else None
+        return (
+            round(cloud_cover * 100, 2)
+            if cloud_cover is not None and cloud_cover != -999
+            else None
+        )
 
     @property
     def humidity(self):
@@ -399,16 +401,16 @@ class PirateWeather(SingleCoordinatorWeatherEntity[WeatherUpdateCoordinator]):
     @property
     def native_wind_gust_speed(self):
         """Return the wind gust speed."""
-        windGust = self._weather_coordinator.data.currently().d.get("windGust")
+        wind_gust = self._weather_coordinator.data.currently().d.get("windGust")
 
-        return round(windGust, 2) if windGust != -999 else None
+        return round(wind_gust, 2) if wind_gust != -999 else None
 
     @property
     def wind_bearing(self):
         """Return the wind bearing."""
-        windBearing = self._weather_coordinator.data.currently().d.get("windBearing")
+        wind_bearing = self._weather_coordinator.data.currently().d.get("windBearing")
 
-        return windBearing if windBearing != -999 else None
+        return wind_bearing if wind_bearing != -999 else None
 
     @property
     def ozone(self):

custom_components/pirateweather/weather_update_coordinator.py

@@ -21,7 +21,7 @@ ATTRIBUTION = "Powered by Pirate Weather"
 class WeatherUpdateCoordinator(DataUpdateCoordinator):
     """Weather data update coordinator."""
 
-    def __init__(
+    def __init__(  # noqa: PLR0917
         self,
         api_key,
         latitude,
@@ -72,25 +72,27 @@ class WeatherUpdateCoordinator(DataUpdateCoordinator):
         """Poll weather data from PW."""
 
         if self.latitude == 0.0:
-            requestLatitude = self.hass.config.latitude
+            request_latitude = self.hass.config.latitude
         else:
-            requestLatitude = self.latitude
+            request_latitude = self.latitude
 
         if self.longitude == 0.0:
-            requestLongitude = self.hass.config.longitude
+            request_longitude = self.hass.config.longitude
         else:
-            requestLongitude = self.longitude
+            request_longitude = self.longitude
 
-        _LOGGER.debug("Request coordinates: %s, %s", requestLatitude, requestLongitude)
+        _LOGGER.debug(
+            "Request coordinates: %s, %s", request_latitude, request_longitude
+        )
 
-        forecastString = (
+        forecast_string = (
             self.endpoint
             + "/forecast/"
             + self._api_key
             + "/"
-            + str(requestLatitude)
+            + str(request_latitude)
             + ","
-            + str(requestLongitude)
+            + str(request_longitude)
             + "?units="
             + self.requested_units
             + "&extend=hourly"
@@ -104,12 +106,12 @@ class WeatherUpdateCoordinator(DataUpdateCoordinator):
                 m.strip() for m in self.models.split(",") if m.strip()
             )
             if exclusions:
-                forecastString += "&exclude=" + exclusions
+                forecast_string += "&exclude=" + exclusions
 
         session = async_get_clientsession(self.hass)
-        async with session.get(forecastString) as resp:
+        async with session.get(forecast_string) as resp:
             resp.raise_for_status()
-            jsonText = await resp.json()
+            json_text = await resp.json()
             headers = resp.headers
             _LOGGER.debug("Pirate Weather data update from: %s", self.endpoint)
-            return Forecast(jsonText, resp, headers)
+            return Forecast(json_text, resp, headers)

custom_components/versatile_thermostat/base_thermostat.py

@@ -205,6 +205,17 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         # Instantiate all features manager
         self._managers: list[BaseFeatureManager] = []
 
+        # Names of feature managers provided by external plugins that have
+        # already been instantiated for this thermostat. Used to avoid
+        # registering the same external manager twice (post_init + startup retry).
+        self._external_manager_names: set[str] = set()
+
+        # Instances of feature managers provided by external plugins. They are
+        # also present in ``self._managers`` (for lifecycle) but are tracked
+        # separately so they can be refreshed on every control cycle (internal
+        # managers have their own dedicated per-cycle mechanisms).
+        self._external_managers: list[BaseFeatureManager] = []
+
         self._presence_manager: FeaturePresenceManager = FeaturePresenceManager(
             self, hass
         )
@@ -237,6 +248,42 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         """Register a manager"""
         self._managers.append(manager)
 
+    def _load_external_feature_managers(self):
+        """Instantiate feature managers provided by external plugins.
+
+        Query the VTherm API registry and create one manager instance per
+        eligible thermostat (the factory decides eligibility through its
+        ``supports`` method). Managers whose plugin registers after this
+        thermostat has been built are picked up later during ``async_startup``,
+        mirroring the external proportional algorithm retry behavior.
+        """
+        api = VersatileThermostatAPI.get_vtherm_api(self.hass)
+        if api is None or not hasattr(api, "get_feature_manager_factories"):
+            return
+
+        for factory in api.get_feature_manager_factories():
+            name = factory.name
+            if name in self._external_manager_names:
+                continue
+            try:
+                if not factory.supports(self):
+                    continue
+                manager = factory.create(self)
+                manager.post_init(self._entry_infos)
+            except Exception as exc:  # pylint: disable=broad-except
+                _LOGGER.error(
+                    "%s - Error while creating external feature manager '%s': %s",
+                    self,
+                    name,
+                    exc,
+                )
+                continue
+
+            self.register_manager(manager)
+            self._external_manager_names.add(name)
+            self._external_managers.append(manager)
+            _LOGGER.info("%s - Registered external feature manager '%s'", self, name)
+
     def clean_central_config_doublon(
         self, config_entry: ConfigData, central_config: ConfigEntry | None
     ) -> dict[str, Any]:
@@ -308,6 +355,11 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         for manager in self._managers:
             manager.post_init(entry_infos)
 
+        # Instantiate feature managers provided by external plugins that are
+        # already registered at this point. Late-registered plugins are handled
+        # by a retry in async_startup.
+        self._load_external_feature_managers()
+
         self._use_central_config_temperature = entry_infos.get(
             CONF_USE_PRESETS_CENTRAL_CONFIG
         ) or (
@@ -487,6 +539,12 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         _LOGGER.debug("%s - Calling async_startup_internal", self)
         # need_write_state = False
 
+        # Retry loading external feature managers: a plugin may have registered
+        # its factory after this thermostat was built (load order between the
+        # core and the plugin is not guaranteed). Newly created managers are
+        # then started in the loop below.
+        self._load_external_feature_managers()
+
         # start listening for all managers
         for manager in self._managers:
             await manager.start_listening()
@@ -898,6 +956,30 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         """Return the temperature we try to reach."""
         return self._state_manager.current_state.target_temperature
 
+    @property
+    def regulated_target_temperature(self) -> float | None:
+        """Return the regulated target temperature used to drive the underlying.
+
+        The base implementation returns the plain target temperature. Over
+        climate thermostats override this to expose their regulated value.
+        """
+        return self.target_temperature
+
+    @property
+    def underlying_fan_modes(self) -> list[str] | None:
+        """Return the fan modes exposed by the underlying climate(s).
+
+        The base implementation returns None because most thermostats do not
+        expose an underlying climate with fan control.
+        """
+        return None
+
+    async def async_set_underlying_fan_mode(self, fan_mode: str) -> None:
+        """Send a fan mode to the underlying climate(s).
+
+        The base implementation is a no-op for thermostats without fan control.
+        """
+
     @property
     def supported_features(self) -> ClimateEntityFeature:
         """Return the list of supported features."""
@@ -1609,6 +1691,25 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         # Call specific control heating
         await self._control_heating_specific(timestamp, force)
 
+        # Refresh external feature managers (provided by plugins) on every cycle.
+        # This is done after the specific control heating so that a manager can
+        # react to the regulated target temperature (e.g. drive the underlying
+        # fan mode), and before the publication block below so that any custom
+        # attributes updated here are written to HA within the same cycle.
+        # Only external managers are refreshed here: internal managers have their
+        # own dedicated per-cycle mechanisms. A per-manager guard prevents a
+        # faulty plugin from breaking the control loop.
+        for manager in self._external_managers:
+            try:
+                await manager.refresh_state()
+            except Exception as exc:  # pylint: disable=broad-except
+                _LOGGER.error(
+                    "%s - Error while refreshing external feature manager '%s': %s",
+                    self,
+                    manager.name,
+                    exc,
+                )
+
         # Check for heating/cooling failures (only for TPI VTherms)
         await self._heating_failure_detection_manager.refresh_state()
 
@@ -1884,7 +1985,12 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         self._state_manager.add_custom_attributes(self._attr_extra_state_attributes)
 
         for manager in self._managers:
-            manager.add_custom_attributes(self._attr_extra_state_attributes)
+            # add_custom_attributes is optional for external feature managers
+            # (it is not part of the InterfaceFeatureManager contract), so call
+            # it defensively.
+            publish_attributes = getattr(manager, "add_custom_attributes", None)
+            if callable(publish_attributes):
+                publish_attributes(self._attr_extra_state_attributes)
 
     def send_event(self, event_type: EventType, data: dict):
         """Send an event"""

custom_components/versatile_thermostat/climate.py

@@ -125,7 +125,7 @@ async def async_setup_entry(
                 ["None", "Low", "Medium", "High", "Turbo"]
             ),
         },
-        "service_set_auto_fan_mode",
+        "service_set_auto_fan_mode_deprecated",
     )
 
     platform.async_register_entity_service(

custom_components/versatile_thermostat/manifest.json

@@ -19,9 +19,9 @@
   "requirements": [
     "numpy",
     "scipy",
-    "vtherm_api>=0.3.0"
+    "vtherm_api>=0.4.0"
   ],
   "ssdp": [],
-  "version": "10.1.0",
+  "version": "10.2.0",
   "zeroconf": []
 }

custom_components/versatile_thermostat/services.yaml

@@ -113,7 +113,7 @@ set_auto_regulation_mode:
 
 set_auto_fan_mode:
     name: Set Auto Fan mode
-    description: Change the mode of auto-fan (only for VTherm over climate)
+    description: Deprecated when using the vtherm_auto_fan_extended plugin. Without the plugin, legacy core behavior is kept.
     target:
         entity:
             integration: versatile_thermostat

custom_components/versatile_thermostat/thermostat_climate.py

@@ -8,6 +8,7 @@ from datetime import timedelta, datetime
 
 from homeassistant.const import STATE_UNAVAILABLE, STATE_UNKNOWN
 from homeassistant.core import Event, HomeAssistant, State, callback
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.event import async_track_state_change_event, async_track_time_interval, EventStateChangedData, async_call_later
 from homeassistant.components.climate import (
     HVACAction,
@@ -27,6 +28,9 @@ from .vtherm_hvac_mode import VThermHvacMode
 
 _LOGGER = get_vtherm_logger(__name__)
 
+AUTO_FAN_PLUGIN_DOMAIN = "vtherm_auto_fan_extended"
+AUTO_FAN_PLUGIN_TARGET_VTHERM_KEY = "target_vtherm_unique_id"
+
 HVAC_ACTION_ON = [  # pylint: disable=invalid-name
     HVACAction.COOLING,
     HVACAction.DRYING,
@@ -465,8 +469,8 @@ class ThermostatOverClimate(BaseThermostat[UnderlyingClimate]):
                 return None
 
         def determine_fan_mode_contains_speed(fan_modes: list[str]) -> bool:
-            """Determine if the fan_modes contains speed modes by searching for the keywords "low"/"1"/"one"/"speed_1"."""
+            """Determine if the fan_modes contains speed modes by searching for the keywords "low"/"1"/"one"/"speed_1"/"on_low"."""
-            for val in ["low", "1", "one", "speed_1"]:
+            for val in ["low", "1", "one", "speed_1", "on_low"]:
                 if find_fan_mode(fan_modes, val):
                     return True
             return False
@@ -482,6 +486,8 @@ class ThermostatOverClimate(BaseThermostat[UnderlyingClimate]):
                 index = speed_modes.index("one")
             elif "speed_1" in speed_modes:
                 index = speed_modes.index("speed_1")
+            elif "on_low" in speed_modes:
+                index = speed_modes.index("on_low")
 
             if index > -1 and index >= len(speed_modes) / 2:
                 speed_modes.reverse()
@@ -1008,6 +1014,20 @@ class ThermostatOverClimate(BaseThermostat[UnderlyingClimate]):
         """Get the regulated target temperature"""
         return self._regulated_target_temp
 
+    @property
+    def regulated_target_temperature(self) -> float | None:
+        """Return the regulated target temperature used to drive the underlying."""
+        return self._regulated_target_temp
+
+    @property
+    def underlying_fan_modes(self) -> list[str] | None:
+        """Return the fan modes exposed by the underlying climate(s)."""
+        return self.fan_modes
+
+    async def async_set_underlying_fan_mode(self, fan_mode: str) -> None:
+        """Send a fan mode to the underlying climate(s)."""
+        await self.async_set_fan_mode(fan_mode)
+
     @property
     def is_regulated(self) -> bool:
         """Check if the ThermostatOverClimate is regulated"""
@@ -1306,6 +1326,49 @@ class ThermostatOverClimate(BaseThermostat[UnderlyingClimate]):
         self.update_custom_attributes()
         self.async_write_ha_state()
 
+    async def service_set_auto_fan_mode_deprecated(self, auto_fan_mode: str):
+        """Deprecated service handler for auto fan mode.
+
+        Auto fan is now managed by the vtherm_auto_fan_extended plugin.
+        """
+        config_entries = getattr(self._hass, "config_entries", None)
+        plugin_is_configured = False
+        if config_entries is not None:
+            try:
+                plugin_entries = config_entries.async_entries(AUTO_FAN_PLUGIN_DOMAIN)
+            except Exception:  # pylint: disable=broad-except
+                plugin_entries = []
+
+            # If at least one entry targets this VTherm, plugin takes ownership.
+            plugin_is_configured = any(
+                entry.data.get(AUTO_FAN_PLUGIN_TARGET_VTHERM_KEY) == self.unique_id
+                for entry in plugin_entries
+            )
+
+            # Backward compatibility: old entries without target still mean plugin ownership.
+            if not plugin_is_configured and plugin_entries:
+                plugin_is_configured = any(
+                    AUTO_FAN_PLUGIN_TARGET_VTHERM_KEY not in entry.data
+                    for entry in plugin_entries
+                )
+
+        # If plugin is not configured for this VTherm, keep legacy core behavior.
+        if not plugin_is_configured:
+            await self.service_set_auto_fan_mode(auto_fan_mode)
+            return
+
+        _LOGGER.warning(
+            "%s - set_auto_fan_mode is deprecated in core and managed by the "
+            "vtherm_auto_fan_extended plugin (requested: %s)",
+            self,
+            auto_fan_mode,
+        )
+        raise HomeAssistantError(
+            "The set_auto_fan_mode service is now managed by the "
+            "vtherm_auto_fan_extended plugin and is no longer available in "
+            "Versatile Thermostat core."
+        )
+
     @overrides
     async def async_turn_off(self) -> None:
         """Turn off the climate entity."""