fix: hvac_action set to fan when active

Fixes #247

custom_components/dual_smart_thermostat/hvac_device/fan_device.py

@@ -1,6 +1,6 @@
 import logging
 
-from homeassistant.components.climate import HVACMode
+from homeassistant.components.climate import HVACAction, HVACMode
 
 from custom_components.dual_smart_thermostat.hvac_device.cooler_device import (
     CoolerDevice,
@@ -36,3 +36,11 @@ def __init__(
 
         if self.features.is_fan_uses_outside_air:
             self.fan_air_surce_outside = True
+
+    @property
+    def hvac_action(self) -> HVACAction:
+        if self.hvac_mode == HVACMode.OFF:
+            return HVACAction.OFF
+        if self.is_active:
+            return HVACAction.FAN
+        return HVACAction.IDLE

tests/test_fan_mode.py

@@ -2519,13 +2519,15 @@ async def test_set_target_temp_ac_on_after_fan_tolerance_2(
 
     assert hass.states.get(cooler_switch).state == STATE_OFF
     assert hass.states.get(fan_switch).state == STATE_ON
+    assert hass.states.get(common.ENTITY).attributes["hvac_action"] == HVACAction.FAN
 
     # within hot_tolerance and fan_hot_tolerance
     setup_sensor(hass, 20.5)
     await hass.async_block_till_done()
 
     assert hass.states.get(cooler_switch).state == STATE_OFF
     assert hass.states.get(fan_switch).state == STATE_ON
+    assert hass.states.get(common.ENTITY).attributes["hvac_action"] == HVACAction.FAN
 
     # within hot_tolerance and fan_hot_tolerance
     setup_sensor(hass, 20.7)
@@ -2540,6 +2542,9 @@ async def test_set_target_temp_ac_on_after_fan_tolerance_2(
 
     assert hass.states.get(cooler_switch).state == STATE_ON
     assert hass.states.get(fan_switch).state == STATE_OFF
+    assert (
+        hass.states.get(common.ENTITY).attributes["hvac_action"] == HVACAction.COOLING
+    )
 
 
 async def test_set_target_temp_ac_on_ignore_fan_tolerance(