Adjust the fan entity icon to it's state in ViCare integration (#131553)

homeassistant/components/vicare/fan.py

@@ -173,6 +173,30 @@ class ViCareFan(ViCareEntity, FanEntity):
         # Viessmann ventilation unit cannot be turned off
         return True
 
+    @property
+    def icon(self) -> str | None:
+        """Return the icon to use in the frontend."""
+        if hasattr(self, "_attr_preset_mode"):
+            if self._attr_preset_mode == VentilationMode.VENTILATION:
+                return "mdi:fan-clock"
+            if self._attr_preset_mode in [
+                VentilationMode.SENSOR_DRIVEN,
+                VentilationMode.SENSOR_OVERRIDE,
+            ]:
+                return "mdi:fan-auto"
+            if self._attr_preset_mode == VentilationMode.PERMANENT:
+                if self._attr_percentage == 0:
+                    return "mdi:fan-off"
+                if self._attr_percentage is not None:
+                    level = 1 + ORDERED_NAMED_FAN_SPEEDS.index(
+                        percentage_to_ordered_list_item(
+                            ORDERED_NAMED_FAN_SPEEDS, self._attr_percentage
+                        )
+                    )
+                    if level < 4:  # fan-speed- only supports 1-3
+                        return f"mdi:fan-speed-{level}"
+        return "mdi:fan"
+
     def set_percentage(self, percentage: int) -> None:
         """Set the speed of the fan, as a percentage."""
         if self._attr_preset_mode != str(VentilationMode.PERMANENT):

tests/components/vicare/snapshots/test_fan.ambr

@@ -29,7 +29,7 @@
     'options': dict({
     }),
     'original_device_class': None,
-    'original_icon': None,
+    'original_icon': 'mdi:fan',
     'original_name': 'Ventilation',
     'platform': 'vicare',
     'previous_unique_id': None,
@@ -43,6 +43,7 @@
   StateSnapshot({
     'attributes': ReadOnlyDict({
       'friendly_name': 'model0 Ventilation',
+      'icon': 'mdi:fan',
       'percentage': 0,
       'percentage_step': 25.0,
       'preset_mode': None,