Fix min/max temp and humidity for homekit_controller climate (#23421)

* Fix min/max temp and humidity for homekit_controller climate.

* Fix typo

homeassistant/components/homekit_controller/climate.py

@@ -4,7 +4,8 @@ import logging
 from homeassistant.components.climate import ClimateDevice
 from homeassistant.components.climate.const import (
     STATE_COOL, STATE_HEAT, STATE_IDLE, SUPPORT_OPERATION_MODE,
-    SUPPORT_TARGET_TEMPERATURE, SUPPORT_TARGET_HUMIDITY)
+    SUPPORT_TARGET_TEMPERATURE, SUPPORT_TARGET_HUMIDITY,
+    SUPPORT_TARGET_HUMIDITY_HIGH, SUPPORT_TARGET_HUMIDITY_LOW)
 from homeassistant.const import ATTR_TEMPERATURE, STATE_OFF, TEMP_CELSIUS
 
 from . import KNOWN_DEVICES, HomeKitEntity
@@ -43,6 +44,10 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
         self._target_temp = None
         self._current_humidity = None
         self._target_humidity = None
+        self._min_target_temp = None
+        self._max_target_temp = None
+        self._min_target_humidity = None
+        self._max_target_humidity = None
         super().__init__(*args)
 
     def get_characteristic_types(self):
@@ -86,9 +91,23 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
     def _setup_temperature_target(self, characteristic):
         self._features |= SUPPORT_TARGET_TEMPERATURE
 
+        if 'minValue' in characteristic:
+            self._min_target_temp = characteristic['minValue']
+
+        if 'maxValue' in characteristic:
+            self._max_target_temp = characteristic['maxValue']
+
     def _setup_relative_humidity_target(self, characteristic):
         self._features |= SUPPORT_TARGET_HUMIDITY
 
+        if 'minValue' in characteristic:
+            self._min_target_humidity = characteristic['minValue']
+            self._features |= SUPPORT_TARGET_HUMIDITY_LOW
+
+        if 'maxValue' in characteristic:
+            self._max_target_humidity = characteristic['maxValue']
+            self._features |= SUPPORT_TARGET_HUMIDITY_HIGH
+
     def _update_heating_cooling_current(self, value):
         self._state = MODE_HOMEKIT_TO_HASS.get(value)
 
@@ -152,6 +171,20 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
         """Return the temperature we try to reach."""
         return self._target_temp
 
+    @property
+    def min_temp(self):
+        """Return the minimum target temp."""
+        if self._max_target_temp:
+            return self._min_target_temp
+        return super().min_temp
+
+    @property
+    def max_temp(self):
+        """Return the maximum target temp."""
+        if self._max_target_temp:
+            return self._max_target_temp
+        return super().max_temp
+
     @property
     def current_humidity(self):
         """Return the current humidity."""
@@ -162,6 +195,16 @@ class HomeKitClimateDevice(HomeKitEntity, ClimateDevice):
         """Return the humidity we try to reach."""
         return self._target_humidity
 
+    @property
+    def min_humidity(self):
+        """Return the minimum humidity."""
+        return self._min_target_humidity
+
+    @property
+    def max_humidity(self):
+        """Return the maximum humidity."""
+        return self._max_target_humidity
+
     @property
     def current_operation(self):
         """Return current operation ie. heat, cool, idle."""