Initial code for generic thermostat range support and nest compliance

homeassistant/components/thermostat/__init__.py

@@ -27,6 +27,9 @@ ATTR_CURRENT_TEMPERATURE = "current_temperature"
 ATTR_AWAY_MODE = "away_mode"
 ATTR_MAX_TEMP = "max_temp"
 ATTR_MIN_TEMP = "min_temp"
+ATTR_TEMPERATURE_LOW = "target_temp_low"
+ATTR_TEMPERATURE_HIGH = "target_temp_high"
+ATTR_OPERATION = "current_operation"
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -111,7 +114,7 @@ class ThermostatDevice(Entity):
     @property
     def state(self):
         """ Returns the current state. """
-        return self.target_temperature
+        return self.operation
 
     @property
     def device_state_attributes(self):
@@ -134,7 +137,20 @@ class ThermostatDevice(Entity):
                                          user_unit), 0),
             ATTR_MAX_TEMP: round(convert(self.max_temp,
                                          thermostat_unit,
-                                         user_unit), 0)
+                                         user_unit), 0),
+            ATTR_TEMPERATURE: round(convert(self.target_temperature,
+                                            thermostat_unit,
+                                            user_unit), 0),
+            ATTR_TEMPERATURE_LOW: round(convert(self.target_temperature_low,
+                                                thermostat_unit,
+                                                user_unit), 0),
+            ATTR_TEMPERATURE_HIGH: round(convert(self.target_temperature_high,
+                                                 thermostat_unit,
+                                                 user_unit), 0),
+            ATTR_OPERATION: round(convert(self.operation,
+                                          thermostat_unit,
+                                          user_unit), 0)
+
         }
 
         is_away = self.is_away_mode_on
@@ -159,11 +175,26 @@ class ThermostatDevice(Entity):
         """ Returns the current temperature. """
         raise NotImplementedError
 
+    @property
+    def operation(self):
+        """ Returns current operation ie. heat, cool, idle """
+        return NotImplementedError
+
     @property
     def target_temperature(self):
         """ Returns the temperature we try to reach. """
         raise NotImplementedError
 
+    @property
+    def target_temperature_low(self):
+        """ Returns the lower bound temperature we try to reach. """
+        return self.target_temperature
+
+    @property
+    def target_temperature_high(self):
+        """ Returns the upper bound temperature we try to reach. """
+        return self.target_temperature
+
     @property
     def is_away_mode_on(self):
         """

homeassistant/components/thermostat/nest.py

@@ -8,6 +8,10 @@ import logging
 from homeassistant.components.thermostat import ThermostatDevice
 from homeassistant.const import (CONF_USERNAME, CONF_PASSWORD, TEMP_CELCIUS)
 
+STATE_HEAT = "heat"
+STATE_COOL = "cool"
+STATE_IDLE = "idle"
+
 REQUIREMENTS = ['python-nest==2.6.0']
 
 
@@ -83,25 +87,52 @@ class NestThermostat(ThermostatDevice):
         """ Returns the current temperature. """
         return round(self.device.temperature, 1)
 
+    @property
+    def operation(self):
+        """ Returns current operation ie. heat, cool, idle """
+        if self.device.hvac_ac_state is True:
+            return STATE_COOL
+        elif self.device.hvac_heater_state is True:
+            return STATE_HEAT
+        else:
+            return STATE_IDLE
+
     @property
     def target_temperature(self):
         """ Returns the temperature we try to reach. """
         target = self.device.target
 
-        if isinstance(target, tuple):
+        if self.device.mode == 'range':
             low, high = target
-
+            if self.operation == STATE_COOL:
-            if self.current_temperature < low:
-                temp = low
-            elif self.current_temperature > high:
                 temp = high
+            elif self.operation == STATE_HEAT:
+                temp = low
             else:
-                temp = (low + high)/2
+                range_average = (low + high)/2
+                if self.current_temperature < range_average:
+                    temp = low
+                elif self.current_temperature > range_average:
+                    temp = high
         else:
             temp = target
 
         return round(temp, 1)
 
+    @property
+    def target_temperature_low(self):
+        """ Returns the lower bound temperature we try to reach. """
+        if self.device.mode == 'range':
+            return self.device.target["low"]
+        return round(self.target_temperature, 1)
+
+    @property
+    def target_temperature_high(self):
+        """ Returns the upper bound temperature we try to reach. """
+        if self.device.mode == 'range':
+            return self.device.target["high"]
+        return round(self.target_temperature, 1)
+
     @property
     def is_away_mode_on(self):
         """ Returns if away mode is on. """
@@ -109,6 +140,11 @@ class NestThermostat(ThermostatDevice):
 
     def set_temperature(self, temperature):
         """ Set new target temperature """
+        if self.device.mode == 'range':
+            if self.target_temperature == self.target_temperature_low:
+                temperature = (temperature, self.target_temperature_high)
+            elif self.target_temperature == self.target_temperature_high:
+                temperature = (self.target_temperature_low, temperature)
         self.device.target = temperature
 
     def turn_away_mode_on(self):