Merge pull request #1322 from w1ll1am23/nest_weather_component

Added support for nest current weather conditions

homeassistant/components/sensor/nest.py

@@ -21,7 +21,18 @@ SENSOR_TYPES = ['humidity',
                 'last_connection',
                 'battery_level']
 
-SENSOR_UNITS = {'humidity': '%', 'battery_level': 'V'}
+WEATHER_VARIABLES = ['weather_condition', 'weather_temperature',
+                     'weather_humidity',
+                     'wind_speed', 'wind_direction']
+
+JSON_VARIABLE_NAMES = {'weather_humidity': 'humidity',
+                       'weather_temperature': 'temperature',
+                       'weather_condition': 'condition',
+                       'wind_speed': 'kph',
+                       'wind_direction': 'direction'}
+
+SENSOR_UNITS = {'humidity': '%', 'battery_level': 'V',
+                'kph': 'kph', 'temperature': '°C'}
 
 SENSOR_TEMP_TYPES = ['temperature',
                      'target',
@@ -45,6 +56,11 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
                         add_devices([NestTempSensor(structure,
                                                     device,
                                                     variable)])
+                    elif variable in WEATHER_VARIABLES:
+                        json_variable = JSON_VARIABLE_NAMES.get(variable, None)
+                        add_devices([NestWeatherSensor(structure,
+                                                       device,
+                                                       json_variable)])
                     else:
                         logger.error('Nest sensor type: "%s" does not exist',
                                      variable)
@@ -109,3 +125,20 @@ class NestTempSensor(NestSensor):
             return None
 
         return round(temp, 1)
+
+
+class NestWeatherSensor(NestSensor):
+    """ Represents a basic Nest Weather Conditions sensor. """
+
+    @property
+    def state(self):
+        """ Returns the state of the sensor. """
+        if self.variable == 'kph' or self.variable == 'direction':
+            return getattr(self.structure.weather.current.wind, self.variable)
+        else:
+            return getattr(self.structure.weather.current, self.variable)
+
+    @property
+    def unit_of_measurement(self):
+        """ Unit the value is expressed in. """
+        return SENSOR_UNITS.get(self.variable, None)