implement away mode

homeassistant/components/thermostat/honeywell.py

@@ -6,8 +6,9 @@ Adds support for Honeywell Round Connected and Honeywell Evohome thermostats.
 For more details about this platform, please refer to the documentation at
 https://home-assistant.io/components/thermostat.honeywell/
 """
-import socket
 import logging
+import socket
+
 from homeassistant.components.thermostat import ThermostatDevice
 from homeassistant.const import (CONF_USERNAME, CONF_PASSWORD, TEMP_CELCIUS)
 
@@ -15,6 +16,7 @@ REQUIREMENTS = ['evohomeclient==0.2.4']
 
 _LOGGER = logging.getLogger(__name__)
 
+CONF_AWAY_TEMP = "away_temperature"
 
 # pylint: disable=unused-argument
 def setup_platform(hass, config, add_devices, discovery_info=None):
@@ -23,17 +25,22 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
 
     username = config.get(CONF_USERNAME)
     password = config.get(CONF_PASSWORD)
-
+    try:
+        away_temp = float(config.get(CONF_AWAY_TEMP,16))
+    except ValueError:
+        _LOGGER.error("value entered for item {} should convert to a number"
+                      .format(CONF_AWAY_TEMP))
     if username is None or password is None:
         _LOGGER.error("Missing required configuration items %s or %s",
                       CONF_USERNAME, CONF_PASSWORD)
         return False
 
     evo_api = EvohomeClient(username, password)
+
     try:
         zones = evo_api.temperatures(force_refresh=True)
         for i, zone in enumerate(zones):
-            add_devices([RoundThermostat(evo_api, zone['id'], i == 0)])
+            add_devices([RoundThermostat(evo_api, zone['id'], i == 0,away_temp)])
     except socket.error:
         _LOGGER.error(
                 "Connection error logging into the honeywell evohome web service"
@@ -44,7 +51,7 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
 class RoundThermostat(ThermostatDevice):
     """ Represents a Honeywell Round Connected thermostat. """
 
-    def __init__(self, device, zone_id, master):
+    def __init__(self, device, zone_id, master, away_temp):
         self.device = device
         self._current_temperature = None
         self._target_temperature = None
@@ -52,6 +59,8 @@ class RoundThermostat(ThermostatDevice):
         self._id = zone_id
         self._master = master
         self._is_dhw = False
+        self._away_temp = away_temp
+        self._away = False
         self.update()
 
     @property
@@ -80,6 +89,25 @@ class RoundThermostat(ThermostatDevice):
         """ Set new target temperature """
         self.device.set_temperature(self._name, temperature)
 
+    @property
+    def is_away_mode_on(self):
+        """ Returns if away mode is on. """
+        return self._away
+
+    def turn_away_mode_on(self):
+        """ Turns away on.
+         Evohome does have a proprietary away mode, but it doesn't really work
+         the way it should. For example: If you set a temperature manually
+         it doesn't get overwritten when away mode is switched on.
+         """
+        self._away = True
+        self.device.set_temperature(self._name, self._away_temp)
+
+    def turn_away_mode_off(self):
+        """ Turns away off. """
+        self._away = False
+        self.device.cancel_temp_override(self._name)
+
     def update(self):
         try:
             # Only refresh if this is the "master" device,