initial commit for ecobee thermostat component.

homeassistant/components/sensor/ecobee.py

@@ -0,0 +1,101 @@
+"""
+homeassistant.components.sensor.ecobee
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+This sensor component requires that the Ecobee Thermostat
+component be setup first. This component shows remote
+ecobee sensor data.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.ecobee/
+"""
+from homeassistant.helpers.entity import Entity
+import json
+import logging
+import os
+
+SENSOR_TYPES = {
+    'temperature': ['Temperature', '°F'],
+    'humidity': ['Humidity', '%'],
+    'occupancy': ['Occupancy', '']
+}
+
+_LOGGER = logging.getLogger(__name__)
+
+ECOBEE_CONFIG_FILE = 'ecobee.conf'
+
+
+def config_from_file(filename, config=None):
+    ''' Small configuration file management function '''
+    if config:
+        # We're writing configuration
+        try:
+            with open(filename, 'w') as fdesc:
+                fdesc.write(json.dumps(config))
+        except IOError as error:
+            print(error)
+            return False
+        return True
+    else:
+        # We're reading config
+        if os.path.isfile(filename):
+            try:
+                with open(filename, 'r') as fdesc:
+                    return json.loads(fdesc.read())
+            except IOError as error:
+                return False
+        else:
+            return {}
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """ Sets up the sensors. """
+    config = config_from_file(hass.config.path(ECOBEE_CONFIG_FILE))
+    dev = list()
+    for name, data in config['sensors'].items():
+        if 'temp' in data:
+            dev.append(EcobeeSensor(name, 'temperature', hass))
+        if 'humidity' in data:
+            dev.append(EcobeeSensor(name, 'humidity', hass))
+        if 'occupancy' in data:
+            dev.append(EcobeeSensor(name, 'occupancy', hass))
+
+    add_devices(dev)
+
+
+class EcobeeSensor(Entity):
+    """ An ecobee sensor. """
+
+    def __init__(self, sensor_name, sensor_type, hass):
+        self._name = sensor_name + ' ' + SENSOR_TYPES[sensor_type][0]
+        self.sensor_name = sensor_name
+        self.hass = hass
+        self.type = sensor_type
+        self._state = None
+        self._unit_of_measurement = SENSOR_TYPES[sensor_type][1]
+        self.update()
+
+    @property
+    def name(self):
+        return self._name.rstrip()
+
+    @property
+    def state(self):
+        """ Returns the state of the device. """
+        return self._state
+
+    @property
+    def unit_of_measurement(self):
+        return self._unit_of_measurement
+
+    def update(self):
+        config = config_from_file(self.hass.config.path(ECOBEE_CONFIG_FILE))
+        try:
+            data = config['sensors'][self.sensor_name]
+            if self.type == 'temperature':
+                self._state = data['temp']
+            elif self.type == 'humidity':
+                self._state = data['humidity']
+            elif self.type == 'occupancy':
+                self._state = data['occupancy']
+        except KeyError:
+            print("Error updating ecobee sensors.")