Added Osram lightify platform (#2170)

* Added Osram Lightify light component

* Added color temperature and fade transition support to Osram Lightify

* Added Osram Lightify light component

* Added color temperature and fade transition support to Osram Lightify

* Updated docstring

* Added osramlightify to ignore list on coveragerc and updated docstrings

* Fixed linting issues

.coveragerc

@@ -114,6 +114,7 @@ omit =
     homeassistant/components/light/hyperion.py
     homeassistant/components/light/lifx.py
     homeassistant/components/light/limitlessled.py
+    homeassistant/components/light/osramlightify.py
     homeassistant/components/media_player/cast.py
     homeassistant/components/media_player/denon.py
     homeassistant/components/media_player/firetv.py

homeassistant/components/light/osramlightify.py

@@ -0,0 +1,165 @@
+"""
+Support for Osram Lightify.
+
+Uses: https://github.com/aneumeier/python-lightify for the Osram light
+interface.
+
+In order to use the platform just add the following to the configuration.yaml:
+
+light:
+  platform: osramlightify
+  host: <hostname_or_ip>
+
+Todo:
+Add support for Non RGBW lights.
+"""
+
+import logging
+import socket
+from datetime import timedelta
+
+from homeassistant import util
+from homeassistant.const import CONF_HOST
+from homeassistant.components.light import (
+    Light,
+    ATTR_BRIGHTNESS,
+    ATTR_COLOR_TEMP,
+    ATTR_RGB_COLOR,
+    ATTR_TRANSITION
+)
+
+_LOGGER = logging.getLogger(__name__)
+REQUIREMENTS = ['lightify==1.0.3']
+
+TEMP_MIN = 2000               # lightify minimum temperature
+TEMP_MAX = 6500               # lightify maximum temperature
+TEMP_MIN_HASS = 154           # home assistant minimum temperature
+TEMP_MAX_HASS = 500           # home assistant maximum temperature
+MIN_TIME_BETWEEN_SCANS = timedelta(seconds=10)
+MIN_TIME_BETWEEN_FORCED_SCANS = timedelta(milliseconds=100)
+
+
+def setup_platform(hass, config, add_devices_callback, discovery_info=None):
+    """Find and return lights."""
+    import lightify
+    host = config.get(CONF_HOST)
+    if host:
+        try:
+            bridge = lightify.Lightify(host)
+        except socket.error as err:
+            msg = 'Error connecting to bridge: {} due to: {}'.format(host,
+                                                                     str(err))
+            _LOGGER.exception(msg)
+            return False
+        setup_bridge(bridge, add_devices_callback)
+    else:
+        _LOGGER.error('No host found in configuration')
+        return False
+
+
+def setup_bridge(bridge, add_devices_callback):
+    """Setup the Lightify bridge."""
+    lights = {}
+
+    @util.Throttle(MIN_TIME_BETWEEN_SCANS, MIN_TIME_BETWEEN_FORCED_SCANS)
+    def update_lights():
+        """Update the lights objects with latest info from bridge."""
+        bridge.update_all_light_status()
+
+        new_lights = []
+
+        for (light_id, light) in bridge.lights().items():
+            if light_id not in lights:
+                osram_light = OsramLightifyLight(light_id, light,
+                                                 update_lights)
+
+                lights[light_id] = osram_light
+                new_lights.append(osram_light)
+            else:
+                lights[light_id].light = light
+
+        if new_lights:
+            add_devices_callback(new_lights)
+
+    update_lights()
+
+
+class OsramLightifyLight(Light):
+    """Defines an Osram Lightify Light."""
+
+    def __init__(self, light_id, light, update_lights):
+        """Initialize the light."""
+        self._light = light
+        self._light_id = light_id
+        self.update_lights = update_lights
+
+    @property
+    def name(self):
+        """Return the name of the device if any."""
+        return self._light.name()
+
+    @property
+    def rgb_color(self):
+        """Last RGB color value set."""
+        return self._light.rgb()
+
+    @property
+    def color_temp(self):
+        """Return the color temperature."""
+        o_temp = self._light.temp()
+        temperature = int(TEMP_MIN_HASS + (TEMP_MAX_HASS - TEMP_MIN_HASS) *
+                          (o_temp - TEMP_MIN) / (TEMP_MAX - TEMP_MIN))
+        return temperature
+
+    @property
+    def brightness(self):
+        """Brightness of this light between 0..255."""
+        return int(self._light.lum() * 2.55)
+
+    @property
+    def is_on(self):
+        """Update Status to True if device is on."""
+        self.update_lights()
+        _LOGGER.debug("is_on light state for light: %s is: %s",
+                      self._light.name(), self._light.on())
+        return self._light.on()
+
+    def turn_on(self, **kwargs):
+        """Turn the device on."""
+        brightness = 100
+        if self.brightness:
+            brightness = int(self.brightness / 2.55)
+
+        if ATTR_TRANSITION in kwargs:
+            fade = kwargs[ATTR_TRANSITION] * 10
+        else:
+            fade = 0
+
+        if ATTR_RGB_COLOR in kwargs:
+            red, green, blue = kwargs[ATTR_RGB_COLOR]
+            self._light.set_rgb(red, green, blue, fade)
+
+        if ATTR_BRIGHTNESS in kwargs:
+            brightness = int(kwargs[ATTR_BRIGHTNESS] / 2.55)
+
+        if ATTR_COLOR_TEMP in kwargs:
+            color_t = kwargs[ATTR_COLOR_TEMP]
+            kelvin = int(((TEMP_MAX - TEMP_MIN) * (color_t - TEMP_MIN_HASS) /
+                          (TEMP_MAX_HASS - TEMP_MIN_HASS)) + TEMP_MIN)
+            self._light.set_temperature(kelvin, fade)
+
+        self._light.set_luminance(brightness, fade)
+        self.update_ha_state()
+
+    def turn_off(self, **kwargs):
+        """Turn the device off."""
+        if ATTR_TRANSITION in kwargs:
+            fade = kwargs[ATTR_TRANSITION] * 10
+        else:
+            fade = 0
+        self._light.set_luminance(0, fade)
+        self.update_ha_state()
+
+    def update(self):
+        """Synchronize state with bridge."""
+        self.update_lights(no_throttle=True)

requirements_all.txt

@@ -165,6 +165,9 @@ jsonrpc-requests==0.2
 # homeassistant.components.light.lifx
 liffylights==0.9.4
 
+# homeassistant.components.light.osramlightify
+lightify==1.0.3
+
 # homeassistant.components.light.limitlessled
 limitlessled==1.0.0