Intent: Set light color

homeassistant/components/light/__init__.py

@@ -21,6 +21,7 @@
 from homeassistant.helpers.config_validation import PLATFORM_SCHEMA  # noqa
 from homeassistant.helpers.entity import ToggleEntity
 from homeassistant.helpers.entity_component import EntityComponent
+from homeassistant.helpers import intent
 from homeassistant.loader import bind_hass
 import homeassistant.util.color as color_util
 
@@ -135,6 +136,8 @@
     vol.ExactSequence((str, cv.small_float, cv.small_float, cv.byte))
 )
 
+INTENT_SET = 'HassLightSet'
+
 _LOGGER = logging.getLogger(__name__)
 
 
@@ -228,7 +231,12 @@ def preprocess_turn_on_alternatives(params):
 
     color_name = params.pop(ATTR_COLOR_NAME, None)
     if color_name is not None:
-        params[ATTR_RGB_COLOR] = color_util.color_name_to_rgb(color_name)
+        try:
+            params[ATTR_RGB_COLOR] = color_util.color_name_to_rgb(color_name)
+        except ValueError:
+            _LOGGER.warning('Got unknown color %s, falling back to white',
+                            color_name)
+            params[ATTR_RGB_COLOR] = (255, 255, 255)
 
     kelvin = params.pop(ATTR_KELVIN, None)
     if kelvin is not None:
@@ -240,6 +248,67 @@ def preprocess_turn_on_alternatives(params):
         params[ATTR_BRIGHTNESS] = int(255 * brightness_pct/100)
 
 
+class SetIntentHandler(intent.IntentHandler):
+    """Handle set color intents."""
+
+    intent_type = INTENT_SET
+    slot_schema = {
+        vol.Required('name'): cv.string,
+        vol.Optional('color'): color_util.color_name_to_rgb,
+        vol.Optional('brightness'): vol.All(vol.Coerce(int), vol.Range(0, 100))
+    }
+
+    async def async_handle(self, intent_obj):
+        """Handle the hass intent."""
+        hass = intent_obj.hass
+        slots = self.async_validate_slots(intent_obj.slots)
+        state = hass.helpers.intent.async_match_state(
+            slots['name']['value'],
+            [state for state in hass.states.async_all()
+             if state.domain == DOMAIN])
+
+        service_data = {
+            ATTR_ENTITY_ID: state.entity_id,
+        }
+        speech_parts = []
+
+        if 'color' in slots:
+            intent.async_test_feature(
+                state, SUPPORT_RGB_COLOR, 'changing colors')
+            service_data[ATTR_RGB_COLOR] = slots['color']['value']
+            # Use original passed in value of the color because we don't have
+            # human readable names for that internally.
+            speech_parts.append('the color {}'.format(
+                intent_obj.slots['color']['value']))
+
+        if 'brightness' in slots:
+            intent.async_test_feature(
+                state, SUPPORT_BRIGHTNESS, 'changing brightness')
+            service_data[ATTR_BRIGHTNESS_PCT] = slots['brightness']['value']
+            speech_parts.append('{}% brightness'.format(
+                slots['brightness']['value']))
+
+        await hass.services.async_call(DOMAIN, SERVICE_TURN_ON, service_data)
+
+        response = intent_obj.create_response()
+
+        if not speech_parts:  # No attributes changed
+            speech = 'Turned on {}'.format(state.name)
+        else:
+            parts = ['Changed {} to'.format(state.name)]
+            for index, part in enumerate(speech_parts):
+                if index == 0:
+                    parts.append(' {}'.format(part))
+                elif index != len(speech_parts) - 1:
+                    parts.append(', {}'.format(part))
+                else:
+                    parts.append(' and {}'.format(part))
+            speech = ''.join(parts)
+
+        response.async_set_speech(speech)
+        return response
+
+
 async def async_setup(hass, config):
     """Expose light control via state machine and services."""
     component = EntityComponent(
@@ -291,6 +360,8 @@ async def async_handle_light_service(service):
         DOMAIN, SERVICE_TOGGLE, async_handle_light_service,
         schema=LIGHT_TOGGLE_SCHEMA)
 
+    hass.helpers.intent.async_register(SetIntentHandler())
+
     return True
 
 

homeassistant/helpers/intent.py

@@ -4,6 +4,7 @@
 
 import voluptuous as vol
 
+from homeassistant.const import ATTR_SUPPORTED_FEATURES
 from homeassistant.core import callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_validation as cv
@@ -33,6 +34,8 @@ def async_register(hass, handler):
     if intents is None:
         intents = hass.data[DATA_KEY] = {}
 
+    assert handler.intent_type is not None, 'intent_type cannot be None'
+
     if handler.intent_type in intents:
         _LOGGER.warning('Intent %s is being overwritten by %s.',
                         handler.intent_type, handler)
@@ -56,35 +59,59 @@ async def async_handle(hass, platform, intent_type, slots=None,
         result = await handler.async_handle(intent)
         return result
     except vol.Invalid as err:
+        _LOGGER.warning('Received invalid slot info for %s: %s',
+                        intent_type, err)
         raise InvalidSlotInfo(
             'Received invalid slot info for {}'.format(intent_type)) from err
+    except IntentHandleError:
+        raise
     except Exception as err:
-        raise IntentHandleError(
+        raise IntentUnexpectedError(
             'Error handling {}'.format(intent_type)) from err
 
 
 class IntentError(HomeAssistantError):
     """Base class for intent related errors."""
 
-    pass
-
 
 class UnknownIntent(IntentError):
     """When the intent is not registered."""
 
-    pass
-
 
 class InvalidSlotInfo(IntentError):
     """When the slot data is invalid."""
 
-    pass
-
 
 class IntentHandleError(IntentError):
     """Error while handling intent."""
 
-    pass
+
+class IntentUnexpectedError(IntentError):
+    """Unexpected error while handling intent."""
+
+
+@callback
+@bind_hass
+def async_match_state(hass, name, states=None):
+    """Find a state that matches the name."""
+    if states is None:
+        states = hass.states.async_all()
+
+    entity = _fuzzymatch(name, states, lambda state: state.name)
+
+    if entity is None:
+        raise IntentHandleError('Unable to find entity {}'.format(name))
+
+    return entity
+
+
+@callback
+def async_test_feature(state, feature, feature_name):
+    """Test is state supports a feature."""
+    if state.attributes.get(ATTR_SUPPORTED_FEATURES, 0) & feature == 0:
+        raise IntentHandleError(
+            'Entity {} does not support {}'.format(
+                state.name, feature_name))
 
 
 class IntentHandler:
@@ -122,16 +149,17 @@ def __repr__(self):
         return '<{} - {}>'.format(self.__class__.__name__, self.intent_type)
 
 
-def fuzzymatch(name, entities):
+def _fuzzymatch(name, items, key):
     """Fuzzy matching function."""
     matches = []
     pattern = '.*?'.join(name)
     regex = re.compile(pattern, re.IGNORECASE)
-    for entity_id, entity_name in entities.items():
-        match = regex.search(entity_name)
+    for item in items:
+        match = regex.search(key(item))
         if match:
-            matches.append((len(match.group()), match.start(), entity_id))
-    return [x for _, _, x in sorted(matches)]
+            matches.append((len(match.group()), match.start(), item))
+
+    return sorted(matches)[0][2] if matches else None
 
 
 class ServiceIntentHandler(IntentHandler):
@@ -141,7 +169,7 @@ class ServiceIntentHandler(IntentHandler):
     """
 
     slot_schema = {
-        'name': cv.string,
+        vol.Required('name'): cv.string,
     }
 
     def __init__(self, intent_type, domain, service, speech):
@@ -155,30 +183,14 @@ async def async_handle(self, intent_obj):
         """Handle the hass intent."""
         hass = intent_obj.hass
         slots = self.async_validate_slots(intent_obj.slots)
-        response = intent_obj.create_response()
-
-        name = slots['name']['value']
-        entities = {state.entity_id: state.name for state
-                    in hass.states.async_all()}
+        state = async_match_state(hass, slots['name']['value'])
 
-        matches = fuzzymatch(name, entities)
-        entity_id = matches[0] if matches else None
-        _LOGGER.debug("%s matched entity: %s", name, entity_id)
+        await hass.services.async_call(self.domain, self.service, {
+            ATTR_ENTITY_ID: state.entity_id
+        })
 
         response = intent_obj.create_response()
-        if not entity_id:
-            response.async_set_speech(
-                "Could not find entity id matching {}.".format(name))
-            _LOGGER.error("Could not find entity id matching %s", name)
-            return response
-
-        await hass.services.async_call(
-            self.domain, self.service, {
-                ATTR_ENTITY_ID: entity_id
-            })
-
-        response.async_set_speech(
-            self.speech.format(name))
+        response.async_set_speech(self.speech.format(state.name))
         return response
 
 

homeassistant/util/color.py

@@ -1,12 +1,9 @@
 """Color util methods."""
-import logging
 import math
 import colorsys
 
 from typing import Tuple
 
-_LOGGER = logging.getLogger(__name__)
-
 # Official CSS3 colors from w3.org:
 # https://www.w3.org/TR/2010/PR-css3-color-20101028/#html4
 # names do not have spaces in them so that we can compare against
@@ -171,8 +168,7 @@ def color_name_to_rgb(color_name):
     # spaces in it as well for matching purposes
     hex_value = COLORS.get(color_name.replace(' ', '').lower())
     if not hex_value:
-        _LOGGER.error('unknown color supplied %s default to white', color_name)
-        hex_value = COLORS['white']
+        raise ValueError('Unknown color')
 
     return hex_value
 

tests/components/light/test_init.py

@@ -7,10 +7,12 @@
 import homeassistant.loader as loader
 from homeassistant.const import (
     ATTR_ENTITY_ID, STATE_ON, STATE_OFF, CONF_PLATFORM,
-    SERVICE_TURN_ON, SERVICE_TURN_OFF, SERVICE_TOGGLE)
+    SERVICE_TURN_ON, SERVICE_TURN_OFF, SERVICE_TOGGLE, ATTR_SUPPORTED_FEATURES)
 import homeassistant.components.light as light
+from homeassistant.helpers.intent import IntentHandleError
 
-from tests.common import mock_service, get_test_home_assistant
+from tests.common import (
+    async_mock_service, mock_service, get_test_home_assistant)
 
 
 class TestLight(unittest.TestCase):
@@ -302,3 +304,93 @@ def test_light_profiles(self):
         self.assertEqual(
             {light.ATTR_XY_COLOR: (.4, .6), light.ATTR_BRIGHTNESS: 100},
             data)
+
+
+async def test_intent_set_color(hass):
+    """Test the set color intent."""
+    hass.states.async_set('light.hello_2', 'off', {
+        ATTR_SUPPORTED_FEATURES: light.SUPPORT_RGB_COLOR
+    })
+    hass.states.async_set('switch.hello', 'off')
+    calls = async_mock_service(hass, light.DOMAIN, light.SERVICE_TURN_ON)
+    hass.helpers.intent.async_register(light.SetIntentHandler())
+
+    result = await hass.helpers.intent.async_handle(
+        'test', light.INTENT_SET, {
+            'name': {
+                'value': 'Hello',
+            },
+            'color': {
+                'value': 'blue'
+            }
+        })
+    await hass.async_block_till_done()
+
+    assert result.speech['plain']['speech'] == \
+        'Changed hello 2 to the color blue'
+
+    assert len(calls) == 1
+    call = calls[0]
+    assert call.domain == light.DOMAIN
+    assert call.service == SERVICE_TURN_ON
+    assert call.data.get(ATTR_ENTITY_ID) == 'light.hello_2'
+    assert call.data.get(light.ATTR_RGB_COLOR) == (0, 0, 255)
+
+
+async def test_intent_set_color_tests_feature(hass):
+    """Test the set color intent."""
+    hass.states.async_set('light.hello', 'off')
+    calls = async_mock_service(hass, light.DOMAIN, light.SERVICE_TURN_ON)
+    hass.helpers.intent.async_register(light.SetIntentHandler())
+
+    try:
+        await hass.helpers.intent.async_handle(
+            'test', light.INTENT_SET, {
+                'name': {
+                    'value': 'Hello',
+                },
+                'color': {
+                    'value': 'blue'
+                }
+            })
+        assert False, 'handling intent should have raised'
+    except IntentHandleError as err:
+        assert str(err) == 'Entity hello does not support changing colors'
+
+    assert len(calls) == 0
+
+
+async def test_intent_set_color_and_brightness(hass):
+    """Test the set color intent."""
+    hass.states.async_set('light.hello_2', 'off', {
+        ATTR_SUPPORTED_FEATURES: (
+            light.SUPPORT_RGB_COLOR | light.SUPPORT_BRIGHTNESS)
+    })
+    hass.states.async_set('switch.hello', 'off')
+    calls = async_mock_service(hass, light.DOMAIN, light.SERVICE_TURN_ON)
+    hass.helpers.intent.async_register(light.SetIntentHandler())
+
+    result = await hass.helpers.intent.async_handle(
+        'test', light.INTENT_SET, {
+            'name': {
+                'value': 'Hello',
+            },
+            'color': {
+                'value': 'blue'
+            },
+            'brightness': {
+                'value': '20'
+            }
+        })
+    await hass.async_block_till_done()
+
+    assert result.speech['plain']['speech'] == \
+        'Changed hello 2 to the color blue and 20% brightness'
+
+    assert len(calls) == 1
+    call = calls[0]
+    assert call.domain == light.DOMAIN
+    assert call.service == SERVICE_TURN_ON
+    assert call.data.get(ATTR_ENTITY_ID) == 'light.hello_2'
+    assert call.data.get(light.ATTR_RGB_COLOR) == (0, 0, 255)
+    assert call.data.get(light.ATTR_BRIGHTNESS_PCT) == 20