356 lines
12 KiB
Python
356 lines
12 KiB
Python
"""Support for Template lights."""
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import logging
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import voluptuous as vol
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from homeassistant.core import callback
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from homeassistant.components.light import (
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ATTR_BRIGHTNESS,
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ENTITY_ID_FORMAT,
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Light,
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SUPPORT_BRIGHTNESS,
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)
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from homeassistant.const import (
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CONF_VALUE_TEMPLATE,
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CONF_ICON_TEMPLATE,
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CONF_ENTITY_PICTURE_TEMPLATE,
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CONF_ENTITY_ID,
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CONF_FRIENDLY_NAME,
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STATE_ON,
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STATE_OFF,
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EVENT_HOMEASSISTANT_START,
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MATCH_ALL,
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CONF_LIGHTS,
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)
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from homeassistant.helpers.config_validation import PLATFORM_SCHEMA
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from homeassistant.exceptions import TemplateError
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import homeassistant.helpers.config_validation as cv
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from homeassistant.helpers.entity import async_generate_entity_id
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from homeassistant.helpers.event import async_track_state_change
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from homeassistant.helpers.script import Script
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from .const import CONF_AVAILABILITY_TEMPLATE
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_LOGGER = logging.getLogger(__name__)
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_VALID_STATES = [STATE_ON, STATE_OFF, "true", "false"]
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CONF_ON_ACTION = "turn_on"
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CONF_OFF_ACTION = "turn_off"
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CONF_LEVEL_ACTION = "set_level"
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CONF_LEVEL_TEMPLATE = "level_template"
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LIGHT_SCHEMA = vol.Schema(
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{
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vol.Required(CONF_ON_ACTION): cv.SCRIPT_SCHEMA,
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vol.Required(CONF_OFF_ACTION): cv.SCRIPT_SCHEMA,
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vol.Optional(CONF_VALUE_TEMPLATE): cv.template,
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vol.Optional(CONF_ICON_TEMPLATE): cv.template,
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vol.Optional(CONF_ENTITY_PICTURE_TEMPLATE): cv.template,
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vol.Optional(CONF_AVAILABILITY_TEMPLATE): cv.template,
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vol.Optional(CONF_LEVEL_ACTION): cv.SCRIPT_SCHEMA,
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vol.Optional(CONF_LEVEL_TEMPLATE): cv.template,
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vol.Optional(CONF_FRIENDLY_NAME): cv.string,
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vol.Optional(CONF_ENTITY_ID): cv.entity_ids,
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}
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)
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
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{vol.Required(CONF_LIGHTS): cv.schema_with_slug_keys(LIGHT_SCHEMA)}
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)
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async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
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"""Set up the Template Lights."""
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lights = []
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for device, device_config in config[CONF_LIGHTS].items():
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friendly_name = device_config.get(CONF_FRIENDLY_NAME, device)
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state_template = device_config.get(CONF_VALUE_TEMPLATE)
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icon_template = device_config.get(CONF_ICON_TEMPLATE)
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entity_picture_template = device_config.get(CONF_ENTITY_PICTURE_TEMPLATE)
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availability_template = device_config.get(CONF_AVAILABILITY_TEMPLATE)
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on_action = device_config[CONF_ON_ACTION]
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off_action = device_config[CONF_OFF_ACTION]
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level_action = device_config.get(CONF_LEVEL_ACTION)
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level_template = device_config.get(CONF_LEVEL_TEMPLATE)
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template_entity_ids = set()
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if state_template is not None:
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temp_ids = state_template.extract_entities()
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if str(temp_ids) != MATCH_ALL:
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template_entity_ids |= set(temp_ids)
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if level_template is not None:
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temp_ids = level_template.extract_entities()
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if str(temp_ids) != MATCH_ALL:
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template_entity_ids |= set(temp_ids)
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if icon_template is not None:
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temp_ids = icon_template.extract_entities()
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if str(temp_ids) != MATCH_ALL:
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template_entity_ids |= set(temp_ids)
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if entity_picture_template is not None:
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temp_ids = entity_picture_template.extract_entities()
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if str(temp_ids) != MATCH_ALL:
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template_entity_ids |= set(temp_ids)
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if availability_template is not None:
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temp_ids = availability_template.extract_entities()
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if str(temp_ids) != MATCH_ALL:
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template_entity_ids |= set(temp_ids)
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if not template_entity_ids:
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template_entity_ids = MATCH_ALL
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entity_ids = device_config.get(CONF_ENTITY_ID, template_entity_ids)
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lights.append(
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LightTemplate(
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hass,
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device,
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friendly_name,
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state_template,
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icon_template,
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entity_picture_template,
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availability_template,
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on_action,
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off_action,
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level_action,
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level_template,
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entity_ids,
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)
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)
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if not lights:
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_LOGGER.error("No lights added")
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return False
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async_add_entities(lights)
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return True
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class LightTemplate(Light):
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"""Representation of a templated Light, including dimmable."""
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def __init__(
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self,
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hass,
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device_id,
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friendly_name,
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state_template,
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icon_template,
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entity_picture_template,
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availability_template,
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on_action,
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off_action,
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level_action,
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level_template,
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entity_ids,
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):
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"""Initialize the light."""
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self.hass = hass
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self.entity_id = async_generate_entity_id(
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ENTITY_ID_FORMAT, device_id, hass=hass
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)
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self._name = friendly_name
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self._template = state_template
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self._icon_template = icon_template
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self._entity_picture_template = entity_picture_template
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self._availability_template = availability_template
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self._on_script = Script(hass, on_action)
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self._off_script = Script(hass, off_action)
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self._level_script = None
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if level_action is not None:
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self._level_script = Script(hass, level_action)
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self._level_template = level_template
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self._state = False
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self._icon = None
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self._entity_picture = None
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self._brightness = None
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self._entities = entity_ids
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self._available = True
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if self._template is not None:
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self._template.hass = self.hass
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if self._level_template is not None:
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self._level_template.hass = self.hass
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if self._icon_template is not None:
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self._icon_template.hass = self.hass
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if self._entity_picture_template is not None:
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self._entity_picture_template.hass = self.hass
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if self._availability_template is not None:
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self._availability_template.hass = self.hass
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@property
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def brightness(self):
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"""Return the brightness of the light."""
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return self._brightness
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@property
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def name(self):
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"""Return the display name of this light."""
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return self._name
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@property
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def supported_features(self):
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"""Flag supported features."""
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if self._level_script is not None:
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return SUPPORT_BRIGHTNESS
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return 0
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@property
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def is_on(self):
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"""Return true if device is on."""
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return self._state
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@property
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def should_poll(self):
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"""Return the polling state."""
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return False
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@property
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def icon(self):
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"""Return the icon to use in the frontend, if any."""
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return self._icon
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@property
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def entity_picture(self):
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"""Return the entity picture to use in the frontend, if any."""
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return self._entity_picture
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@property
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def available(self) -> bool:
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"""Return if the device is available."""
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return self._available
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async def async_added_to_hass(self):
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"""Register callbacks."""
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@callback
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def template_light_state_listener(entity, old_state, new_state):
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"""Handle target device state changes."""
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self.async_schedule_update_ha_state(True)
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@callback
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def template_light_startup(event):
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"""Update template on startup."""
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if (
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self._template is not None
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or self._level_template is not None
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or self._availability_template is not None
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):
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async_track_state_change(
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self.hass, self._entities, template_light_state_listener
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)
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self.async_schedule_update_ha_state(True)
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self.hass.bus.async_listen_once(
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EVENT_HOMEASSISTANT_START, template_light_startup
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)
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async def async_turn_on(self, **kwargs):
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"""Turn the light on."""
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optimistic_set = False
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# set optimistic states
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if self._template is None:
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self._state = True
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optimistic_set = True
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if self._level_template is None and ATTR_BRIGHTNESS in kwargs:
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_LOGGER.info(
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"Optimistically setting brightness to %s", kwargs[ATTR_BRIGHTNESS]
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)
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self._brightness = kwargs[ATTR_BRIGHTNESS]
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optimistic_set = True
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if ATTR_BRIGHTNESS in kwargs and self._level_script:
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await self._level_script.async_run(
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{"brightness": kwargs[ATTR_BRIGHTNESS]}, context=self._context
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)
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else:
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await self._on_script.async_run()
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if optimistic_set:
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self.async_schedule_update_ha_state()
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async def async_turn_off(self, **kwargs):
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"""Turn the light off."""
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await self._off_script.async_run(context=self._context)
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if self._template is None:
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self._state = False
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self.async_schedule_update_ha_state()
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async def async_update(self):
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"""Update the state from the template."""
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if self._template is not None:
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try:
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state = self._template.async_render().lower()
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except TemplateError as ex:
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_LOGGER.error(ex)
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self._state = None
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if state in _VALID_STATES:
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self._state = state in ("true", STATE_ON)
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else:
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_LOGGER.error(
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"Received invalid light is_on state: %s. Expected: %s",
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state,
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", ".join(_VALID_STATES),
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)
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self._state = None
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if self._level_template is not None:
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try:
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brightness = self._level_template.async_render()
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except TemplateError as ex:
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_LOGGER.error(ex)
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self._state = None
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if 0 <= int(brightness) <= 255:
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self._brightness = int(brightness)
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else:
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_LOGGER.error(
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"Received invalid brightness : %s. Expected: 0-255", brightness
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)
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self._brightness = None
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for property_name, template in (
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("_icon", self._icon_template),
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("_entity_picture", self._entity_picture_template),
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("_available", self._availability_template),
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):
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if template is None:
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continue
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try:
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value = template.async_render()
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if property_name == "_available":
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value = value.lower() == "true"
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setattr(self, property_name, value)
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except TemplateError as ex:
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friendly_property_name = property_name[1:].replace("_", " ")
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if ex.args and ex.args[0].startswith(
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"UndefinedError: 'None' has no attribute"
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):
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# Common during HA startup - so just a warning
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_LOGGER.warning(
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"Could not render %s template %s," " the state is unknown.",
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friendly_property_name,
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self._name,
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)
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return
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try:
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setattr(self, property_name, getattr(super(), property_name))
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except AttributeError:
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_LOGGER.error(
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"Could not render %s template %s: %s",
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friendly_property_name,
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self._name,
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ex,
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)
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