95 lines
3.3 KiB
Python
95 lines
3.3 KiB
Python
"""Data update coordinator for trigger based template entities."""
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from collections.abc import Callable
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import logging
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from homeassistant.const import EVENT_HOMEASSISTANT_START
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from homeassistant.core import CoreState, callback
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from homeassistant.helpers import discovery, trigger as trigger_helper
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from homeassistant.helpers.script import Script
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from homeassistant.helpers.typing import ConfigType
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from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
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from .const import CONF_ACTION, CONF_TRIGGER, DOMAIN, PLATFORMS
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_LOGGER = logging.getLogger(__name__)
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class TriggerUpdateCoordinator(DataUpdateCoordinator):
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"""Data update coordinator for trigger based template entities."""
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REMOVE_TRIGGER = object()
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def __init__(self, hass, config):
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"""Instantiate trigger data."""
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super().__init__(hass, _LOGGER, name="Trigger Update Coordinator")
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self.config = config
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self._unsub_start: Callable[[], None] | None = None
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self._unsub_trigger: Callable[[], None] | None = None
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self._script: Script | None = None
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@property
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def unique_id(self) -> str | None:
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"""Return unique ID for the entity."""
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return self.config.get("unique_id")
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@callback
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def async_remove(self):
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"""Signal that the entities need to remove themselves."""
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if self._unsub_start:
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self._unsub_start()
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if self._unsub_trigger:
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self._unsub_trigger()
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async def async_setup(self, hass_config: ConfigType) -> None:
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"""Set up the trigger and create entities."""
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if self.hass.state == CoreState.running:
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await self._attach_triggers()
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else:
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self._unsub_start = self.hass.bus.async_listen_once(
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EVENT_HOMEASSISTANT_START, self._attach_triggers
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)
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for platform_domain in PLATFORMS:
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if platform_domain in self.config:
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self.hass.async_create_task(
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discovery.async_load_platform(
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self.hass,
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platform_domain,
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DOMAIN,
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{"coordinator": self, "entities": self.config[platform_domain]},
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hass_config,
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)
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)
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async def _attach_triggers(self, start_event=None) -> None:
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"""Attach the triggers."""
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if CONF_ACTION in self.config:
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self._script = Script(
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self.hass,
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self.config[CONF_ACTION],
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self.name,
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DOMAIN,
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)
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if start_event is not None:
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self._unsub_start = None
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self._unsub_trigger = await trigger_helper.async_initialize_triggers(
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self.hass,
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self.config[CONF_TRIGGER],
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self._handle_triggered,
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DOMAIN,
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self.name,
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self.logger.log,
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start_event is not None,
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)
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async def _handle_triggered(self, run_variables, context=None):
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if self._script:
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script_result = await self._script.async_run(run_variables, context)
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if script_result:
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run_variables = script_result.variables
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self.async_set_updated_data(
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{"run_variables": run_variables, "context": context}
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)
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