111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
"""Offer template automation rules."""
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import logging
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import voluptuous as vol
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from homeassistant import exceptions
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from homeassistant.const import CONF_FOR, CONF_PLATFORM, CONF_VALUE_TEMPLATE
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from homeassistant.core import callback
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from homeassistant.helpers import condition, config_validation as cv, template
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from homeassistant.helpers.event import async_track_same_state, async_track_template
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# mypy: allow-untyped-defs, no-check-untyped-defs
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_LOGGER = logging.getLogger(__name__)
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TRIGGER_SCHEMA = IF_ACTION_SCHEMA = vol.Schema(
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{
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vol.Required(CONF_PLATFORM): "template",
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vol.Required(CONF_VALUE_TEMPLATE): cv.template,
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vol.Optional(CONF_FOR): vol.Any(
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vol.All(cv.time_period, cv.positive_timedelta),
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cv.template,
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cv.template_complex,
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),
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}
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)
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async def async_attach_trigger(
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hass, config, action, automation_info, *, platform_type="numeric_state"
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):
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"""Listen for state changes based on configuration."""
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value_template = config.get(CONF_VALUE_TEMPLATE)
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value_template.hass = hass
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time_delta = config.get(CONF_FOR)
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template.attach(hass, time_delta)
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unsub_track_same = None
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@callback
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def template_listener(entity_id, from_s, to_s):
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"""Listen for state changes and calls action."""
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nonlocal unsub_track_same
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@callback
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def call_action():
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"""Call action with right context."""
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hass.async_run_job(
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action(
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{
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"trigger": {
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"platform": "template",
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"entity_id": entity_id,
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"from_state": from_s,
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"to_state": to_s,
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"for": time_delta if not time_delta else period,
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}
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},
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context=(to_s.context if to_s else None),
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)
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)
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if not time_delta:
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call_action()
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return
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variables = {
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"trigger": {
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"platform": platform_type,
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"entity_id": entity_id,
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"from_state": from_s,
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"to_state": to_s,
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}
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}
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try:
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if isinstance(time_delta, template.Template):
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period = vol.All(cv.time_period, cv.positive_timedelta)(
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time_delta.async_render(variables)
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)
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elif isinstance(time_delta, dict):
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time_delta_data = {}
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time_delta_data.update(template.render_complex(time_delta, variables))
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period = vol.All(cv.time_period, cv.positive_timedelta)(time_delta_data)
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else:
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period = time_delta
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except (exceptions.TemplateError, vol.Invalid) as ex:
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_LOGGER.error(
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"Error rendering '%s' for template: %s", automation_info["name"], ex
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)
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return
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unsub_track_same = async_track_same_state(
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hass,
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period,
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call_action,
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lambda _, _2, _3: condition.async_template(hass, value_template),
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value_template.extract_entities(),
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)
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unsub = async_track_template(hass, value_template, template_listener)
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@callback
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def async_remove():
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"""Remove state listeners async."""
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unsub()
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if unsub_track_same:
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# pylint: disable=not-callable
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unsub_track_same()
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return async_remove
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