Add select platform to template integration

homeassistant/components/template/binary_sensor.py

@@ -358,7 +358,7 @@ def __init__(
 
         for key in (CONF_DELAY_ON, CONF_DELAY_OFF, CONF_AUTO_OFF):
             if isinstance(config.get(key), template.Template):
-                self._to_render.append(key)
+                self._to_render_simple.append(key)
                 self._parse_result.add(key)
 
         self._delay_cancel = None

homeassistant/components/template/config.py

@@ -4,13 +4,18 @@
 import voluptuous as vol
 
 from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN
+from homeassistant.components.select import DOMAIN as SELECT_DOMAIN
 from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
 from homeassistant.config import async_log_exception, config_without_domain
 from homeassistant.const import CONF_BINARY_SENSORS, CONF_SENSORS, CONF_UNIQUE_ID
 from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.trigger import async_validate_trigger_config
 
-from . import binary_sensor as binary_sensor_platform, sensor as sensor_platform
+from . import (
+    binary_sensor as binary_sensor_platform,
+    select as select_platform,
+    sensor as sensor_platform,
+)
 from .const import CONF_TRIGGER, DOMAIN
 
 PACKAGE_MERGE_HINT = "list"
@@ -31,6 +36,9 @@
         vol.Optional(CONF_BINARY_SENSORS): cv.schema_with_slug_keys(
             binary_sensor_platform.LEGACY_BINARY_SENSOR_SCHEMA
         ),
+        vol.Optional(SELECT_DOMAIN): vol.All(
+            cv.ensure_list, [select_platform.SELECT_SCHEMA]
+        ),
     }
 )
 

homeassistant/components/template/const.py

@@ -15,6 +15,7 @@
     "fan",
     "light",
     "lock",
+    "select",
     "sensor",
     "switch",
     "vacuum",

homeassistant/components/template/select.py

@@ -0,0 +1,197 @@
+"""Support for selects which integrates with other components."""
+from __future__ import annotations
+
+import contextlib
+import logging
+from typing import Any
+
+import voluptuous as vol
+
+from homeassistant.components.select import SelectEntity
+from homeassistant.components.select.const import (
+    ATTR_OPTION,
+    ATTR_OPTIONS,
+    DOMAIN as SELECT_DOMAIN,
+)
+from homeassistant.components.template.trigger_entity import TriggerEntity
+from homeassistant.const import CONF_NAME, CONF_OPTIMISTIC, CONF_STATE, CONF_UNIQUE_ID
+from homeassistant.core import Config, HomeAssistant
+import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.script import Script
+from homeassistant.helpers.template import Template, TemplateError
+
+from . import TriggerUpdateCoordinator
+from .const import CONF_AVAILABILITY
+from .template_entity import TemplateEntity
+
+CONF_SELECT_OPTION = "select_option"
+
+DEFAULT_NAME = "Template Select"
+DEFAULT_OPTIMISTIC = False
+
+SELECT_SCHEMA = vol.Schema(
+    {
+        vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.template,
+        vol.Required(CONF_STATE): cv.template,
+        vol.Required(CONF_SELECT_OPTION): cv.SCRIPT_SCHEMA,
+        vol.Required(ATTR_OPTIONS): cv.template,
+        vol.Optional(CONF_AVAILABILITY): cv.template,
+        vol.Optional(CONF_OPTIMISTIC, default=DEFAULT_OPTIMISTIC): cv.boolean,
+        vol.Optional(CONF_UNIQUE_ID): cv.string,
+    }
+)
+
+
+async def _async_create_entities(
+    hass: HomeAssistant, entities: list[dict[str, Any]], unique_id_prefix: str | None
+) -> list[TemplateSelect]:
+    """Create the Template select."""
+    for entity in entities:
+        unique_id = entity.get(CONF_UNIQUE_ID)
+
+        if unique_id and unique_id_prefix:
+            unique_id = f"{unique_id_prefix}-{unique_id}"
+
+        return [
+            TemplateSelect(
+                hass,
+                entity.get(CONF_NAME, DEFAULT_NAME),
+                entity[CONF_STATE],
+                entity.get(CONF_AVAILABILITY),
+                entity[CONF_SELECT_OPTION],
+                entity[ATTR_OPTIONS],
+                entity.get(CONF_OPTIMISTIC, DEFAULT_OPTIMISTIC),
+                unique_id,
+            )
+        ]
+
+
+async def async_setup_platform(
+    hass: HomeAssistant,
+    config: Config,
+    async_add_entities: AddEntitiesCallback,
+    discovery_info: dict[str, Any] | None = None,
+) -> None:
+    """Set up the template select."""
+    if "coordinator" in discovery_info:
+        async_add_entities(
+            TriggerSelectEntity(hass, discovery_info["coordinator"], config)
+            for config in discovery_info["entities"]
+        )
+        return
+
+    async_add_entities(
+        await _async_create_entities(
+            hass, discovery_info["entities"], discovery_info["unique_id"]
+        )
+    )
+
+
+class TemplateSelect(TemplateEntity, SelectEntity):
+    """Representation of a template select."""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        name_template: Template | None,
+        value_template: Template,
+        availability_template: Template | None,
+        command_select_option: dict[str, Any],
+        options_template: Template,
+        optimistic: bool,
+        unique_id: str | None,
+    ) -> None:
+        """Initialize the select."""
+        super().__init__(availability_template=availability_template)
+        self._attr_name = DEFAULT_NAME
+        name_template.hass = hass
+        with contextlib.suppress(TemplateError):
+            self._attr_name = name_template.async_render(parse_result=False)
+        self._name_template = name_template
+        self._value_template = value_template
+        domain = __name__.split(".")[-2]
+        self._command_select_option = Script(
+            hass, command_select_option, self._attr_name, domain
+        )
+        self._options_template = options_template
+        self._attr_assumed_state = self._optimistic = optimistic
+        self._attr_unique_id = unique_id
+        self._attr_options = None
+        self._attr_current_option = None
+
+    async def async_added_to_hass(self) -> None:
+        """Register callbacks."""
+        self.add_template_attribute(
+            "_attr_current_option",
+            self._value_template,
+            validator=cv.string,
+            none_on_template_error=True,
+        )
+        self.add_template_attribute(
+            "_attr_options",
+            self._options_template,
+            validator=vol.All(cv.ensure_list, [cv.string]),
+            none_on_template_error=True,
+        )
+        if self._name_template and not self._name_template.is_static:
+            self.add_template_attribute("_attr_name", self._name_template, cv.string)
+        await super().async_added_to_hass()
+
+    async def async_select_option(self, option: str) -> None:
+        """Change the selected option."""
+        if self._optimistic:
+            self._attr_current_option = option
+            self.async_write_ha_state()
+        await self._command_select_option.async_run(
+            {ATTR_OPTION: option}, context=self._context
+        )
+
+
+class TriggerSelectEntity(TriggerEntity, SelectEntity):
+    """Select entity based on trigger data."""
+
+    domain = SELECT_DOMAIN
+    extra_template_keys = (CONF_STATE,)
+    extra_template_keys_complex = (ATTR_OPTIONS,)
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        coordinator: TriggerUpdateCoordinator,
+        config: dict,
+    ) -> None:
+        """Initialize the entity."""
+        super().__init__(hass, coordinator, config)
+        domain = __name__.split(".")[-2]
+        self._command_select_option = Script(
+            hass,
+            config[CONF_SELECT_OPTION],
+            self._rendered.get(CONF_NAME, DEFAULT_NAME),
+            domain,
+        )
+
+    @property
+    def current_option(self) -> str | None:
+        """Return the currently selected option."""
+        return self._rendered.get(CONF_STATE)
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        """Return extra attributes."""
+        return None
+
+    @property
+    def options(self) -> list[str]:
+        """Return the list of available options."""
+        logging.getLogger(__name__).error(self._rendered)
+        return self._rendered.get(ATTR_OPTIONS, [])
+
+    async def async_select_option(self, option: str) -> None:
+        """Change the selected option."""
+        if self._config[CONF_OPTIMISTIC]:
+            self._attr_current_option = option
+            self.async_write_ha_state()
+        await self._command_select_option.async_run(
+            {ATTR_OPTION: option}, context=self._context
+        )

homeassistant/components/template/trigger_entity.py

@@ -23,6 +23,7 @@ class TriggerEntity(update_coordinator.CoordinatorEntity):
 
     domain = ""
     extra_template_keys: tuple | None = None
+    extra_template_keys_complex: tuple | None = None
 
     def __init__(
         self,
@@ -43,7 +44,8 @@ def __init__(
         self._config = config
 
         self._static_rendered = {}
-        self._to_render = []
+        self._to_render_simple = []
+        self._to_render_complex = []
 
         for itm in (
             CONF_NAME,
@@ -57,10 +59,13 @@ def __init__(
             if config[itm].is_static:
                 self._static_rendered[itm] = config[itm].template
             else:
-                self._to_render.append(itm)
+                self._to_render_simple.append(itm)
 
         if self.extra_template_keys is not None:
-            self._to_render.extend(self.extra_template_keys)
+            self._to_render_simple.extend(self.extra_template_keys)
+
+        if self.extra_template_keys_complex is not None:
+            self._to_render_complex.extend(self.extra_template_keys_complex)
 
         # We make a copy so our initial render is 'unknown' and not 'unavailable'
         self._rendered = dict(self._static_rendered)
@@ -124,12 +129,18 @@ def _process_data(self) -> None:
         try:
             rendered = dict(self._static_rendered)
 
-            for key in self._to_render:
+            for key in self._to_render_simple:
                 rendered[key] = self._config[key].async_render(
                     self.coordinator.data["run_variables"],
                     parse_result=key in self._parse_result,
                 )
 
+            for key in self._to_render_complex:
+                rendered[key] = template.render_complex(
+                    self._config[key],
+                    self.coordinator.data["run_variables"],
+                )
+
             if CONF_ATTRIBUTES in self._config:
                 rendered[CONF_ATTRIBUTES] = template.render_complex(
                     self._config[CONF_ATTRIBUTES],