transforming to integration

custom_components/boiler_aux_heater/switch.py

@@ -0,0 +1,80 @@
+"""Switch entities for Boiler Auxiliary Heater Control."""
+
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.components.switch import SwitchEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import EntityCategory
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.restore_state import RestoreEntity
+
+from .const import DOMAIN, SWITCH_DEFINITIONS
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up switch entities."""
+    coordinator = hass.data[DOMAIN][entry.entry_id]
+
+    entities = []
+    for key, defn in SWITCH_DEFINITIONS.items():
+        entity = BoilerAuxHeaterSwitch(coordinator, entry, key, defn)
+        entities.append(entity)
+
+    async_add_entities(entities)
+
+
+class BoilerAuxHeaterSwitch(RestoreEntity, SwitchEntity):
+    """A mode toggle switch for the boiler aux heater."""
+
+    _attr_has_entity_name = True
+    _attr_entity_category = EntityCategory.CONFIG
+
+    def __init__(
+        self,
+        coordinator,
+        entry: ConfigEntry,
+        key: str,
+        defn: dict,
+    ) -> None:
+        """Initialize the switch entity."""
+        self.coordinator = coordinator
+        self._key = key
+        self._defn = defn
+        self._attr_unique_id = f"{entry.entry_id}_{key}"
+        self._attr_translation_key = key
+        self._attr_icon = defn["icon"]
+        self._attr_is_on = defn["default"]
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, entry.entry_id)},
+            name="Boiler Auxiliary Heater",
+            manufacturer="Custom",
+        )
+
+    async def async_added_to_hass(self) -> None:
+        """Restore state on startup."""
+        await super().async_added_to_hass()
+        last_state = await self.async_get_last_state()
+        if last_state and last_state.state not in ("unknown", "unavailable"):
+            self._attr_is_on = last_state.state == "on"
+        # Register with coordinator
+        self.coordinator.register_switch(self._key, self)
+
+    async def async_turn_on(self, **kwargs: Any) -> None:
+        """Turn on the switch."""
+        self._attr_is_on = True
+        self.async_write_ha_state()
+        self.coordinator.async_request_refresh()
+
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Turn off the switch."""
+        self._attr_is_on = False
+        self.async_write_ha_state()
+        self.coordinator.async_request_refresh()