Add HAOS scene preset buttons and smooth tutorial scrolling

Expose scene presets as button entities in the HA integration under a
dedicated "Scenes" device. Each button activates its scene via the API.
The coordinator now fetches scene presets alongside other data, and the
integration reloads when the scene list changes.

Also animate tutorial autoscroll with smooth behavior and wait for
scrollend before positioning the spotlight overlay.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom_components/wled_screen_controller/__init__.py

@@ -28,6 +28,7 @@ from .ws_manager import KeyColorsWebSocketManager
 _LOGGER = logging.getLogger(__name__)
 
 PLATFORMS: list[Platform] = [
+    Platform.BUTTON,
     Platform.SWITCH,
     Platform.SENSOR,
     Platform.NUMBER,
@@ -79,6 +80,20 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
             )
             current_identifiers.add((DOMAIN, target_id))
 
+    # Create a single "Scenes" device for scene preset buttons
+    scenes_identifier = (DOMAIN, f"{entry.entry_id}_scenes")
+    scene_presets = coordinator.data.get("scene_presets", []) if coordinator.data else []
+    if scene_presets:
+        device_registry.async_get_or_create(
+            config_entry_id=entry.entry_id,
+            identifiers={scenes_identifier},
+            name=f"{server_name} Scenes",
+            manufacturer=server_name,
+            model="Scene Presets",
+            configuration_url=server_url,
+        )
+    current_identifiers.add(scenes_identifier)
+
     # Remove devices for targets that no longer exist
     for device_entry in dr.async_entries_for_config_entry(
         device_registry, entry.entry_id
@@ -95,10 +110,13 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         DATA_EVENT_LISTENER: event_listener,
     }
 
-    # Track target IDs to detect changes
+    # Track target and scene IDs to detect changes
     initial_target_ids = set(
         coordinator.data.get("targets", {}).keys() if coordinator.data else []
     )
+    initial_scene_ids = set(
+        p["id"] for p in (coordinator.data.get("scene_presets", []) if coordinator.data else [])
+    )
 
     def _on_coordinator_update() -> None:
         """Manage WS connections and detect target list changes."""
@@ -117,10 +135,13 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
                 else:
                     hass.async_create_task(ws_manager.stop_listening(target_id))
 
-        # Reload if target list changed
+        # Reload if target or scene list changed
         current_ids = set(targets.keys())
-        if current_ids != initial_target_ids:
-            _LOGGER.info("Target list changed, reloading integration")
+        current_scene_ids = set(
+            p["id"] for p in coordinator.data.get("scene_presets", [])
+        )
+        if current_ids != initial_target_ids or current_scene_ids != initial_scene_ids:
+            _LOGGER.info("Target or scene list changed, reloading integration")
             hass.async_create_task(
                 hass.config_entries.async_reload(entry.entry_id)
             )

custom_components/wled_screen_controller/button.py

@@ -0,0 +1,75 @@
+"""Button platform for LED Screen Controller — scene preset activation."""
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from homeassistant.components.button import ButtonEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import DOMAIN, DATA_COORDINATOR
+from .coordinator import WLEDScreenControllerCoordinator
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up scene preset buttons."""
+    data = hass.data[DOMAIN][entry.entry_id]
+    coordinator: WLEDScreenControllerCoordinator = data[DATA_COORDINATOR]
+
+    entities = []
+    if coordinator.data:
+        for preset in coordinator.data.get("scene_presets", []):
+            entities.append(
+                SceneActivateButton(coordinator, preset, entry.entry_id)
+            )
+
+    async_add_entities(entities)
+
+
+class SceneActivateButton(CoordinatorEntity, ButtonEntity):
+    """Button that activates a scene preset."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        coordinator: WLEDScreenControllerCoordinator,
+        preset: dict[str, Any],
+        entry_id: str,
+    ) -> None:
+        """Initialize the button."""
+        super().__init__(coordinator)
+        self._preset_id = preset["id"]
+        self._entry_id = entry_id
+        self._attr_unique_id = f"{entry_id}_scene_{preset['id']}"
+        self._attr_translation_key = "activate_scene"
+        self._attr_translation_placeholders = {"scene_name": preset["name"]}
+        self._attr_icon = "mdi:palette"
+
+    @property
+    def device_info(self) -> dict[str, Any]:
+        """Return device information — all scene buttons belong to the Scenes device."""
+        return {"identifiers": {(DOMAIN, f"{self._entry_id}_scenes")}}
+
+    @property
+    def available(self) -> bool:
+        """Return if entity is available."""
+        if not self.coordinator.data:
+            return False
+        return any(
+            p["id"] == self._preset_id
+            for p in self.coordinator.data.get("scene_presets", [])
+        )
+
+    async def async_press(self) -> None:
+        """Activate the scene preset."""
+        await self.coordinator.activate_scene(self._preset_id)

custom_components/wled_screen_controller/coordinator.py

@@ -107,11 +107,14 @@ class WLEDScreenControllerCoordinator(DataUpdateCoordinator):
                     target_id, data = r
                     targets_data[target_id] = data
 
-                # Fetch devices, CSS sources, and value sources in parallel
-                devices_data, css_sources, value_sources = await asyncio.gather(
-                    self._fetch_devices(),
-                    self._fetch_css_sources(),
-                    self._fetch_value_sources(),
+                # Fetch devices, CSS sources, value sources, and scene presets in parallel
+                devices_data, css_sources, value_sources, scene_presets = (
+                    await asyncio.gather(
+                        self._fetch_devices(),
+                        self._fetch_css_sources(),
+                        self._fetch_value_sources(),
+                        self._fetch_scene_presets(),
+                    )
                 )
 
                 return {
@@ -119,6 +122,7 @@ class WLEDScreenControllerCoordinator(DataUpdateCoordinator):
                     "devices": devices_data,
                     "css_sources": css_sources,
                     "value_sources": value_sources,
+                    "scene_presets": scene_presets,
                     "server_version": self.server_version,
                 }
 
@@ -317,6 +321,37 @@ class WLEDScreenControllerCoordinator(DataUpdateCoordinator):
             _LOGGER.warning("Failed to fetch value sources: %s", err)
             return []
 
+    async def _fetch_scene_presets(self) -> list[dict[str, Any]]:
+        """Fetch all scene presets."""
+        try:
+            async with self.session.get(
+                f"{self.server_url}/api/v1/scene-presets",
+                headers=self._auth_headers,
+                timeout=aiohttp.ClientTimeout(total=DEFAULT_TIMEOUT),
+            ) as resp:
+                resp.raise_for_status()
+                data = await resp.json()
+                return data.get("presets", [])
+        except Exception as err:
+            _LOGGER.warning("Failed to fetch scene presets: %s", err)
+            return []
+
+    async def activate_scene(self, preset_id: str) -> None:
+        """Activate a scene preset."""
+        async with self.session.post(
+            f"{self.server_url}/api/v1/scene-presets/{preset_id}/activate",
+            headers=self._auth_headers,
+            timeout=aiohttp.ClientTimeout(total=DEFAULT_TIMEOUT),
+        ) as resp:
+            if resp.status != 200:
+                body = await resp.text()
+                _LOGGER.error(
+                    "Failed to activate scene %s: %s %s",
+                    preset_id, resp.status, body,
+                )
+                resp.raise_for_status()
+        await self.async_request_refresh()
+
     async def update_target(self, target_id: str, **kwargs: Any) -> None:
         """Update a picture target's fields."""
         async with self.session.put(

custom_components/wled_screen_controller/strings.json

@@ -26,6 +26,11 @@
     }
   },
   "entity": {
+    "button": {
+      "activate_scene": {
+        "name": "{scene_name}"
+      }
+    },
     "switch": {
       "processing": {
         "name": "Processing"

custom_components/wled_screen_controller/translations/en.json

@@ -26,6 +26,11 @@
     }
   },
   "entity": {
+    "button": {
+      "activate_scene": {
+        "name": "{scene_name}"
+      }
+    },
     "switch": {
       "processing": {
         "name": "Processing"

custom_components/wled_screen_controller/translations/ru.json

@@ -26,6 +26,11 @@
     }
   },
   "entity": {
+    "button": {
+      "activate_scene": {
+        "name": "{scene_name}"
+      }
+    },
     "switch": {
       "processing": {
         "name": "Обработка"