chore: release v0.3.1

Adds Home Assistant entities for the foreground-process feature shipped
in the media server, plus migrates existing display entities to use HA
translation keys (strings.json / translations/*) so per-language UI text
flows through the standard locale mechanism.

Foreground entities (all share one HA "Foreground" device linked to the
hub via via_device):
- sensor.foreground_process — process name as state + full payload
  (pid, exec path, window title, fullscreen flag, monitor, geometry,
  is_browser, browser_page_title, browser_url, error) as attributes
- sensor.window_title, sensor.pid, sensor.foreground_monitor,
  sensor.process_started (TIMESTAMP device class)
- binary_sensor.fullscreen, binary_sensor.minimized

Data flow:
- ForegroundCoordinator polls GET /api/foreground every 5s (HTTP fallback)
- media_player's WebSocket receiver forwards `foreground` /
  `foreground_update` push frames into the coordinator via
  apply_websocket_snapshot, so sensors update in near-real-time when WS
  is connected and fall back to polling otherwise

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

RELEASE_NOTES.md

@@ -1,22 +1,19 @@
-## v0.3.0 (2026-05-15)
-
-### Migration / Behavior Changes
-- Each physical monitor is now its own Home Assistant device, linked to the media-server hub via `via_device`. Existing brightness and power entities migrate to per-display devices automatically on first reload — `unique_id`s are preserved, but entities will move under new devices in the UI and can be placed in their own area/room ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
-- The hub keeps the `media_player` and script buttons; per-display devices hold the power switch, brightness slider, and the new DDC/CI capability entities ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+## v0.3.1 (2026-05-18)
 
 ### Features
-- **New diagnostic sensors**: `DisplayResolutionSensor` exposes the active resolution parsed from EDID ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
-- **New diagnostic binary sensors**: `DisplayPrimaryBinarySensor` and `DisplayPowerControlBinarySensor` make it visible why a power switch is or isn't created for a given display ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
-- **New select entities**:
-  - `DisplayInputSourceSelect` — switch active input (HDMI1, DP1, etc.) via DDC/CI
-  - `DisplayColorPresetSelect` — color temperature presets
-  - `DisplayPictureModeSelect` — VCP 0xDC scene modes ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
-- **New number entity**: `DisplayContrastNumber` exposed alongside the existing brightness slider ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
-- Per-display devices now show real manufacturer/model pulled from EDID; device names no longer prepend the hub title (the hierarchy is already shown via `via_device`) ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
-- Select and number entities verify the server's `success` flag and re-sync from the actual monitor state when a write is silently rejected — some monitors honor DDC/CI reads but ignore writes for certain codes ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- **Foreground process sensors** — new "Foreground" device (linked to the hub via `via_device`) exposing what's currently in focus on the remote PC:
+  - `sensor.foreground_process` — process name as state, with full payload (PID, exec path, window title, fullscreen flag, monitor, geometry, browser detection, browser page title/URL, error) as attributes
+  - `sensor.window_title`, `sensor.pid`, `sensor.foreground_monitor`, `sensor.process_started` (TIMESTAMP device class)
+  - `binary_sensor.fullscreen`, `binary_sensor.minimized`
+  - Fed by a new `ForegroundCoordinator` polling `GET /api/foreground` every 5s, with near-real-time updates via the existing WebSocket (`foreground` / `foreground_update` push frames flow into the coordinator) ([9d27727](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/9d27727))
+- **Optional API token** — `CONF_TOKEN` is now optional. When the media server runs without `api_tokens` configured (auth disabled), the integration omits the `Authorization` header and `?token=` query from REST, WebSocket, and album-art URLs. Server-side auth rejections still surface as `invalid_auth` in the UI ([ab05852](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/ab05852))
 
 ### Performance
-- `api_client` no longer forces `?refresh=true` on every poll, letting the integration ride the media server's TTL cache instead of triggering a full DDC/CI probe per entity update ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- **Shared `DisplayCoordinator`** — a single `/api/display/monitors` poll per cycle is now fanned out to all per-display entities (binary sensors, numbers, selects, sensors, switches) via `CoordinatorEntity`. Removes ~9x redundant requests per polling cycle that previously came from each entity calling `get_display_monitors()` in its own `async_update` ([ab05852](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/ab05852))
+- **Optimistic write-through** — `coordinator.apply_optimistic(...)` keeps sibling entities in sync after slider/select writes without an extra network round-trip ([ab05852](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/ab05852))
+
+### UI / Localization
+- Display entities migrated to Home Assistant **translation keys** (`strings.json` / `translations/*`), so per-language UI text flows through the standard locale mechanism instead of hardcoded English strings ([9d27727](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/9d27727))
 
 ---
 
@@ -25,6 +22,7 @@
 
 | Hash | Message | Author |
 |------|---------|--------|
-| [4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded) | feat(displays): per-display devices + DDC/CI capability entities | alexei.dolgolyov |
+| [9d27727](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/9d27727) | feat(foreground): foreground process sensors + translation key migration | alexei.dolgolyov |
+| [ab05852](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/ab05852) | feat: shared DisplayCoordinator + optional API token | alexei.dolgolyov |
 
 </details>

custom_components/remote_media_player/__init__.py

@@ -24,6 +24,8 @@ from .const import (
     SERVICE_EXECUTE_SCRIPT,
     SERVICE_PLAY_MEDIA_FILE,
 )
+from .display_coordinator import DisplayCoordinator
+from .foreground_coordinator import ForegroundCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -78,10 +80,29 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         await client.close()
         return False
 
+    # Create the shared display coordinator BEFORE platform setup so each
+    # display platform's async_setup_entry can register against the same
+    # data source instead of polling /api/display/monitors on its own.
+    display_coordinator = DisplayCoordinator(hass, client)
+    try:
+        await display_coordinator.async_config_entry_first_refresh()
+    except Exception as err:  # noqa: BLE001 - first refresh wraps its own errors
+        _LOGGER.warning("Initial display monitor fetch failed, will retry: %s", err)
+
+    # Foreground coordinator — shared by sensor + binary_sensor platforms and
+    # nudged by the media-player WebSocket receiver when it gets a push.
+    foreground_coordinator = ForegroundCoordinator(hass, client)
+    try:
+        await foreground_coordinator.async_config_entry_first_refresh()
+    except Exception as err:  # noqa: BLE001
+        _LOGGER.warning("Initial foreground fetch failed, will retry: %s", err)
+
     # Store client in hass.data
     hass.data.setdefault(DOMAIN, {})
     hass.data[DOMAIN][entry.entry_id] = {
         "client": client,
+        "display_coordinator": display_coordinator,
+        "foreground_coordinator": foreground_coordinator,
     }
 
     # Register services if not already registered

custom_components/remote_media_player/api_client.py

@@ -31,6 +31,7 @@ from .const import (
     API_BROWSER_BROWSE,
     API_BROWSER_PLAY,
     API_DISPLAY_MONITORS,
+    API_FOREGROUND,
     API_DISPLAY_BRIGHTNESS,
     API_DISPLAY_POWER,
     API_DISPLAY_CONTRAST,
@@ -92,11 +93,16 @@ class MediaServerClient:
             await self._session.close()
 
     def _get_headers(self) -> dict[str, str]:
-        """Get headers for API requests."""
-        return {
-            "Authorization": f"Bearer {self._token}",
-            "Content-Type": "application/json",
-        }
+        """Get headers for API requests.
+
+        When no token is configured the media server runs in anonymous mode
+        (``auth.auth_enabled()`` returns False), so we omit the Authorization
+        header entirely rather than sending ``Bearer `` with an empty value.
+        """
+        headers = {"Content-Type": "application/json"}
+        if self._token:
+            headers["Authorization"] = f"Bearer {self._token}"
+        return headers
 
     async def _request(
         self,
@@ -178,13 +184,17 @@ class MediaServerClient:
         """
         data = await self._request("GET", API_STATUS)
 
-        # Convert relative album_art_url to absolute URL with token and cache-buster
+        # Convert relative album_art_url to absolute URL with cache-buster
+        # (and token only when auth is enabled on the server side).
         if data.get("album_art_url") and data["album_art_url"].startswith("/"):
             # Add track info hash to force HA to re-fetch when track changes
             import hashlib
             track_id = f"{data.get('title', '')}-{data.get('artist', '')}"
             track_hash = hashlib.md5(track_id.encode()).hexdigest()[:8]
-            data["album_art_url"] = f"{self._base_url}{data['album_art_url']}?token={self._token}&t={track_hash}"
+            token_param = f"token={self._token}&" if self._token else ""
+            data["album_art_url"] = (
+                f"{self._base_url}{data['album_art_url']}?{token_param}t={track_hash}"
+            )
 
         return data
 
@@ -411,6 +421,15 @@ class MediaServerClient:
             "POST", f"{API_DISPLAY_PICTURE_MODE}/{monitor_id}", {"code": code}
         )
 
+    async def get_foreground(self) -> dict[str, Any]:
+        """Get the foreground window/process snapshot.
+
+        Returns the structured payload described in the media server's
+        ``ForegroundInfo`` dataclass: process name, window title, fullscreen
+        flag, owning monitor, geometry, and process start time.
+        """
+        return await self._request("GET", API_FOREGROUND)
+
 
 class MediaServerWebSocket:
     """WebSocket client for real-time media status updates."""
@@ -423,6 +442,7 @@ class MediaServerWebSocket:
         on_status_update: Callable[[dict[str, Any]], None],
         on_disconnect: Callable[[], None] | None = None,
         on_scripts_changed: Callable[[], None] | None = None,
+        on_foreground_update: Callable[[dict[str, Any]], None] | None = None,
     ) -> None:
         """Initialize the WebSocket client.
 
@@ -433,6 +453,7 @@ class MediaServerWebSocket:
             on_status_update: Callback when status update received
             on_disconnect: Callback when connection lost
             on_scripts_changed: Callback when scripts have changed
+            on_foreground_update: Callback when foreground process changes
         """
         self._host = host
         self._port = int(port)
@@ -440,7 +461,12 @@ class MediaServerWebSocket:
         self._on_status_update = on_status_update
         self._on_disconnect = on_disconnect
         self._on_scripts_changed = on_scripts_changed
-        self._ws_url = f"ws://{host}:{self._port}/api/media/ws?token={token}"
+        self._on_foreground_update = on_foreground_update
+        # The server's WS endpoint accepts an unauthenticated connection when
+        # api_tokens is empty (see media.py:websocket_endpoint), so we only
+        # append ?token=... when one was configured.
+        token_query = f"?token={token}" if token else ""
+        self._ws_url = f"ws://{host}:{self._port}/api/media/ws{token_query}"
         self._session: aiohttp.ClientSession | None = None
         self._ws: aiohttp.ClientWebSocketResponse | None = None
         self._receive_task: asyncio.Task | None = None
@@ -514,15 +540,19 @@ class MediaServerWebSocket:
                         ):
                             track_id = f"{status_data.get('title', '')}-{status_data.get('artist', '')}"
                             track_hash = hashlib.md5(track_id.encode()).hexdigest()[:8]
+                            token_param = f"token={self._token}&" if self._token else ""
                             status_data["album_art_url"] = (
                                 f"http://{self._host}:{self._port}"
-                                f"{status_data['album_art_url']}?token={self._token}&t={track_hash}"
+                                f"{status_data['album_art_url']}?{token_param}t={track_hash}"
                             )
                         self._on_status_update(status_data)
                     elif msg_type == "scripts_changed":
                         _LOGGER.info("Scripts changed notification received")
                         if self._on_scripts_changed:
                             self._on_scripts_changed()
+                    elif msg_type in ("foreground", "foreground_update"):
+                        if self._on_foreground_update:
+                            self._on_foreground_update(data.get("data", {}))
                     elif msg_type == "pong":
                         _LOGGER.debug("Received pong")
 

custom_components/remote_media_player/binary_sensor.py

@@ -10,10 +10,13 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity import EntityCategory
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_coordinator import DisplayCoordinator
 from .display_device import display_device_info
+from .foreground import FOREGROUND_BINARY_SENSORS
+from .foreground_coordinator import ForegroundCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -23,26 +26,38 @@ async def async_setup_entry(
     entry: ConfigEntry,
     async_add_entities: AddEntitiesCallback,
 ) -> None:
-    """Set up per-display binary sensor entities."""
-    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
-
-    try:
-        monitors = await client.get_display_monitors()
-    except MediaServerError as err:
-        _LOGGER.error("Failed to fetch display monitors: %s", err)
-        return
+    """Set up display + foreground binary sensor entities."""
+    store = hass.data[DOMAIN][entry.entry_id]
+    display_coordinator: DisplayCoordinator = store["display_coordinator"]
+    foreground_coordinator: ForegroundCoordinator | None = store.get(
+        "foreground_coordinator"
+    )
 
     entities: list[Any] = []
-    for monitor in monitors:
-        entities.append(DisplayPrimaryBinarySensor(client, entry, monitor))
-        entities.append(DisplayPowerControlBinarySensor(client, entry, monitor))
+    if display_coordinator.data:
+        for monitor in display_coordinator.data.values():
+            entities.append(
+                DisplayPrimaryBinarySensor(display_coordinator, entry, monitor)
+            )
+            entities.append(
+                DisplayPowerControlBinarySensor(display_coordinator, entry, monitor)
+            )
+
+    if foreground_coordinator is not None:
+        entities.extend(
+            cls(foreground_coordinator, entry) for cls in FOREGROUND_BINARY_SENSORS
+        )
 
     if entities:
         async_add_entities(entities)
-        _LOGGER.info("Added %d display binary sensor entities", len(entities))
+        _LOGGER.info(
+            "Added %d binary sensor entities (display + foreground)", len(entities)
+        )
 
 
-class _DisplayBinarySensorBase(BinarySensorEntity):
+class _DisplayBinarySensorBase(
+    CoordinatorEntity[DisplayCoordinator], BinarySensorEntity
+):
     """Common boilerplate for per-display diagnostic binary sensors."""
 
     _attr_has_entity_name = True
@@ -50,67 +65,58 @@ class _DisplayBinarySensorBase(BinarySensorEntity):
 
     def __init__(
         self,
-        client: MediaServerClient,
+        coordinator: DisplayCoordinator,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        self._client = client
+        super().__init__(coordinator)
         self._monitor_id: int = monitor["id"]
         self._attr_device_info = display_device_info(entry, monitor)
 
+    @property
+    def _monitor(self) -> dict[str, Any]:
+        if self.coordinator.data is None:
+            return {}
+        return self.coordinator.data.get(self._monitor_id, {})
+
 
 class DisplayPrimaryBinarySensor(_DisplayBinarySensorBase):
     """Indicates whether the display is the OS primary monitor."""
 
-    _attr_name = "Primary display"
+    _attr_translation_key = "primary_display"
     _attr_icon = "mdi:monitor-star"
 
     def __init__(
         self,
-        client: MediaServerClient,
+        coordinator: DisplayCoordinator,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        super().__init__(client, entry, monitor)
+        super().__init__(coordinator, entry, monitor)
         self._attr_unique_id = f"{entry.entry_id}_display_primary_{self._monitor_id}"
-        self._attr_is_on = bool(monitor.get("is_primary"))
 
-    async def async_update(self) -> None:
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    self._attr_is_on = bool(monitor.get("is_primary"))
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to refresh primary flag for monitor %d: %s", self._monitor_id, err)
+    @property
+    def is_on(self) -> bool:
+        return bool(self._monitor.get("is_primary"))
 
 
 class DisplayPowerControlBinarySensor(_DisplayBinarySensorBase):
     """Indicates whether DDC/CI power control is available for this display."""
 
-    _attr_name = "Power control supported"
+    _attr_translation_key = "power_control_supported"
     _attr_icon = "mdi:power-plug"
 
     def __init__(
         self,
-        client: MediaServerClient,
+        coordinator: DisplayCoordinator,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        super().__init__(client, entry, monitor)
-        self._attr_unique_id = f"{entry.entry_id}_display_power_supported_{self._monitor_id}"
-        self._attr_is_on = bool(monitor.get("power_supported"))
+        super().__init__(coordinator, entry, monitor)
+        self._attr_unique_id = (
+            f"{entry.entry_id}_display_power_supported_{self._monitor_id}"
+        )
 
-    async def async_update(self) -> None:
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    self._attr_is_on = bool(monitor.get("power_supported"))
-                    break
-        except MediaServerError as err:
-            _LOGGER.error(
-                "Failed to refresh power_supported flag for monitor %d: %s",
-                self._monitor_id, err,
-            )
+    @property
+    def is_on(self) -> bool:
+        return bool(self._monitor.get("power_supported"))

custom_components/remote_media_player/config_flow.py

@@ -44,10 +44,14 @@ async def validate_input(hass: HomeAssistant, data: dict[str, Any]) -> dict[str,
         CannotConnect: If connection fails
         InvalidAuth: If authentication fails
     """
+    # Token is optional: the media server can run without auth tokens, in which
+    # case verify_token() returns "anonymous" and accepts unauthenticated calls.
+    # If the server *does* have tokens configured, get_status() below will 401
+    # and we surface that as "invalid_auth" in the UI.
     client = MediaServerClient(
         host=data[CONF_HOST],
         port=data[CONF_PORT],
-        token=data[CONF_TOKEN],
+        token=data.get(CONF_TOKEN, "") or "",
     )
 
     try:
@@ -125,7 +129,7 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
                             mode=selector.NumberSelectorMode.BOX,
                         )
                     ),
-                    vol.Required(CONF_TOKEN): selector.TextSelector(
+                    vol.Optional(CONF_TOKEN, default=""): selector.TextSelector(
                         selector.TextSelectorConfig(
                             type=selector.TextSelectorType.PASSWORD
                         )

custom_components/remote_media_player/const.py

@@ -16,6 +16,10 @@ DEFAULT_POLL_INTERVAL = 5
 DEFAULT_NAME = "Remote Media Player"
 DEFAULT_USE_WEBSOCKET = True
 DEFAULT_RECONNECT_INTERVAL = 5
+# Displays change rarely (brightness/contrast/input source via physical buttons
+# or external automations), so a slow shared poll is plenty. The previous
+# per-entity polling produced ~9 calls every 30 s for a single monitor.
+DEFAULT_DISPLAY_POLL_INTERVAL = 30
 
 # API endpoints
 API_HEALTH = "/api/health"
@@ -37,6 +41,7 @@ API_WEBSOCKET = "/api/media/ws"
 API_BROWSER_FOLDERS = "/api/browser/folders"
 API_BROWSER_BROWSE = "/api/browser/browse"
 API_BROWSER_PLAY = "/api/browser/play"
+API_FOREGROUND = "/api/foreground"
 API_DISPLAY_MONITORS = "/api/display/monitors"
 API_DISPLAY_BRIGHTNESS = "/api/display/brightness"
 API_DISPLAY_POWER = "/api/display/power"

custom_components/remote_media_player/display_coordinator.py

@@ -0,0 +1,66 @@
+"""Shared coordinator for per-display monitor state.
+
+All display platforms (binary_sensor, number, select, sensor, switch) share a
+single poll cycle through this coordinator instead of each entity calling
+``GET /api/display/monitors`` from its own ``async_update``. With ~9 display
+entities per monitor, that change reduces the HTTP load on the media server
+from 9x per cycle to 1x per cycle.
+"""
+
+from __future__ import annotations
+
+import logging
+from datetime import timedelta
+from typing import Any
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+
+from .api_client import MediaServerClient, MediaServerError
+from .const import DEFAULT_DISPLAY_POLL_INTERVAL
+
+_LOGGER = logging.getLogger(__name__)
+
+# Coordinator data: monitor_id -> monitor dict (full payload as returned by
+# the media server, indexed for O(1) per-entity lookup).
+DisplayData = dict[int, dict[str, Any]]
+
+
+class DisplayCoordinator(DataUpdateCoordinator[DisplayData]):
+    """Polls ``/api/display/monitors`` once and fans out to all display entities."""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        client: MediaServerClient,
+        poll_interval: int = DEFAULT_DISPLAY_POLL_INTERVAL,
+    ) -> None:
+        super().__init__(
+            hass,
+            _LOGGER,
+            name="Remote Media Player Displays",
+            update_interval=timedelta(seconds=poll_interval),
+        )
+        self.client = client
+
+    async def _async_update_data(self) -> DisplayData:
+        try:
+            monitors = await self.client.get_display_monitors()
+        except MediaServerError as err:
+            raise UpdateFailed(f"Failed to fetch display monitors: {err}") from err
+        return {monitor["id"]: monitor for monitor in monitors}
+
+    def apply_optimistic(self, monitor_id: int, **fields: Any) -> None:
+        """Mutate cached monitor data after a successful write and notify entities.
+
+        Avoids a network round trip on every slider tick while still keeping
+        all sibling display entities in sync. The next scheduled refresh
+        reconciles with the server's authoritative state.
+        """
+        if self.data is None:
+            return
+        monitor = self.data.get(monitor_id)
+        if monitor is None:
+            return
+        monitor.update(fields)
+        self.async_update_listeners()

custom_components/remote_media_player/foreground.py

@@ -0,0 +1,225 @@
+"""Foreground process sensor and binary-sensor entities."""
+
+from __future__ import annotations
+
+import logging
+from datetime import datetime, timezone
+from typing import Any
+
+from homeassistant.components.binary_sensor import BinarySensorEntity
+from homeassistant.components.sensor import SensorDeviceClass, SensorEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import DOMAIN
+from .foreground_coordinator import ForegroundCoordinator
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def _foreground_device_info(entry: ConfigEntry) -> DeviceInfo:
+    """All foreground entities share one HA device, linked to the hub."""
+    return DeviceInfo(
+        identifiers={(DOMAIN, f"{entry.entry_id}_foreground")},
+        via_device=(DOMAIN, entry.entry_id),
+        name="Foreground",
+        manufacturer="Remote Media Player",
+        model="Foreground Process",
+    )
+
+
+class _ForegroundEntityBase(CoordinatorEntity[ForegroundCoordinator]):
+    """Boilerplate shared by every foreground entity."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator)
+        self._entry = entry
+        self._attr_device_info = _foreground_device_info(entry)
+
+    @property
+    def _data(self) -> dict[str, Any]:
+        return self.coordinator.data or {}
+
+    @property
+    def available(self) -> bool:
+        # Coordinator availability covers HTTP failures; the per-platform
+        # ``available`` flag in the payload reports e.g. "Wayland session".
+        if not super().available:
+            return False
+        return bool(self._data.get("available", True))
+
+
+class ForegroundProcessSensor(_ForegroundEntityBase, SensorEntity):
+    """Primary sensor: the process name plus full payload as attributes."""
+
+    _attr_icon = "mdi:application"
+    _attr_translation_key = "foreground_process"
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_process"
+
+    @property
+    def native_value(self) -> str | None:
+        return self._data.get("process_name")
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any]:
+        d = self._data
+        return {
+            "pid": d.get("pid"),
+            "executable_path": d.get("executable_path"),
+            "window_title": d.get("window_title"),
+            "window_handle": d.get("window_handle"),
+            "is_fullscreen": d.get("is_fullscreen"),
+            "is_minimized": d.get("is_minimized"),
+            "monitor_id": d.get("monitor_id"),
+            "monitor_geometry": d.get("monitor_geometry"),
+            "window_geometry": d.get("window_geometry"),
+            "started_at": d.get("started_at"),
+            "platform": d.get("platform"),
+            "is_browser": d.get("is_browser"),
+            "browser_page_title": d.get("browser_page_title"),
+            "browser_url": d.get("browser_url"),
+            "available": d.get("available"),
+            "error": d.get("error"),
+        }
+
+
+class ForegroundWindowTitleSensor(_ForegroundEntityBase, SensorEntity):
+    _attr_icon = "mdi:window-restore"
+    _attr_translation_key = "window_title"
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_window_title"
+
+    @property
+    def native_value(self) -> str | None:
+        return self._data.get("window_title")
+
+
+class ForegroundPidSensor(_ForegroundEntityBase, SensorEntity):
+    _attr_icon = "mdi:identifier"
+    _attr_translation_key = "pid"
+    _attr_entity_registry_enabled_default = False  # diagnostic-leaning
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_pid"
+
+    @property
+    def native_value(self) -> int | None:
+        return self._data.get("pid")
+
+
+class ForegroundMonitorSensor(_ForegroundEntityBase, SensorEntity):
+    _attr_icon = "mdi:monitor"
+    _attr_translation_key = "foreground_monitor"
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_monitor"
+
+    @property
+    def native_value(self) -> int | None:
+        return self._data.get("monitor_id")
+
+
+class ForegroundStartedAtSensor(_ForegroundEntityBase, SensorEntity):
+    """Process start time as a timezone-aware datetime."""
+
+    _attr_icon = "mdi:clock-start"
+    _attr_translation_key = "process_started"
+    _attr_device_class = SensorDeviceClass.TIMESTAMP
+    _attr_entity_registry_enabled_default = False
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_started_at"
+
+    @property
+    def native_value(self) -> datetime | None:
+        ts = self._data.get("started_at")
+        if ts is None:
+            return None
+        try:
+            return datetime.fromtimestamp(float(ts), tz=timezone.utc)
+        except (TypeError, ValueError, OSError):
+            return None
+
+
+class ForegroundFullscreenBinarySensor(_ForegroundEntityBase, BinarySensorEntity):
+    _attr_icon = "mdi:fullscreen"
+    _attr_translation_key = "fullscreen"
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_fullscreen"
+
+    @property
+    def is_on(self) -> bool:
+        return bool(self._data.get("is_fullscreen"))
+
+
+class ForegroundMinimizedBinarySensor(_ForegroundEntityBase, BinarySensorEntity):
+    _attr_icon = "mdi:window-minimize"
+    _attr_translation_key = "minimized"
+    _attr_entity_registry_enabled_default = False
+
+    def __init__(
+        self,
+        coordinator: ForegroundCoordinator,
+        entry: ConfigEntry,
+    ) -> None:
+        super().__init__(coordinator, entry)
+        self._attr_unique_id = f"{entry.entry_id}_foreground_minimized"
+
+    @property
+    def is_on(self) -> bool:
+        return bool(self._data.get("is_minimized"))
+
+
+FOREGROUND_SENSORS: tuple[type[_ForegroundEntityBase], ...] = (
+    ForegroundProcessSensor,
+    ForegroundWindowTitleSensor,
+    ForegroundPidSensor,
+    ForegroundMonitorSensor,
+    ForegroundStartedAtSensor,
+)
+
+FOREGROUND_BINARY_SENSORS: tuple[type[_ForegroundEntityBase], ...] = (
+    ForegroundFullscreenBinarySensor,
+    ForegroundMinimizedBinarySensor,
+)

custom_components/remote_media_player/foreground_coordinator.py

@@ -0,0 +1,59 @@
+"""Shared coordinator for the foreground (topmost) process snapshot.
+
+The media server already broadcasts the foreground process over the media
+WebSocket, but the WS client lives inside the media-player entity. Sensors
+need their own polling fallback so they keep working when the user disables
+the WebSocket feature in options, or while the WS is reconnecting.
+"""
+
+from __future__ import annotations
+
+import logging
+from datetime import timedelta
+from typing import Any
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+
+from .api_client import MediaServerClient, MediaServerError
+
+_LOGGER = logging.getLogger(__name__)
+
+# Foreground polls fairly often — the user-facing value (process name)
+# changes whenever the user alt-tabs, so a coarse poll would feel laggy.
+# The server side is cached at ~500ms so even a 5s poll stays cheap.
+DEFAULT_FOREGROUND_POLL_INTERVAL = 5
+
+
+class ForegroundCoordinator(DataUpdateCoordinator[dict[str, Any]]):
+    """Polls ``/api/foreground`` and fans out to sensor entities."""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        client: MediaServerClient,
+        poll_interval: int = DEFAULT_FOREGROUND_POLL_INTERVAL,
+    ) -> None:
+        super().__init__(
+            hass,
+            _LOGGER,
+            name="Remote Media Player Foreground",
+            update_interval=timedelta(seconds=poll_interval),
+        )
+        self.client = client
+
+    async def _async_update_data(self) -> dict[str, Any]:
+        try:
+            return await self.client.get_foreground()
+        except MediaServerError as err:
+            raise UpdateFailed(f"Failed to fetch foreground info: {err}") from err
+
+    def apply_websocket_snapshot(self, data: dict[str, Any]) -> None:
+        """Update from a push event (WebSocket) without an HTTP roundtrip.
+
+        Called by the media-player WS receiver when a ``foreground``/
+        ``foreground_update`` frame arrives. Updates ``self.data`` directly
+        so all listening sensors refresh immediately, and avoids the next
+        scheduled poll spending bandwidth on the same value.
+        """
+        self.async_set_updated_data(data)

custom_components/remote_media_player/manifest.json

@@ -8,5 +8,5 @@
   "integration_type": "device",
   "iot_class": "local_push",
   "requirements": ["aiohttp>=3.8.0"],
-  "version": "0.3.0"
+  "version": "0.3.1"
 }

custom_components/remote_media_player/media_player.py

@@ -172,6 +172,7 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
             on_status_update=self._handle_ws_status_update,
             on_disconnect=self._handle_ws_disconnect,
             on_scripts_changed=self._handle_ws_scripts_changed,
+            on_foreground_update=self._handle_ws_foreground_update,
         )
 
         if await self._ws_client.connect():
@@ -206,6 +207,19 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
         # Schedule reconnect attempt
         self._schedule_reconnect()
 
+    @callback
+    def _handle_ws_foreground_update(self, data: dict[str, Any]) -> None:
+        """Forward a foreground WS push into the shared foreground coordinator."""
+        if not self._entry:
+            return
+        try:
+            store = self.hass.data[DOMAIN][self._entry.entry_id]
+        except KeyError:
+            return
+        coordinator = store.get("foreground_coordinator")
+        if coordinator is not None:
+            coordinator.apply_websocket_snapshot(data)
+
     @callback
     def _handle_ws_scripts_changed(self) -> None:
         """Handle scripts changed notification from WebSocket."""

custom_components/remote_media_player/number.py

@@ -9,9 +9,11 @@ from homeassistant.components.number import NumberEntity, NumberMode
 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 .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_coordinator import DisplayCoordinator
 from .display_device import display_device_info
 
 _LOGGER = logging.getLogger(__name__)
@@ -23,123 +25,118 @@ async def async_setup_entry(
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up display brightness + contrast number entities from a config entry."""
-    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+    data = hass.data[DOMAIN][entry.entry_id]
+    client: MediaServerClient = data["client"]
+    coordinator: DisplayCoordinator = data["display_coordinator"]
 
-    try:
-        monitors = await client.get_display_monitors()
-    except MediaServerError as err:
-        _LOGGER.error("Failed to fetch display monitors: %s", err)
+    if not coordinator.data:
         return
 
     entities: list[Any] = []
-    for monitor in monitors:
+    for monitor in coordinator.data.values():
         if monitor.get("brightness") is not None:
-            entities.append(DisplayBrightnessNumber(client, entry, monitor))
+            entities.append(DisplayBrightnessNumber(coordinator, client, entry, monitor))
         if monitor.get("contrast_supported"):
-            entities.append(DisplayContrastNumber(client, entry, monitor))
+            entities.append(DisplayContrastNumber(coordinator, client, entry, monitor))
 
     if entities:
         async_add_entities(entities)
         _LOGGER.info("Added %d display number entities", len(entities))
 
 
-class DisplayBrightnessNumber(NumberEntity):
-    """Number entity for controlling display brightness."""
+class _DisplayNumberBase(CoordinatorEntity[DisplayCoordinator], NumberEntity):
+    """Shared boilerplate for per-display number entities."""
 
     _attr_has_entity_name = True
-    _attr_name = "Brightness"
     _attr_native_min_value = 0
     _attr_native_max_value = 100
     _attr_native_step = 1
     _attr_native_unit_of_measurement = "%"
     _attr_mode = NumberMode.SLIDER
+
+    def __init__(
+        self,
+        coordinator: DisplayCoordinator,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        super().__init__(coordinator)
+        self._client = client
+        self._monitor_id: int = monitor["id"]
+        self._attr_device_info = display_device_info(entry, monitor)
+
+    @property
+    def _monitor(self) -> dict[str, Any]:
+        if self.coordinator.data is None:
+            return {}
+        return self.coordinator.data.get(self._monitor_id, {})
+
+
+class DisplayBrightnessNumber(_DisplayNumberBase):
+    """Number entity for controlling display brightness."""
+
+    _attr_translation_key = "brightness"
     _attr_icon = "mdi:brightness-6"
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        """Initialize the display brightness entity."""
-        self._client = client
-        self._entry = entry
-        self._monitor_id: int = monitor["id"]
-        self._attr_native_value = monitor.get("brightness")
+        super().__init__(coordinator, client, entry, monitor)
         self._attr_unique_id = f"{entry.entry_id}_display_brightness_{self._monitor_id}"
-        self._attr_device_info = display_device_info(entry, monitor)
+
+    @property
+    def native_value(self) -> float | None:
+        value = self._monitor.get("brightness")
+        return None if value is None else float(value)
 
     async def async_set_native_value(self, value: float) -> None:
-        """Set the brightness value."""
         try:
             await self._client.set_display_brightness(self._monitor_id, int(value))
-            self._attr_native_value = int(value)
-            self.async_write_ha_state()
         except MediaServerError as err:
             _LOGGER.error("Failed to set brightness for monitor %d: %s", self._monitor_id, err)
-
-    async def async_update(self) -> None:
-        """Fetch updated brightness from the server."""
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    self._attr_native_value = monitor.get("brightness")
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to update brightness for monitor %d: %s", self._monitor_id, err)
+            return
+        self.coordinator.apply_optimistic(self._monitor_id, brightness=int(value))
 
 
-class DisplayContrastNumber(NumberEntity):
+class DisplayContrastNumber(_DisplayNumberBase):
     """Number entity for controlling DDC/CI display contrast."""
 
-    _attr_has_entity_name = True
-    _attr_name = "Contrast"
-    _attr_native_min_value = 0
-    _attr_native_max_value = 100
-    _attr_native_step = 1
-    _attr_native_unit_of_measurement = "%"
-    _attr_mode = NumberMode.SLIDER
+    _attr_translation_key = "contrast"
     _attr_icon = "mdi:contrast-circle"
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        """Initialize the display contrast entity."""
-        self._client = client
-        self._monitor_id: int = monitor["id"]
-        self._attr_native_value = monitor.get("contrast")
+        super().__init__(coordinator, client, entry, monitor)
         self._attr_unique_id = f"{entry.entry_id}_display_contrast_{self._monitor_id}"
-        self._attr_device_info = display_device_info(entry, monitor)
+
+    @property
+    def native_value(self) -> float | None:
+        value = self._monitor.get("contrast")
+        return None if value is None else float(value)
 
     async def async_set_native_value(self, value: float) -> None:
-        """Set the contrast value."""
         try:
             result = await self._client.set_display_contrast(self._monitor_id, int(value))
         except MediaServerError as err:
             _LOGGER.error("Failed to set contrast for monitor %d: %s", self._monitor_id, err)
             return
         if not result.get("success"):
+            # DDC/CI silently dropped the write — pull authoritative state from
+            # the server instead of trusting our optimistic value.
             _LOGGER.warning(
                 "Monitor %d rejected contrast %d (DDC/CI silently dropped)",
                 self._monitor_id, int(value),
             )
-            await self.async_update()
-            self.async_write_ha_state()
+            await self.coordinator.async_request_refresh()
             return
-        self._attr_native_value = int(value)
-        self.async_write_ha_state()
-
-    async def async_update(self) -> None:
-        """Fetch updated contrast from the server."""
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    self._attr_native_value = monitor.get("contrast")
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to update contrast for monitor %d: %s", self._monitor_id, err)
+        self.coordinator.apply_optimistic(self._monitor_id, contrast=int(value))

custom_components/remote_media_player/select.py

@@ -9,9 +9,11 @@ from homeassistant.components.select import SelectEntity
 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 .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_coordinator import DisplayCoordinator
 from .display_device import display_device_info
 
 _LOGGER = logging.getLogger(__name__)
@@ -23,61 +25,74 @@ async def async_setup_entry(
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up per-display select entities."""
-    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+    data = hass.data[DOMAIN][entry.entry_id]
+    client: MediaServerClient = data["client"]
+    coordinator: DisplayCoordinator = data["display_coordinator"]
 
-    try:
-        monitors = await client.get_display_monitors()
-    except MediaServerError as err:
-        _LOGGER.error("Failed to fetch display monitors: %s", err)
+    if not coordinator.data:
         return
 
     entities: list[Any] = []
-    for monitor in monitors:
+    for monitor in coordinator.data.values():
         if monitor.get("input_source_supported") and monitor.get("available_input_sources"):
-            entities.append(DisplayInputSourceSelect(client, entry, monitor))
+            entities.append(DisplayInputSourceSelect(coordinator, client, entry, monitor))
         if monitor.get("color_preset_supported") and monitor.get("available_color_presets"):
-            entities.append(DisplayColorPresetSelect(client, entry, monitor))
+            entities.append(DisplayColorPresetSelect(coordinator, client, entry, monitor))
         if monitor.get("picture_mode_supported") and monitor.get("available_picture_modes"):
-            entities.append(DisplayPictureModeSelect(client, entry, monitor))
+            entities.append(DisplayPictureModeSelect(coordinator, client, entry, monitor))
 
     if entities:
         async_add_entities(entities)
         _LOGGER.info("Added %d display select entities", len(entities))
 
 
-class _DisplaySelectBase(SelectEntity):
+class _DisplaySelectBase(CoordinatorEntity[DisplayCoordinator], SelectEntity):
     """Shared base for per-display selects."""
 
     _attr_has_entity_name = True
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
+        super().__init__(coordinator)
         self._client = client
         self._monitor_id: int = monitor["id"]
         self._attr_device_info = display_device_info(entry, monitor)
 
+    @property
+    def _monitor(self) -> dict[str, Any]:
+        if self.coordinator.data is None:
+            return {}
+        return self.coordinator.data.get(self._monitor_id, {})
+
 
 class DisplayInputSourceSelect(_DisplaySelectBase):
     """Switch the monitor's active input (HDMI1, DP1, ...)."""
 
-    _attr_name = "Input source"
+    _attr_translation_key = "input_source"
     _attr_icon = "mdi:video-input-hdmi"
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        super().__init__(client, entry, monitor)
+        super().__init__(coordinator, client, entry, monitor)
         self._attr_unique_id = f"{entry.entry_id}_display_input_{self._monitor_id}"
+        # Available inputs are a static EDID/DDC capability — capturing them
+        # at discovery avoids re-allocating the option list on every poll.
         self._attr_options = list(monitor.get("available_input_sources") or [])
-        current = monitor.get("input_source")
-        self._attr_current_option = current if current in self._attr_options else None
+
+    @property
+    def current_option(self) -> str | None:
+        current = self._monitor.get("input_source")
+        return current if current in self._attr_options else None
 
     async def async_select_option(self, option: str) -> None:
         try:
@@ -90,42 +105,32 @@ class DisplayInputSourceSelect(_DisplaySelectBase):
                 "Monitor %d rejected input source %s (DDC/CI silently dropped)",
                 self._monitor_id, option,
             )
-            # Re-read so the entity state reflects what the monitor actually did.
-            await self.async_update()
-            self.async_write_ha_state()
+            await self.coordinator.async_request_refresh()
             return
-        self._attr_current_option = option
-        self.async_write_ha_state()
-
-    async def async_update(self) -> None:
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    current = monitor.get("input_source")
-                    self._attr_current_option = current if current in self._attr_options else None
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to refresh input source for monitor %d: %s", self._monitor_id, err)
+        self.coordinator.apply_optimistic(self._monitor_id, input_source=option)
 
 
 class DisplayColorPresetSelect(_DisplaySelectBase):
     """Switch the monitor's color temperature preset (sRGB / 6500K / ...)."""
 
-    _attr_name = "Color preset"
+    _attr_translation_key = "color_preset"
     _attr_icon = "mdi:palette"
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        super().__init__(client, entry, monitor)
+        super().__init__(coordinator, client, entry, monitor)
         self._attr_unique_id = f"{entry.entry_id}_display_color_preset_{self._monitor_id}"
         self._attr_options = list(monitor.get("available_color_presets") or [])
-        current = monitor.get("color_preset")
-        self._attr_current_option = current if current in self._attr_options else None
+
+    @property
+    def current_option(self) -> str | None:
+        current = self._monitor.get("color_preset")
+        return current if current in self._attr_options else None
 
     async def async_select_option(self, option: str) -> None:
         try:
@@ -138,41 +143,29 @@ class DisplayColorPresetSelect(_DisplaySelectBase):
                 "Monitor %d rejected color preset %s (DDC/CI silently dropped)",
                 self._monitor_id, option,
             )
-            await self.async_update()
-            self.async_write_ha_state()
+            await self.coordinator.async_request_refresh()
             return
-        self._attr_current_option = option
-        self.async_write_ha_state()
-
-    async def async_update(self) -> None:
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    current = monitor.get("color_preset")
-                    self._attr_current_option = current if current in self._attr_options else None
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to refresh color preset for monitor %d: %s", self._monitor_id, err)
+        self.coordinator.apply_optimistic(self._monitor_id, color_preset=option)
 
 
 class DisplayPictureModeSelect(_DisplaySelectBase):
     """Switch the monitor's picture/scene mode via VCP 0xDC.
 
-    The server returns options as `[{code: int, label: str}, ...]`. We use
-    labels as the user-facing options and keep a label→code map for writes.
+    The server returns options as ``[{code: int, label: str}, ...]``. Labels
+    are exposed as user-facing options and a label→code map drives writes.
     """
 
-    _attr_name = "Picture mode"
+    _attr_translation_key = "picture_mode"
     _attr_icon = "mdi:image-multiple"
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        super().__init__(client, entry, monitor)
+        super().__init__(coordinator, client, entry, monitor)
         self._attr_unique_id = f"{entry.entry_id}_display_picture_mode_{self._monitor_id}"
 
         modes = monitor.get("available_picture_modes") or []
@@ -182,8 +175,11 @@ class DisplayPictureModeSelect(_DisplaySelectBase):
             if "label" in mode and "code" in mode
         }
         self._attr_options = list(self._label_to_code.keys())
-        current = monitor.get("picture_mode")
-        self._attr_current_option = current if current in self._attr_options else None
+
+    @property
+    def current_option(self) -> str | None:
+        current = self._monitor.get("picture_mode")
+        return current if current in self._attr_options else None
 
     async def async_select_option(self, option: str) -> None:
         code = self._label_to_code.get(option)
@@ -201,19 +197,6 @@ class DisplayPictureModeSelect(_DisplaySelectBase):
                 " implementation of VCP 0xDC may be incomplete",
                 self._monitor_id, option, code,
             )
-            await self.async_update()
-            self.async_write_ha_state()
+            await self.coordinator.async_request_refresh()
             return
-        self._attr_current_option = option
-        self.async_write_ha_state()
-
-    async def async_update(self) -> None:
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    current = monitor.get("picture_mode")
-                    self._attr_current_option = current if current in self._attr_options else None
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to refresh picture mode for monitor %d: %s", self._monitor_id, err)
+        self.coordinator.apply_optimistic(self._monitor_id, picture_mode=option)

custom_components/remote_media_player/sensor.py

@@ -10,10 +10,13 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity import EntityCategory
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_coordinator import DisplayCoordinator
 from .display_device import display_device_info
+from .foreground import FOREGROUND_SENSORS
+from .foreground_coordinator import ForegroundCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -23,54 +26,53 @@ async def async_setup_entry(
     entry: ConfigEntry,
     async_add_entities: AddEntitiesCallback,
 ) -> None:
-    """Set up per-display sensor entities."""
-    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+    """Set up display + foreground sensor entities."""
+    store = hass.data[DOMAIN][entry.entry_id]
+    display_coordinator: DisplayCoordinator = store["display_coordinator"]
+    foreground_coordinator: ForegroundCoordinator | None = store.get(
+        "foreground_coordinator"
+    )
 
-    try:
-        monitors = await client.get_display_monitors()
-    except MediaServerError as err:
-        _LOGGER.error("Failed to fetch display monitors: %s", err)
-        return
+    entities: list[Any] = []
 
-    entities = [
-        DisplayResolutionSensor(client, entry, monitor)
-        for monitor in monitors
-        if monitor.get("resolution")
-    ]
+    if display_coordinator.data:
+        entities.extend(
+            DisplayResolutionSensor(display_coordinator, entry, monitor)
+            for monitor in display_coordinator.data.values()
+            if monitor.get("resolution")
+        )
+
+    if foreground_coordinator is not None:
+        entities.extend(
+            cls(foreground_coordinator, entry) for cls in FOREGROUND_SENSORS
+        )
 
     if entities:
         async_add_entities(entities)
-        _LOGGER.info("Added %d display sensor entities", len(entities))
+        _LOGGER.info("Added %d sensor entities (display + foreground)", len(entities))
 
 
-class DisplayResolutionSensor(SensorEntity):
+class DisplayResolutionSensor(CoordinatorEntity[DisplayCoordinator], SensorEntity):
     """Diagnostic sensor reporting the EDID-derived display resolution."""
 
     _attr_has_entity_name = True
-    _attr_name = "Resolution"
+    _attr_translation_key = "resolution"
     _attr_entity_category = EntityCategory.DIAGNOSTIC
     _attr_icon = "mdi:monitor-screenshot"
 
     def __init__(
         self,
-        client: MediaServerClient,
+        coordinator: DisplayCoordinator,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        """Initialize the display resolution sensor."""
-        self._client = client
+        super().__init__(coordinator)
         self._monitor_id: int = monitor["id"]
-        self._attr_native_value = monitor.get("resolution")
         self._attr_unique_id = f"{entry.entry_id}_display_resolution_{self._monitor_id}"
         self._attr_device_info = display_device_info(entry, monitor)
 
-    async def async_update(self) -> None:
-        """Refresh resolution from the server (rarely changes)."""
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    self._attr_native_value = monitor.get("resolution")
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to refresh resolution for monitor %d: %s", self._monitor_id, err)
+    @property
+    def native_value(self) -> str | None:
+        if self.coordinator.data is None:
+            return None
+        return self.coordinator.data.get(self._monitor_id, {}).get("resolution")

custom_components/remote_media_player/strings.json

@@ -14,7 +14,7 @@
         "data_description": {
           "host": "Hostname or IP address of the Media Server",
           "port": "Port number (default: 8765)",
-          "token": "API authentication token from the server configuration",
+          "token": "API authentication token from the server configuration. Leave blank if the server runs without authentication.",
           "name": "Display name for this media player",
           "poll_interval": "How often to poll for status updates (seconds)"
         }
@@ -42,6 +42,34 @@
       }
     }
   },
+  "entity": {
+    "binary_sensor": {
+      "primary_display": { "name": "Primary display" },
+      "power_control_supported": { "name": "Power control supported" },
+      "fullscreen": { "name": "Fullscreen" },
+      "minimized": { "name": "Minimized" }
+    },
+    "sensor": {
+      "resolution": { "name": "Resolution" },
+      "foreground_process": { "name": "Foreground process" },
+      "window_title": { "name": "Window title" },
+      "pid": { "name": "PID" },
+      "foreground_monitor": { "name": "Monitor" },
+      "process_started": { "name": "Process started" }
+    },
+    "number": {
+      "brightness": { "name": "Brightness" },
+      "contrast": { "name": "Contrast" }
+    },
+    "switch": {
+      "power": { "name": "Power" }
+    },
+    "select": {
+      "input_source": { "name": "Input source" },
+      "color_preset": { "name": "Color preset" },
+      "picture_mode": { "name": "Picture mode" }
+    }
+  },
   "services": {
     "execute_script": {
       "name": "Execute Script",

custom_components/remote_media_player/switch.py

@@ -9,9 +9,11 @@ from homeassistant.components.switch import SwitchDeviceClass, SwitchEntity
 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 .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_coordinator import DisplayCoordinator
 from .display_device import display_device_info
 
 _LOGGER = logging.getLogger(__name__)
@@ -23,21 +25,16 @@ async def async_setup_entry(
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up display power switch entities from a config entry."""
-    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+    data = hass.data[DOMAIN][entry.entry_id]
+    client: MediaServerClient = data["client"]
+    coordinator: DisplayCoordinator = data["display_coordinator"]
 
-    try:
-        monitors = await client.get_display_monitors()
-    except MediaServerError as err:
-        _LOGGER.error("Failed to fetch display monitors: %s", err)
+    if not coordinator.data:
         return
 
     entities = [
-        DisplayPowerSwitch(
-            client=client,
-            entry=entry,
-            monitor=monitor,
-        )
-        for monitor in monitors
+        DisplayPowerSwitch(coordinator, client, entry, monitor)
+        for monitor in coordinator.data.values()
         if monitor.get("power_supported", False)
     ]
 
@@ -46,63 +43,62 @@ async def async_setup_entry(
         _LOGGER.info("Added %d display power switch entities", len(entities))
 
 
-class DisplayPowerSwitch(SwitchEntity):
+class DisplayPowerSwitch(CoordinatorEntity[DisplayCoordinator], SwitchEntity):
     """Switch entity for controlling display power."""
 
     _attr_has_entity_name = True
     _attr_device_class = SwitchDeviceClass.SWITCH
-    _attr_name = "Power"
+    _attr_translation_key = "power"
 
     def __init__(
         self,
+        coordinator: DisplayCoordinator,
         client: MediaServerClient,
         entry: ConfigEntry,
         monitor: dict[str, Any],
     ) -> None:
-        """Initialize the display power switch."""
+        super().__init__(coordinator)
         self._client = client
-        self._entry = entry
         self._monitor_id: int = monitor["id"]
-        self._attr_is_on = monitor.get("power_on", True)
         self._attr_unique_id = f"{entry.entry_id}_display_power_{self._monitor_id}"
         self._attr_device_info = display_device_info(entry, monitor)
 
+    @property
+    def _monitor(self) -> dict[str, Any]:
+        if self.coordinator.data is None:
+            return {}
+        return self.coordinator.data.get(self._monitor_id, {})
+
+    @property
+    def is_on(self) -> bool:
+        return bool(self._monitor.get("power_on", True))
+
     @property
     def icon(self) -> str:
-        """Return icon based on power state."""
-        return "mdi:monitor" if self._attr_is_on else "mdi:monitor-off"
+        return "mdi:monitor" if self.is_on else "mdi:monitor-off"
+
+    async def _set_power(self, on: bool) -> None:
+        try:
+            result = await self._client.set_display_power(self._monitor_id, on)
+        except MediaServerError as err:
+            _LOGGER.error(
+                "Failed to %s monitor %d: %s",
+                "turn on" if on else "turn off",
+                self._monitor_id,
+                err,
+            )
+            return
+        if not result.get("success"):
+            _LOGGER.error(
+                "Failed to %s monitor %d",
+                "turn on" if on else "turn off",
+                self._monitor_id,
+            )
+            return
+        self.coordinator.apply_optimistic(self._monitor_id, power_on=on)
 
     async def async_turn_on(self, **kwargs: Any) -> None:
-        """Turn the monitor on."""
-        try:
-            result = await self._client.set_display_power(self._monitor_id, True)
-            if result.get("success"):
-                self._attr_is_on = True
-                self.async_write_ha_state()
-            else:
-                _LOGGER.error("Failed to turn on monitor %d", self._monitor_id)
-        except MediaServerError as err:
-            _LOGGER.error("Failed to turn on monitor %d: %s", self._monitor_id, err)
+        await self._set_power(True)
 
     async def async_turn_off(self, **kwargs: Any) -> None:
-        """Turn the monitor off."""
-        try:
-            result = await self._client.set_display_power(self._monitor_id, False)
-            if result.get("success"):
-                self._attr_is_on = False
-                self.async_write_ha_state()
-            else:
-                _LOGGER.error("Failed to turn off monitor %d", self._monitor_id)
-        except MediaServerError as err:
-            _LOGGER.error("Failed to turn off monitor %d: %s", self._monitor_id, err)
-
-    async def async_update(self) -> None:
-        """Fetch updated power state from the server."""
-        try:
-            monitors = await self._client.get_display_monitors()
-            for monitor in monitors:
-                if monitor["id"] == self._monitor_id:
-                    self._attr_is_on = monitor.get("power_on", True)
-                    break
-        except MediaServerError as err:
-            _LOGGER.error("Failed to update power state for monitor %d: %s", self._monitor_id, err)
+        await self._set_power(False)

custom_components/remote_media_player/translations/en.json

@@ -14,7 +14,7 @@
         "data_description": {
           "host": "Hostname or IP address of the Media Server",
           "port": "Port number (default: 8765)",
-          "token": "API authentication token from the server configuration",
+          "token": "API authentication token from the server configuration. Leave blank if the server runs without authentication.",
           "name": "Display name for this media player",
           "poll_interval": "How often to poll for status updates (seconds)"
         }
@@ -42,6 +42,34 @@
       }
     }
   },
+  "entity": {
+    "binary_sensor": {
+      "primary_display": { "name": "Primary display" },
+      "power_control_supported": { "name": "Power control supported" },
+      "fullscreen": { "name": "Fullscreen" },
+      "minimized": { "name": "Minimized" }
+    },
+    "sensor": {
+      "resolution": { "name": "Resolution" },
+      "foreground_process": { "name": "Foreground process" },
+      "window_title": { "name": "Window title" },
+      "pid": { "name": "PID" },
+      "foreground_monitor": { "name": "Monitor" },
+      "process_started": { "name": "Process started" }
+    },
+    "number": {
+      "brightness": { "name": "Brightness" },
+      "contrast": { "name": "Contrast" }
+    },
+    "switch": {
+      "power": { "name": "Power" }
+    },
+    "select": {
+      "input_source": { "name": "Input source" },
+      "color_preset": { "name": "Color preset" },
+      "picture_mode": { "name": "Picture mode" }
+    }
+  },
   "services": {
     "execute_script": {
       "name": "Execute Script",

custom_components/remote_media_player/translations/ru.json

@@ -14,7 +14,7 @@
         "data_description": {
           "host": "Имя хоста или IP-адрес Media Server",
           "port": "Номер порта (по умолчанию: 8765)",
-          "token": "Токен аутентификации из конфигурации сервера",
+          "token": "Токен аутентификации из конфигурации сервера. Оставьте пустым, если сервер работает без аутентификации.",
           "name": "Отображаемое имя медиаплеера",
           "poll_interval": "Частота опроса статуса (в секундах)"
         }
@@ -42,6 +42,34 @@
       }
     }
   },
+  "entity": {
+    "binary_sensor": {
+      "primary_display": { "name": "Основной дисплей" },
+      "power_control_supported": { "name": "Поддержка управления питанием" },
+      "fullscreen": { "name": "Полноэкранный режим" },
+      "minimized": { "name": "Свёрнуто" }
+    },
+    "sensor": {
+      "resolution": { "name": "Разрешение" },
+      "foreground_process": { "name": "Активный процесс" },
+      "window_title": { "name": "Заголовок окна" },
+      "pid": { "name": "PID" },
+      "foreground_monitor": { "name": "Монитор" },
+      "process_started": { "name": "Запуск процесса" }
+    },
+    "number": {
+      "brightness": { "name": "Яркость" },
+      "contrast": { "name": "Контрастность" }
+    },
+    "switch": {
+      "power": { "name": "Питание" }
+    },
+    "select": {
+      "input_source": { "name": "Источник сигнала" },
+      "color_preset": { "name": "Цветовая температура" },
+      "picture_mode": { "name": "Режим изображения" }
+    }
+  },
   "services": {
     "execute_script": {
       "name": "Выполнить скрипт",