From 9b312180c69890fcad3d0adea76ccfd46b339544 Mon Sep 17 00:00:00 2001
From: darkrain-nl <24763370+darkrain-nl@users.noreply.github.com>
Date: Sat, 5 Sep 2026 17:23:41 +0200
Subject: [PATCH] Add app_id attribute to webostv media player (#181385)

---
 homeassistant/components/webostv/media_player.py  |  1 +
 .../webostv/snapshots/test_media_player.ambr      |  1 +
 tests/components/webostv/test_media_player.py     | 15 +++++++++++++++
 3 files changed, 17 insertions(+)

diff --git a/homeassistant/components/webostv/media_player.py b/homeassistant/components/webostv/media_player.py
index 571080a17b31..a5744cdca76a 100644
--- a/homeassistant/components/webostv/media_player.py
+++ b/homeassistant/components/webostv/media_player.py
@@ -148,6 +148,7 @@ class LgWebOSMediaPlayerEntity(WebOsTvEntity, RestoreEntity, MediaPlayerEntity):
 
         self._attr_source = self._current_source
         self._attr_source_list = sorted(self._source_list)
+        self._attr_app_id = tv_state.current_app_id
 
         self._attr_media_content_type = None
         if tv_state.current_app_id == LIVE_TV_APP_ID:
diff --git a/tests/components/webostv/snapshots/test_media_player.ambr b/tests/components/webostv/snapshots/test_media_player.ambr
index b1b172d23bbb..2f9aa2897bdd 100644
--- a/tests/components/webostv/snapshots/test_media_player.ambr
+++ b/tests/components/webostv/snapshots/test_media_player.ambr
@@ -12,6 +12,7 @@
 # name: test_entity_attributes
   StateSnapshot({
     'attributes': ReadOnlyDict({
+      <MediaPlayerEntityStateAttribute.APP_ID: 'app_id'>: 'com.webos.app.livetv',
       <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'tv',
       <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'LG webOS TV MODEL',
       <MediaPlayerEntityStateAttribute.MEDIA_VOLUME_MUTED: 'is_volume_muted'>: False,
diff --git a/tests/components/webostv/test_media_player.py b/tests/components/webostv/test_media_player.py
index bd6f97e18f66..d4f05c3ea69a 100644
--- a/tests/components/webostv/test_media_player.py
+++ b/tests/components/webostv/test_media_player.py
@@ -11,6 +11,7 @@ from syrupy.filters import props
 
 from homeassistant.components import automation
 from homeassistant.components.media_player import (
+    ATTR_APP_ID,
     ATTR_INPUT_SOURCE,
     ATTR_INPUT_SOURCE_LIST,
     ATTR_MEDIA_CONTENT_ID,
@@ -537,6 +538,20 @@ async def test_update_sources_live_tv_find(hass: HomeAssistant, client) -> None:
     assert len(sources) == 1
 
 
+async def test_app_id(hass: HomeAssistant, client) -> None:
+    """Test app_id follows the foreground app id reported by the TV."""
+    await setup_webostv(hass)
+    await client.mock_state_update()
+
+    assert hass.states.get(ENTITY_ID).attributes[ATTR_APP_ID] == LIVE_TV_APP_ID
+
+    # apps outside the source list still get a usable app id
+    client.tv_state.current_app_id = "com.webos.app.home"
+    await client.mock_state_update()
+
+    assert hass.states.get(ENTITY_ID).attributes[ATTR_APP_ID] == "com.webos.app.home"
+
+
 async def test_client_disconnected(
     hass: HomeAssistant,
     client,