pulled out some variables

apps/apps.yaml

@@ -5,3 +5,5 @@ hello_world:
 living_room_tv:
   module: tv
   class: LivingRoomTV
+  tv_entity: media_player.living_room_tv
+  remote_entity: remote.broadlink_remote

apps/tv.py

@@ -1,28 +1,43 @@
-import asyncio
+from dataclasses import dataclass, field, fields
 from datetime import timedelta
 
+from appdaemon.entity import Entity
 from appdaemon.plugins.hass.hassapi import Hass
 
 
+@dataclass(init=False)
 class LivingRoomTV(Hass):
+    tv_entity: str
+    remote_entity: str
+
     def initialize(self):
-        self.listen_state(self.turn_on_soundbar, 'media_player.living_room_tv', new='playing')
-        self.listen_state(self.debug_state, 'media_player.living_room_tv')
-        self.listen_state(self.recast_lovelace, 'media_player.living_room_tv', attribute='all')
+        self.log(f'Media Player Entity: {self.tv_entity.friendly_name} ({self.tv_entity.entity_id})')
+        self.log(f'Remote Entity: {self.remote_entity.friendly_name} ({self.remote_entity.entity_id})')
+
+        self.listen_state(self.turn_on_soundbar, self.tv_entity.entity_id, new='playing')
+        self.listen_state(self.debug_state, self.tv_entity.entity_id)
+        self.listen_state(self.recast_lovelace, self.tv_entity.entity_id, attribute='all')
         # self.listen_state(self.cancel_callbacks, 'media_player.sony_kd_65x85k', new='off')
-        # self.cancel_callbacks()
+
+    @property
+    def tv_entity(self) -> Entity:
+        return self.get_entity(self.args['tv_entity'])
+
+    @property
+    def remote_entity(self) -> Entity:
+        return self.get_entity(self.args['remote_entity'])
 
     def debug_state(self, entity=None, attribute=None, old=None, new=None, kwargs=None):
         self.log(f'{old} -> {new}')
 
     def turn_on_soundbar(self, entity=None, attribute=None, old=None, new=None, kwargs=None):
-        if self.get_state('remote.broadlink_remote') != 'on':
+        if self.remote_entity.state != 'on':
             self.log('Turning on remote')
-            self.turn_on('remote.broadlink_remote')
-        
+            self.remote_entity.turn_on()
+
         self.log('Turning on soundbar')
         self.call_service(service='remote/send_command',
-                          entity_id='remote.broadlink_remote',
+                          entity_id=self.remote_entity.entity_id,
                           device='BoseTV', command='TV')
 
     def recast_lovelace(self, entity=None, attribute=None, old=None, new=None, kwargs=None):
@@ -30,10 +45,10 @@ class LivingRoomTV(Hass):
         self.cancel_callbacks()
         if new['state'] == 'playing':
             if 'lovelace' in (app_name := new['attributes']['app_name']).lower():
-                delay = timedelta(minutes=10)
+                delay = timedelta(minutes=9, seconds=30)
                 self.log(f'Recasting Lovelace in {delay}')
                 self.run_in(
-                    callback=lambda kwargs: self.turn_off('media_player.living_room_tv'),
+                    callback=lambda kwargs: self.tv_entity.turn_off(),
                     delay=delay.total_seconds()
                 )
                 self.run_in(
@@ -48,7 +63,7 @@ class LivingRoomTV(Hass):
             'cast/show_lovelace_view',
             view_path='tv',
             dashboard_path='lovelace',
-            entity_id='media_player.living_room_tv',
+            entity_id=self.tv_entity.entity_id,
         )
 
     def cancel_callbacks(self, entity=None, attribute=None, old=None, new=None, kwargs=None):