[plex] Only restore lights if plex dimmed them

packages/plex.yaml

@@ -1,8 +1,16 @@
+input_boolean:
+  plex_dimmed_lights:
+    name: Lights have been dimmed
+    initial: off
+
 automation:
   - alias: Dim lights for movie
     action:
       - service: scene.turn_on
         entity_id: scene.dimmed_brightness
+      - service: input_boolean.turn_on
+        data:
+          entity_id: input_boolean.plex_dimmed_lights
     trigger:
       - platform: state
         entity_id: media_player.plex_ps4
@@ -25,6 +33,9 @@ automation:
             {% else %}
               scene.normal_brightness
             {% endif %}
+      - service: input_boolean.turn_off
+        data:
+          entity_id: input_boolean.plex_dimmed_lights
     trigger:
       - platform: state
         entity_id: media_player.plex_ps4
@@ -34,6 +45,9 @@ automation:
       - condition: state
         entity_id: light.living_room
         state: 'on'
+      - condition: state
+        entity_id: input_boolean.plex_dimmed_lights
+        state: 'on'
 
 group:
   Plex: