Universal Media Player based on Android TV

1

My TV supports Android TV. But there is no way to switch it on with Android TV, so I use wake_on_lan instead.

Now I need to create one device to support ‘turn_on’, ‘turn_off’, 'volume_up` etc.

I have the following code currently:

# https://www.home-assistant.io/integrations/wake_on_lan
wake_on_lan:

switch:
  - platform: wake_on_lan
    mac: 'd8:12:34:56:78:90' # TV

media_player:
  - platform: universal
    name: 'TV test'
    children:
      - media_player.android_tv_192_168_1_64 # https://www.home-assistant.io/integrations/androidtv/
    commands:
      turn_on:
        service: switch.turn_on
        data: {}
        target:
          entity_id: switch.wake_on_lan
      volume_up:
        service:  media_player.volume_up
        target: 
          entity_id: media_player.android_tv_192_168_1_64
      volume_down:
        service:  media_player.volume_down
        target: 
          entity_id: media_player.android_tv_192_168_1_64
      volume_mute:
        service:  androidtv.adb_command
        target: 
          entity_id: media_player.android_tv_192_168_1_64
        data:
          command: 'MUTE'
    device_class: tv
    unique_id: 'tv_test'

There are two problems:

  1. I have to repeat all android tv functions in this config manually;
  2. not all android tv functions are listed on the docs, I am trying to find them at source code - https://github.com/home-assistant/core/blob/838691f22f27852a05313809cdf9c51094ad3798/homeassistant/components/androidtv/media_player.py;
  3. volume up/volume down works well from android tv integration, with my universal player it doesn’t work sometimes.

Is there any better solution to achieve what I want?