automations.yaml

- alias: Control switches via MQTT
  trigger:
    platform: mqtt
    topic: +/switch/+/state/cmd
  action:
    - service_template: >
        homeassistant.turn_{{trigger.payload}}
      data_template:
        entity_id: >-
          {{ trigger.topic.split('/')[-4] }}.{{ trigger.topic.split('/')[-3] }}
          

- alias: Control lights state via MQTT
  trigger:
    platform: mqtt
    topic: +/light/+/state/cmd
  action:
    - service_template: >
        homeassistant.turn_{{trigger.payload}}
      data_template:
        entity_id: >-
          {{ trigger.topic.split('/')[-4] }}.{{ trigger.topic.split('/')[-3] }}


- alias: Control lights brightness via MQTT
  trigger:
    platform: mqtt
    topic: +/light/+/brightness/cmd
  action:
    - service_template: >
        homeassistant.turn_on
      data_template:
        brightness: '{{trigger.payload}}'
        entity_id: >-
          {{ trigger.topic.split('/')[-4] }}.{{ trigger.topic.split('/')[-3] }}