switch_turn_on_script.yaml

alias: SwitchTurnOn
sequence:
  - if:
      - condition: template
        value_template: "{{ states(switch_entity_id) == 'off' }}"
    then:
      - if:
          - condition: template
            value_template: |
              {{ switch_entity_id.startswith('light') }}
        then:
          - service: light.turn_on
            target:
              device_id: "{{ device_id(switch_entity_id) }}"
        else:
          - service: switch.turn_on
            target:
              device_id: "{{ device_id(switch_entity_id) }}"
  - if:
      - condition: template
        value_template: |
          {{ offset is defined and
             switch_entity_id.startswith('light') and 
             ((offset > 0 and (state_attr(switch_entity_id, 'brightness') or 40) < 255) or
              (offset < 0 and (state_attr(switch_entity_id, 'brightness') or 40) > 40)) }}
    then:
      - service: light.turn_on
        data_template:
          brightness: >-
            {{[[(state_attr(switch_entity_id, 'brightness') or 40) + offset,
            40]|max, 255]|min}}
        target:
          device_id: "{{ device_id(switch_entity_id) }}"
mode: single
icon: mdi:light-switch