blueprint:
  name: Opposite State Synchronizer
  description: >
    Keeps two entities in opposite states. If entity 1 turns on, entity 2 turns off, and vice versa.
  domain: automation
  input:
    entity_1:
      name: Entity 1
      selector:
        entity:
          domain:
            - light
            - switch
    entity_2:
      name: Entity 2
      selector:
        entity:
          domain:
            - light
            - switch

trigger:
  - platform: state
    entity_id: !input entity_1
    id: entity_1
  - platform: state
    entity_id: !input entity_2
    id: entity_2

condition: []

action:
  - choose:
      - conditions:
          - condition: trigger
            id: entity_1
          - condition: state
            entity_id: !input entity_1
            state: "on"
        sequence:
          - service: homeassistant.turn_off
            target:
              entity_id: !input entity_2
      - conditions:
          - condition: trigger
            id: entity_1
          - condition: state
            entity_id: !input entity_1
            state: "off"
        sequence:
          - service: homeassistant.turn_on
            target:
              entity_id: !input entity_2
      - conditions:
          - condition: trigger
            id: entity_2
          - condition: state
            entity_id: !input entity_2
            state: "on"
        sequence:
          - service: homeassistant.turn_off
            target:
              entity_id: !input entity_1
      - conditions:
          - condition: trigger
            id: entity_2
          - condition: state
            entity_id: !input entity_2
            state: "off"
        sequence:
          - service: homeassistant.turn_on
            target:
              entity_id: !input entity_1
mode: single