template_to_switch_sync.yaml

blueprint:
  name: Sync template to switch
  description: Turn on a switch when template is true
  domain: automation
  input:
    template_string:
      name: Template string
      description: Do not include {{ }} or {% %} - just a single expression that will evaluate to true/false
      default: "<some template here e.g. is_state('binary_sensor.abc', 'on')>"
      selector:
        template:
    switch_entities:
      name: Entities
      selector:
        target:
          entity:
            domain:
              - switch
              - light
              - input_boolean
    on_delay:
      name: (Optional) How long the template must be 'true' before switching
      default: 0:00:00
      selector:
        duration:
    off_delay:
      name: (Optional) How long the template must be 'false' before switching
      default: 0:00:00
      selector:
        duration:
    trigger_at_homeassistant_startup:
      name: (Optional) Trigger at Home Assistant startup
      description: Trigger the target state check and enforcement at Home Assistant startup.
      default: false
      selector:
        boolean:
  source_url: https://gist.github.com/megakid/7b395af9db697a9e8c773fb14ec74f27

trigger_variables:
  templatestr: !input template_string
trigger:
  - platform: homeassistant
    event: start
  - platform: template
    for: !input on_delay
    value_template: |-
      {% set t = '{{ ' + templatestr + ' }}' %}
      {{ ct_eval(t) }}
  - platform: template
    for: !input off_delay
    value_template: |-
      {% set t = '{{ ' + templatestr + ' }}' %}
      {{ ct_eval('{{ not bool("' + (ct_eval(t) | string) + '") }}') }}
#{% set t = '{{ ' + templatestr + ' }}' %}
variables:
  trigger_at_homeassistant_startup: !input trigger_at_homeassistant_startup
condition:
  - condition: template
    value_template: '{{ trigger.platform!="homeassistant" or trigger_at_homeassistant_startup }}'
action:
  - if:
      - condition: template
        value_template: |-
          {{ ct_eval("{{ " + templatestr + " }}") }}
    then:
      - service: homeassistant.turn_on
        target: !input switch_entities
    else:
      - service: homeassistant.turn_off
        target: !input switch_entities
mode: restart