unavailable_device_notificator.yaml

blueprint:
  name: Unavailable Device Notificator
  description: Execute actions when any non-light device becomes unavailable, with time restrictions and optional first change ignore.
  domain: automation
  author: Edison Montes @_GeekMD_
  homeassistant:
    min_version: 2024.6.0

  input:
    start_time:
      name: Start Time
      description: The start time when notifications are allowed.
      default: "08:00:00"
      selector:
        time:

    end_time:
      name: End Time
      description: The end time when notifications are allowed.
      default: "22:00:00"
      selector:
        time:

    ignore_first_change:
      name: Ignore First Change
      description: Ignore the first unavailable event after Home Assistant restart or automation reload.
      default: true
      selector:
        boolean:

    actions:
      name: Actions
      description: Actions to perform when a device becomes unavailable. You can use {{ message }} or {{ entities }}.
      selector:
        action:

variables:
  entity_id: "{{ trigger.event.data.entity_id }}"
  domain: "{{ entity_id.split('.')[0] }}"
  old_state: "{{ trigger.event.data.old_state }}"
  new_state: "{{ trigger.event.data.new_state }}"
  friendly_name: >
    {% set name = state_attr(entity_id, 'friendly_name') %}
    {{ name if name else entity_id }}
  entities: "{{ [friendly_name] }}"
  count: "{{ entities | count }}"
  plural: "{{ 'device' if count == 1 else 'devices' }}"
  message: >
    The following {{ plural }} became unavailable:
    {{ entities | join(', ') }}

trigger:
  - platform: event
    event_type: state_changed

condition:
  - condition: template
    value_template: "{{ new_state is not none and new_state.state == 'unavailable' }}"

  - condition: template
    value_template: "{{ domain != 'light' }}"

  - condition: time
    after: !input start_time
    before: !input end_time

  - condition: template
    value_template: >
      {% set ignore = (new_state is not none and new_state.state == 'unavailable' and (now() - as_datetime(new_state.last_changed)).total_seconds() < 30) %}
      {{ (not ignore) or (not (inputs.ignore_first_change | default(true))) }}

action:
  - choose: []
    default: !input actions

mode: single