HA - Assist Event Scheduler: Use dashboard card to schedule one-time home automation actions via formatted calendar event.

assist_scheduler.yaml

#----------------------- PRE-REQUISITES -------------------------
# You will need to install the following custom cards to use the include card configuration:
#   - Text-input-row Card (https://github.com/gadgetchnnel/lovelace-text-input-row)
#   - Custom Button Card (https://github.com/custom-cards/button-card)
#   - Custom Stack-In-Card (https://github.com/custom-cards/stack-in-card) 
#
# You will need to create the following helpers:
#   - input_datetime.scheduled_action
#   - input_text.scheduled_action_message
#
#------------------------------------------------------------------


#---------- Script ----------------
alias: New Scheduled Action Event
description: |
  Use values from dashboard card to create a calendar event to trigger 
  automation.calendar_scheduled_conversation_actions.
sequence:
  - service: calendar.create_event
    data:
      summary: |
        {{ {'message': states('input_text.scheduled_action_message')} }}
      description: Scheduled Action Added via UI
      start_date_time: >-
        {{ (states('input_datetime.scheduled_action')
        |as_datetime).isoformat()[:19]}}
      end_date_time: >-
        {{ (states('input_datetime.scheduled_action') |as_datetime +
        timedelta(minutes=5)).isoformat()[:19] }}
    target:
      entity_id: calendar.home_assistant_events
  - delay: 2
  - alias: Clear input text so field is blank
    data:
      value: "{{''}}"
    target:
      entity_id: input_text.scheduled_action_message
    action: input_text.set_value
  - delay: 20 
  - action: homeassistant.reload_config_entry
    target:
      entity_id: calendar.home_assistant_events
    data: {}
mode: single


#---------- Automation ----------------
alias: Calendar - Scheduled Conversation Actions
description: |
  Use specifically formatted calendar event to schedule one-time home automation actions.
trigger:
  - platform: calendar
    event: start
    entity_id: calendar.home_assistant_events
    variables:
      summary_from: |
        {{ trigger.calendar_event.summary
        |replace("\'","\"")|string|from_json }}
condition:
  - condition: template
    value_template: |
      {{ trigger.calendar_event.description 
      == 'Scheduled Action Added via UI' }}
action:
  - service: conversation.process
    data:
      agent_id: homeassistant
      text: "{{ summary_from.message }}"
mode: parallel
max: 10


#---------- Dashboard Card Configuration ----------------
type: custom:stack-in-card
cards:
  - type: entities
    title: Schedule Assist Actions
    entities:
      - entity: input_datetime.scheduled_action
        name: Action Date & Time
      - entity: input_text.scheduled_action_message
        name: 'Action for Assist:'
        type: custom:text-input-row
  - show_name: true
    show_icon: true
    type: custom:button-card
    tap_action:
      action: call-service
      service: script.turn_on
      target:
        entity_id: script.new_scheduled_action_event
      data: {}
    entity: script.new_scheduled_action_event
    name: Schedule Action
    styles:
      card:
        - height: 100px