todo_overdue_notifications.yaml

blueprint:
  name: ToDo overdue reminders
  description: Sends notifications with items that are overdue
  author: Dany Khalife
  domain: automation
  input:
    lists:
      description: The ToDo lists to scan
      selector:
        entity:
          domain: todo
          multiple: true
    notification_time:
      description: The time at which the notification is sent
      selector:
        time:
      default: 
        hours: 8
        minutes: 0
        seconds: 0
    notify:
      description: The notification service to use for notifications.
      selector:
        device:
          integration: mobile_app

mode: single
trigger:
  - platform: time
    at: !input notification_time
condition: []
action:
  - metadata: {}
    data:
      status: needs_action
    target:
      entity_id: !input lists
    response_variable: tasks
    action: todo.get_items
  - variables:
      tasks_overdue: >
        {%- set today = now().strftime('%Y-%m-%d')-%}
        {%- set ns = namespace(result = []) -%}

        {%- for listName in tasks -%}
          {% set tasks_list = tasks[listName]['items'] %}

          {%- if tasks_list is iterable -%}
            {%- for task in tasks_list -%}
              {%- if 'due' in task -%}
                {%- if task['due'].split('T')[0] < today -%}
                  {%- set ns.result = ns.result + [task['summary']] -%}
                {%- endif -%}
              {%- endif -%}
            {%- endfor -%}
          {%- endif -%}
        {%- endfor -%}

        {%- if ns.result is iterable -%}
          {%- for item in ns.result %}  
        - {{ item }}
          {%- endfor -%}
        {%- endif -%}
  - condition: template
    value_template: "{{ tasks_overdue != '' }}"
  - device_id: !input notify
    domain: mobile_app
    type: notify
    title: Overdue tasks
    message: "{{ tasks_overdue }}"