reminder_lovelace_UI.yaml

type: entities
title: Reminders
entities:
  - entity: input_text.reminder_description
    name: Message
  - entity: input_select.reminder_recipient
  - entity: input_datetime.reminder_tracker
    name: Reminder date and time
  - type: custom:config-template-card
    entities:
      - counter.reminder_number
      - input_text.reminder_description
    row:
      type: button
      entity: script.open_reminder
      name: ' '
      icon: ' '
      action_name: Submit
      tap_action:
        action: call-service
        service: script.open_reminder
        service_data:
          user: ${ user.name }
          reminder_number: ${ states['counter.reminder_number'].state }
          reminder_description: ${ states['input_text.reminder_description'].state }
  - type: divider
  - type: custom:auto-entities
    card:
      type: entities
      show_header_toggle: false
    show_empty: false
    filter:
      template: >

        {% set reminders =  expand(states.sensor) |
        selectattr('attributes.send_time','defined') |
        selectattr('attributes.status','eq', 'open') | selectattr('entity_id',
        'match', 'sensor.reminder_*') | map(attribute='entity_id') |list %}

        {% set reminders = reminders | map('regex_replace', '^.+_(\\d+)$',
        '\\1') | map('int') | sort | map('string') | map('regex_replace',
        '^(\\d+)$', 'sensor.reminder_\\1') | list %}

        [ {% for reminder in (reminders | reverse) %}
          {
            "type": "custom:config-template-card",
            "entities": "[{{ reminder }}]",
            "row": {
              "type": "custom:template-entity-row",
              "entity": "{{ reminder }}",
              "name": "{{ state_attr(reminder, 'description') }}",
              "active": {{ is_state_attr(reminder,'attributes.status','open') }},
              "icon": "{{ "mdi:alert-circle-outline" if is_state_attr(reminder,'attributes.status','open') else "mdi:close-circle-outline" }}",
              "state": "{{ state_attr(reminder, 'user') }}",
              "secondary": "{{ '#' + state_attr(reminder, 'number') + ' - ' }} Will send on {{
                                float(state_attr(reminder, 'send_time') | as_timestamp) |
                                timestamp_custom('%m/%d/%y at %-0I:%M %p') }}",
              "hold_action": 
                                  {
                                    "action": "call-service",
                                    "service": "script.close_reminder",
                                    "service_data": {
                                      "reminder_number": {{ state_attr(reminder, "number") }},
                                      "user": "${ user.name }",
                                    },
                                    "confirmation": {
                                      "text": "Dismiss reminder #{{ state_attr(reminder, 'number') }}?",
                                    }
                                  }
            }
          },
        {% endfor %} ]

reminder_mqtt.yaml

## Requires MQTT to be configured prior to use
## UI requires custom cards: auto-entities, config-template-card, template-entity-row
automation:
- alias: Reminder - Send next reminder
  id: 'Send next reminder'
  description: ""
  trigger:
    - platform: time
      at: sensor.next_reminder
  condition: []
  action:
    - repeat:
        while:
          - condition: template
            value_template: "{{ states('sensor.next_reminder') | as_datetime < now()}}"
        sequence:
          - service: |
              {{ 'notify.' + state_attr('sensor.next_reminder','recipient') }}
            data:
              title: Reminder
              message: "{{ state_attr('sensor.next_reminder', 'description') }}"
              data:
                ttl: 0
                priority: high
          - service: script.turn_on
            data:
              variables:
                reminder_number: "{{ state_attr('sensor.next_reminder', 'number') }}"
                user: "{{ state_attr('sensor.next_reminder', 'user') }}"
            target:
              entity_id: script.close_reminder
          - wait_for_trigger:
              - platform: state
                entity_id:
                  - sensor.next_reminder
                attribute: number
            timeout:
              hours: 0
              minutes: 0
              seconds: 10
              milliseconds: 0
            continue_on_timeout: false
  mode: single

counter:
  reminder_number:
    name: Reminder Number
    initial: 1
    minimum: 1
    step: 1
    icon: mdi:ticket-confirmation

input_select:
  filter_reminders:
    name: Filter reminders
    options:
      - All
      - Open
      - Closed
    initial: Open
    icon: mdi:filter
  reminder_recipient:
    name: Reminder recipient
    options:
      - dan
      - erin
      - dan_erin
      - hayley
      - persistent_notification
    icon: mdi:filter

input_text:
  reminder_description:
    name: Reminder description
    initial: ""
    icon: mdi:message-alert

input_datetime:
  reminder_tracker:
    name: Reminder tracker set time
    has_date: true
    has_time: true

script:
  next_reminder:
    alias: Find next reminder
    description: Set the next reminder so the automation can send it
    variables:
      reminder_list: "{{ expand(states.sensor) | selectattr('attributes.send_time','defined') | selectattr('attributes.status','eq','open') | selectattr('entity_id', 'match',
        'sensor.reminder_*') | map(attribute='entity_id') |list }}"
      sorted_reminder_list: "{{ expand(reminder_list) | sort(attribute='state', reverse=false) | map(attribute='entity_id')  |list }}"
      reminder: '{{ sorted_reminder_list[0] }}'
    sequence:
      - condition: template
        value_template: "{{ sorted_reminder_list | length > 0 }}"
      - alias: Set next reminder
        service: mqtt.publish
        data_template:
          topic: "reminder_tracker/next_reminder"
          retain: true
          payload: >-
            {
              "send_time": "{{ state_attr(reminder, 'send_time') }}",
              "status": "open",
              "description": "{{ state_attr(reminder, 'description') }}",
              "time": "{{ utcnow() | as_local }}",
              "number": "{{ state_attr(reminder, 'number') }}",
              "user": "{{ state_attr(reminder, 'user') }}",
              "recipient": "{{ state_attr(reminder, 'recipient') }}"
            }
      - alias: Create sensor for next reminder
        service: mqtt.publish
        data_template:
          topic: "homeassistant/sensor/reminder_tracker/next_reminder/config"
          retain: true
          payload: >-
            {
              "name": "next reminder",
              "unique_id": "next_reminder",
              "state_topic": "reminder_tracker/next_reminder",
              "json_attributes_topic": "reminder_tracker/next_reminder",
              "value_template": "{{ '{{ ' + 'value_json.send_time' + ' }}' }}",
              "icon": "mdi:bug",
              "device": {
                "identifiers": ["reminder_tracker"], "name": "reminder Tracker"
              },
              "device_class": "timestamp"
            }

  close_reminder:
    alias: Close reminder
    description: Close an existing reminder.
    icon: mdi:close-circle-outline
    fields:
      reminder_number:
        name: reminder Number
        description: The reminder number to close
        example: 42
        selector:
          text:
      user:
        name: User
        description: The user that closed this reminder
        example: Arthur Dent
        default: ""
        selector:
          text:
    variables:
      reminder_num: "{{ int(reminder_number) }}"
      reminder: "sensor.reminder_{{ reminder_num }}"
      time: "{{ utcnow() }}"
    sequence:
      - alias: Close reminder
        service: mqtt.publish
        data_template:
          topic: "reminder_tracker/{{ reminder_num }}"
          retain: true
          payload: >-
            {
              "send_time": "{{ state_attr(reminder, 'send_time') }}",
              "status": "closed",
              "description": "{{ state_attr(reminder, 'description') }}",
              "time": "{{ as_datetime(time) | as_local }}",
              "number": "{{ reminder_num }}",
              "user": "{{ user }}",
              "recipient": "{{ state_attr(reminder, 'recipient') }}"
            }
      - delay:
          hours: 0
          minutes: 0
          seconds: 1
          milliseconds: 0
      - service: script.next_reminder

  open_reminder:
    alias: Open reminder
    description: Open a new reminder.
    icon: mdi:alert-circle-outline
    fields:
      reminder_number:
        name: reminder Number
        description: The reminder number to open
        example: 42
        default: ""
        selector:
          text:
      reminder_description:
        name: reminder Description
        description: Short description of the reminder
        example: Something's broken!
        default: ""
        selector:
          text:
      user:
        name: User
        description: The user that opened this reminder
        example: Arthur Dent
        default: ""
        selector:
          text:
    variables:
      reminder_num: "{{ reminder_number }}"
      reminder_desc: "{{ reminder_description }}"
      time: "{{ utcnow() }}"
    sequence:
      - alias: Skip opening empty reminders
        condition: template
        value_template: "{{ reminder_desc != '' }}"
      - alias: Open reminder
        service: mqtt.publish
        data_template:
          topic: "reminder_tracker/{{ reminder_num }}"
          retain: true
          payload: >-
            {
              "send_time": "{{ states('input_datetime.reminder_tracker')| as_datetime | as_local }}",
              "status": "open",
              "description": "{{ reminder_desc }}",
              "time": "{{ as_datetime(time) | as_local }}",
              "number": "{{ reminder_num }}",
              "user": "{{ user }}",
              "recipient": "{{ states('input_select.reminder_recipient') }}"
            }
      - alias: Create sensor for reminder
        service: mqtt.publish
        data_template:
          topic: "homeassistant/sensor/reminder_tracker/{{ reminder_num }}/config"
          retain: true
          payload: >-
            {
              "name": "reminder {{ reminder_num }}",
              "unique_id": "reminder_{{ time | as_timestamp }}",
              "state_topic": "reminder_tracker/{{ reminder_num }}",
              "json_attributes_topic": "reminder_tracker/{{ reminder_num }}",
              "value_template": "{{ '{{ ' + 'value_json.send_time' + ' }}' }}",
              "icon": "mdi:bug",
              "device": {
                "identifiers": ["reminder_tracker"], "name": "reminder Tracker"
              },
              "device_class": "timestamp"
            }
      - alias: Increment counter
        service: counter.increment
        target:
          entity_id: counter.reminder_number
      - alias: Reset description
        service: input_text.set_value
        target:
          entity_id: input_text.reminder_description
        data:
          value: ""
      - delay:
          hours: 0
          minutes: 0
          seconds: 1
          milliseconds: 0
      - service: script.next_reminder
mqtt:
  sensor:
    - state_topic: "reminder_tracker/#"
      name: reminder_tracker