blueprint:
  name: Dynamic Medication Reminder via NFC
  description: >
    Tracks medication intake via NFC scan.
    - If no person is selected, the scanner is assumed to be the taker.
    - If a person is selected manually (e.g. a child without mobile),
      the medication schedule resets for them, but the fallback adult gets reminders.
    - Sends reminders again after a flexible interval (hours or days).
  domain: automation
  input:
    medication_name:
      name: Medication Name
      selector:
        text:
    nfc_tag_id:
      name: NFC Tag ID
      selector:
        text:
    reminder_delay:
      name: Reminder Interval
      selector:
        number:
          min: 1
          max: 168
    reminder_unit:
      name: Time Unit
      selector:
        select:
          options:
            - Hours
            - Days
    person_selector:
      name: input_select for manual person selection
      selector:
        entity:
          domain: input_select
    user_id_map:
      name: User ID → Person Map (JSON)
      description: Enter JSON like {"abc123": "dad", "def456": "mom"}
      selector:
        text:
    notify_fallback:
      name: Fallback Notify Service
      description: >
        Select who should be notified if the person has no mobile app (e.g. an adult).
      selector:
        entity:
          domain: notify

trigger:
  - platform: event
    event_type: tag_scanned
    event_data:
      tag_id: !input nfc_tag_id

variables:
  scanned_user_id: "{{ trigger.context.user_id }}"
  manual_person: "{{ states(inputs.person_selector) | lower }}"
  person: >
    {% set map = inputs.user_id_map | from_json(default={}) %}
    {% if scanned_user_id in map %}
      {{ map[scanned_user_id] | lower }}
    {% elif manual_person != "no selection" %}
      {{ manual_person }}
    {% else %}
      {{ integration_entities("person") | select('search', scanned_user_id) | list | first | default("unknown") }}
    {% endif %}
  delay_seconds: >
    {% if inputs.reminder_unit == 'Days' %}
      {{ (inputs.reminder_delay | int) * 86400 }}
    {% else %}
      {{ (inputs.reminder_delay | int) * 3600 }}
    {% endif %}
  datetime_entity: "input_datetime.medication_{{ person }}"
  notify_service: >
    {% set candidate = "notify.mobile_app_" ~ person %}
    {% if candidate in integration_entities("notify") %}
      {{ candidate }}
    {% else %}
      {{ inputs.notify_fallback }}
    {% endif %}

action:
  - service: input_datetime.set_datetime
    target:
      entity_id: "{{ datetime_entity }}"
    data:
      timestamp: "{{ now().timestamp() }}"

  - delay:
      seconds: "{{ delay_seconds }}"

  - service: "{{ notify_service }}"
    data:
      message: "{{ inputs.medication_name }} is due again for {{ person | title }}."

  - service: input_select.select_option
    target:
      entity_id: !input person_selector
    data:
      option: "No selection"