blueprint:
  name: 💧 DWC Plant Tracker
  description: >
    Track plants in Deep Water Culture (DWC) or soil setups.
    Notifies you to change or add water every 7 days.
  domain: automation
  input:
    plant_name:
      name: Plant Name
      description: Friendly name of your plant (e.g. "Lettuce 1").
      default: "My Plant"
    last_watered_helper:
      name: Last Watered Helper
      description: >
        Select the Date/Time helper for when this plant was last watered.
      selector:
        entity:
          domain: input_datetime
    notification_target:
      name: Notification Target
      description: >
        Choose how to receive reminders (e.g. mobile app, persistent_notification, etc.)
      selector:
        target:

# Trigger every day at midnight to check age
trigger:
  - platform: time
    at: "00:00:00"

variables:
  plant_name: !input plant_name
  last_watered_entity: !input last_watered_helper

# Conditions check if plant hasn't been watered in 7+ days
condition:
  - condition: template
    value_template: >
      {% set last = states(last_watered_entity) %}
      {% if last not in ['unknown', 'unavailable', None] %}
        {{ ((as_timestamp(now()) - as_timestamp(last)) / 86400) | int >= 7 }}
      {% else %}
        false
      {% endif %}

action:
  - variables:
      days_since: >
        {% set last = states(last_watered_entity) %}
        {% if last not in ['unknown','unavailable',None] %}
          {{ ((as_timestamp(now()) - as_timestamp(last)) / 86400) | int }}
        {% else %} 0 {% endif %}

  - service: notify
    target: !input notification_target
    data:
      title: "💧 DWC Water Change Reminder"
      message: "{{ plant_name }} needs a water change! It’s been {{ days_since }} days since last watering."

mode: single