blueprint:
  name: Light Sunrise
  author: steriku
  description: >
    Campanion Script to the parabolic alarm automation blueprint.
  source_url: https://github.com/steku/ha_cercadian_alarm/blob/main/blueprint_parabolic_alarm_script.yaml
  domain: script
  homeassistant:
    min_version: 2024.9.0
fields:
  target_kelvin:
    description: Coldest Kelvin value. This is the end value - most white
    selector:
      color_temp:
        unit: kelvin
    default: 6500
    name: Coldest Kelvin
  start_kelvin:
    description: >-
      This is the start value. If the light is on the current value from the
      state of the light will be used and this will be ignored.
    selector:
      color_temp:
        unit: kelvin
        min: 2500
        max: 6500
    default: 2500
    name: Warmest Kelvin
  max_brightness_pct:
    description: Maximum brightness in percent to reach by the end of the script
    selector:
      number:
        min: 1
        max: 100
    default: 80
    name: Max brightness
  alarm_length:
    description: >-
      This is the start to finish time. Take this into account when setting up
      the automation this script is called by.
    selector:
      number:
        min: 1
        max: 60
    default: 10
    name: Alarm Length
  steps_per_minute:
    description: How many steps per minute
    selector:
      number:
        min: 1
        max: 12
    default: 12
    name: Steps Per minute
  target_light:
    description: A single light or group
    selector:
      entity:
        filter:
          domain: light
    name: Target Light
  light_timeout:
    description: >-
      Minutes to delay after Max Brightness has been reached to turn the light
      back off. Value of 0 disables the timeout
    selector:
      number:
        min: 0
        max: 60
    default: 5
    name: Light Timeout
variables:
  steps: "{{ alarm_length * steps_per_minute }}"
  min_brightness: |-
    {% if states(target_light) == 'off' %}
      3
    {% else %}
      {{ state_attr(target_light, 'brightness') }}
    {% endif %}
  max_brightness: "{{ max_brightness_pct * 2.55 }}"
  kelvin_step: "{{ (target_kelvin - start_kelvin) / steps }}"
  bright_step: "{{ (max_brightness - min_brightness) / steps }}"
  start_time: "{{ as_timestamp(now()) }}"
  individual_step: "{{ 60 / steps_per_minute }}"
sequence:
  - repeat:
      until:
        - condition: or
          conditions:
            - condition: template
              value_template: "{{ is_state(target_light, 'off') }}"
            - condition: template
              value_template: "{{ state_attr(target_light, 'brightness') >= max_brightness }}"
            - condition: template
              value_template: >-
                {{ state_attr(target_light, 'color_temp_kelvin') >=
                target_kelvin }}
            - condition: template
              value_template: >-
                {{ (((as_timestamp(now()) - start_time) / individual_step) |
                round(0, "ceil")) > steps }}
      sequence:
        - variables:
            steps_to_now: |-
              {{ ((as_timestamp(now()) - start_time) / individual_step) |
                round(0, "ceil") }}
            brightness: >-
              {{ min_brightness + (bright_step * steps_to_now) | round(0,
              'ceil') }}
            kelvin: "{{ start_kelvin + (kelvin_step * steps_to_now) }}"
        - delay:
            seconds: "{{ individual_step }}"
        - if:
            - condition: template
              value_template: "{{ is_state(target_light, 'on') }}"
          then:
            - data:
                brightness: "{{ brightness }}"
                color_temp_kelvin: "{{ kelvin }}"
                transition: "{{ individual_step - 1 }}"
              target:
                entity_id: "{{ target_light }}"
              action: light.turn_on
  - if:
      - condition: and
        conditions:
          - condition: template
            value_template: "{{ light_timeout != 0 }}"
          - condition: template
            value_template: "{{ is_state(target_light, 'on') }}"
    then:
      - delay:
          minutes: "{{ light_timeout }}"
      - data: {}
        target:
          entity_id: "{{ target_light }}"
        action: light.turn_off
mode: parallel