blueprint:
  name: Z2M - Aqara H2 Rotary Dimmer (KD-R01D) - Light Control (MQTT Direct)
  description: >
    Control your lights with the Aqara H2 EU Rotary Dimmer (connected via Zigbee2MQTT).

    **No Action Sensor Required!**
    Because modern Zigbee2MQTT setups no longer expose the legacy action sensor, this blueprint 
    listens directly to your device's MQTT topic. This has a major benefit: Home Assistant 
    won't discard identical, rapid rotation events (which typically happens with sensors due to state 
    deduplication), making the dimming feel incredibly smooth and responsive.

    **Setup:**
    Find your device's "Friendly name" in Z2M. Your MQTT topic is usually `zigbee2mqtt/` followed 
    by that name (e.g., `zigbee2mqtt/Bedroom dimmer`).
  domain: automation
  
  input:
    mqtt_topic:
      name: Device MQTT Topic
      description: >
        The base MQTT topic for your dimmer. Typically `zigbee2mqtt/` followed by the 
        Friendly Name of your device. (e.g. `zigbee2mqtt/Bedroom dimmer`)
      default: zigbee2mqtt/Bedroom dimmer
      selector:
        text: {}

    target_light:
      name: Target Light(s)
      description: The light, group, or area of lights to dim when rotating the knob.
      selector:
        target:
          entity:
            domain: light
            
    rotation_sensitivity:
      name: Rotation Sensitivity
      description: Multiplier for how much the brightness changes per degree of rotation. (Higher = faster dimming).
      default: 0.2
      selector:
        number:
          min: 0.05
          max: 2.0
          step: 0.05
          
    invert_rotation:
      name: Invert Rotation
      description: Enable this to reverse the dimming direction (e.g. right to dim down, left to brighten).
      default: false
      selector:
        boolean: {}
        
    dim_transition:
      name: Dimming Transition (seconds)
      description: Adds a transition time to smooth out the dimming steps as you turn the dial.
      default: 0.2
      selector:
        number:
          min: 0
          max: 5
          step: 0.1
          
    enable_default_single_press:
      name: Enable Default Single Press (Toggle)
      description: If enabled, a single press will automatically toggle the target light on/off. Disable this if you purely want to use the Custom Single Press action below instead.
      default: true
      selector:
        boolean: {}

    single_press_action:
      name: Custom Single Press Action
      description: Additional action(s) to run when the knob is pressed once.
      default: []
      selector:
        action: {}

    double_press_action:
      name: Double Press Action
      description: Action(s) to run when the knob is double pressed.
      default: []
      selector:
        action: {}

    hold_action:
      name: Long Press (Hold) Action
      description: Action(s) to run when the knob is held down.
      default: []
      selector:
        action: {}

    release_action:
      name: Release Action
      description: Action(s) to run when the knob is released after a long press.
      default: []
      selector:
        action: {}

# Parallel mode ensures fast rotational clicks don't interrupt each other
mode: parallel
max: 15

trigger:
  - platform: mqtt
    topic: !input mqtt_topic

action:
  - variables:
      # Safely extract payload variables directly from the MQTT JSON message
      payload: "{{ trigger.payload_json if trigger.payload_json is defined else {} }}"
      action_type: "{{ payload.action | default('') }}"
      raw_angle: "{{ payload.action_rotation_angle | default(0) | float(0) }}"
      
      # Pull inputs into variables so they can be safely evaluated in templates below
      sens: !input rotation_sensitivity
      invert: !input invert_rotation
      enable_toggle: !input enable_default_single_press
      
      # Calculate the final brightness step dynamically based on the rotation direction
      scaled_step: >
        {% set step = (raw_angle * sens) | int(0) %}
        {{ (step * -1) if invert else step }}

  - choose:
      # --- SINGLE PRESS ---
      - conditions:
          - condition: template
            value_template: "{{ action_type == 'single' or action_type == '' or action_type is none }}"
        sequence:
          - choose:
              - conditions:
                  - condition: template
                    value_template: "{{ enable_toggle }}"
                sequence:
                  - service: light.toggle
                    target: !input target_light
          - choose:
              - conditions: []
                sequence: !input single_press_action

      # --- DOUBLE PRESS ---
      - conditions:
          - condition: template
            value_template: "{{ action_type == 'double' }}"
        sequence:
          - choose:
              - conditions: []
                sequence: !input double_press_action

      # --- HOLD (LONG PRESS) ---
      - conditions:
          - condition: template
            value_template: "{{ action_type == 'hold' }}"
        sequence:
          - choose:
              - conditions: []
                sequence: !input hold_action

      # --- RELEASE (AFTER HOLD) ---
      - conditions:
          - condition: template
            value_template: "{{ action_type == 'release' }}"
        sequence:
          - choose:
              - conditions: []
                sequence: !input release_action

      # --- ROTATION DIMMING ---
      - conditions:
          - condition: template
            value_template: "{{ action_type == 'rotation' }}"
        sequence:
          # Only fire the turn_on service if there was a registrable angle change
          - condition: template
            value_template: "{{ scaled_step != 0 }}"
          - service: light.turn_on
            target: !input target_light
            data:
              brightness_step_pct: "{{ scaled_step }}"
              transition: !input dim_transition