hass-blueprints/blueprints/automation/motion-light.yaml

blueprint:
  name: Smart Motion Light with Optional Lux Trigger and Time-Based Dimming
  description: Turns on a light when motion is detected or when lux drops below a threshold (if sensor is defined), dims based on time, and turns off when no motion.
  domain: automation
  input:
    motion_entity:
      name: Motion Sensor
      selector:
        entity:
          filter:
            - domain: binary_sensor
              device_class: motion
            - domain: binary_sensor
              device_class: occupancy
    light_target:
      name: Light
      selector:
        target:
          entity:
            domain: light
    lux_entity:
      name: Lux Sensor (optional)
      default: null
      selector:
        entity:
          domain: sensor
          device_class: illuminance
    lux_threshold:
      name: Lux Threshold
      default: 50
      selector:
        number:
          min: 0
          max: 1000
          unit_of_measurement: lx
    no_motion_wait:
      name: Wait Time After Motion Stops
      default: 120
      selector:
        number:
          min: 0
          max: 3600
          unit_of_measurement: seconds

mode: restart
max_exceeded: silent

trigger:
  # Motion trigger
  - platform: state
    entity_id: !input motion_entity
    from: "off"
    to: "on"
    
  # Optional lux trigger
  - platform: template
    value_template: >
      {% if lux_entity %}
        {{ states(lux_entity) | float(0) < lux_threshold and
           (states(motion_entity) == 'on' or
            (as_timestamp(now()) - as_timestamp(states(motion_entity))) < 300) }}
      {% else %}
        false
      {% endif %}

condition: []

action:
  - alias: "Turn on the light with calculated brightness"
    service: light.turn_on
    target: !input.light_target
    data:
      brightness: "{{ brightness }}"
  - alias: "Wait until motion stops"
    wait_for_trigger:
      - platform: state
        entity_id: !input.motion_entity
        from: "on"
        to: "off"
  - alias: "Wait the configured delay"
    delay: !input.no_motion_wait
  - alias: "Turn off the light"
    service: light.turn_off
    target: !input.light_target