home-assistant/packages/occupancy.yaml

automation:
  - alias: Turn off lights when unoccupied
    action:
      - service: light.turn_off
        data:
          entity_id: group.all_lights
    trigger:
      - platform: state
        entity_id: binary_sensor.occupied
        to: 'off'
  - alias: Set occupied
    action:
      - service: input_boolean.turn_on
        data:
          entity_id: input_boolean.occupied
    trigger:
      - platform: state
        entity_id: binary_sensor.activity
        to: 'on'
    condition:
      - condition: state
        entity_id: group.phones
        state: 'not_home'
  - alias: Unset occupied
    action:
      - service: input_boolean.turn_off
        data:
          entity_id: input_boolean.occupied
    trigger:
      - platform: state
        entity_id: binary_sensor.activity
        to: 'off'
        for:
          minutes: 10
      - platform: state
        entity_id: group.phones
        to: 'not_home'
        for:
          minutes: 10
    condition:
      - condition: state
        entity_id: group.phones
        state: 'not_home'
      - condition: state
        entity_id: binary_sensor.activity
        state: 'off'
  - alias: Welcome home
    action:
      - delay: '00:00:05'
      - service: script.sonos_tts
        data_template:
          message: >-
            Welcome home,
            {{ states
             | selectattr("entity_id", "in",
                          states.group.phones.attributes.entity_id)
             | selectattr('state', 'eq', 'home')
             | map(attribute='attributes.friendly_name')
             | join(' and ')}}!
    trigger:
      - entity_id: binary_sensor.occupied
        platform: state
        to: 'on'    

input_boolean:
  occupied:
    name: House is occupied
    icon: mdi:home

binary_sensor:
  - platform: template
    sensors:
      occupied:
        friendly_name: Somebody is home
        device_class: occupancy
        value_template: >-
          {{ is_state('group.phones', 'home')
             or is_state('input_boolean.occupied', 'on')
          }}
      activity:
        friendly_name: House in use
        device_class: occupancy
        value_template: >-
          {{ is_state('group.all_lights', 'on')
             or is_state('media_player.den', 'playing')
          }}

group:
  Occupancy:
    view: yes
    icon: mdi:account-group
    entities:
      - binary_sensor.occupied
      - binary_sensor.activity
      - group.phones
      - group.occupancy_automations
      - group.occupancy_overrides
  occupancy_automations:
    name: Automations
    entities:
      - automation.turn_off_lights_when_unoccupied
      - automation.set_occupied
      - automation.unset_occupied
      - automation.welcome_home
  occupancy_overrides:
    name: Overrides
    entities:
      - input_boolean.occupied