Ping host down → persistent mobile notification (auto-clears)

ping_notification.yaml

blueprint:
  name: Ping host down → persistent mobile notification (auto-clear)
  description: |
    Sends a sticky banner to the selected mobile-app device when any
    Ping (ICMP) binary_sensor goes OFFLINE, and clears that banner when the
    sensor comes back ONLINE. Optionally sends a “back online” push.
  domain: automation

  input:
    ping_sensors:
      name: Ping sensors to monitor
      selector:
        entity:
          domain: binary_sensor
          multiple: true
    notify_device:
      name: Mobile device
      selector:
        device:
          integration: mobile_app
    title:
      name: Notification title
      default: Host unreachable
    msg_down:
      name: Message when DOWN
      default: Host {{ trigger.to_state.name }} is unreachable.
    msg_up:
      name: Message when UP (leave blank to suppress)
      default: ''

mode: parallel

trigger:
  - platform: state
    entity_id: !input ping_sensors
    to: ['off', 'on']

action:
  # Expose the "up" message so templates can read it
  - variables:
      up_msg: !input msg_up

  - choose:
      # ── HOST WENT DOWN ────────────────────────────────
      - conditions:
          - condition: template
            value_template: "{{ trigger.to_state.state == 'off' }}"
        sequence:
          - device_id: !input notify_device
            domain: mobile_app
            type: notify
            title: !input title
            message: !input msg_down
            data:
              tag: "{{ trigger.entity_id }}"
              persistent: true
              sticky: true

      # ── HOST BACK UP ─────────────────────────────────
      - conditions:
          - condition: template
            value_template: "{{ trigger.to_state.state == 'on' }}"
        sequence:
          # 1) Clear the sticky banner
          - device_id: !input notify_device
            domain: mobile_app
            type: notify
            message: clear_notification
            data:
              tag: "{{ trigger.entity_id }}"

          # 2) Optional “back online” push
          - choose:
              - conditions:
                  - condition: template
                    value_template: "{{ up_msg | trim != '' }}"
                sequence:
                  - device_id: !input notify_device
                    domain: mobile_app
                    type: notify
                    title: !input title
                    message: "{{ up_msg }}"