Android actionable notifications for Home Assistant + Ariela (https://play.google.com/store/apps/details?id=com.surodev.ariela). This code is based from https://github.com/Crewski/HANotify

1.1. Copy the fcm-android.py file into your /custom_components/notify/ folder (create it if you don't already have it) (use this step only if you are using Home Assistant version lower then 0.88)

1.2 If you are using Home Assistant version 0.88 or newer, Copy the fcm-android.py file into your /custom_components/fcm-android/ and rename the script to notify.py

2. In your configuration.yaml file, add the following to initialize the components:

notify:    
  - name: android
    platform: fcm-android

3. Reboot Home Assistant.
4. Enter Ariela application, go to settings and enable Firebase notifications

The android actionable notifications are set up the same as the html5 notifications. The following parameters can be sent:

title
target
message
data:
  actions
  color
  message_type
  tag
  dismiss
  image
  icon

Parameters for the data section of the notification. Everything here is optional.

In order to send a "regular" notification without actions, all you have to do is not include them in the call to the service, such as below.

- service: notify.android
  data:
    message: Anne has arrived home

This will send a simple push notification without any action buttons.

If you want to include some actions, something like this will work:

- service: notify.android
  data:
    message: Anne has arrived home
    data:
      actions:
        - action: open
          title: Open Home Assistant
        - action: open_door
          title: Open door 

This will have two buttons, one that says "Open Door" and one that says "Open Home Assistant". The action for each button ("open" or "open_door" in this example) will be returned in the callback.

The callback is pushed to the event bus. It can be accessed via fcm_android_notications.clicked. The "action" of the button that was pressed is included in the event_data. So an automation would looks something like:

- alias: TEST RESPONSE
  trigger:
  - event_data:
      action: open_door
    event_type: fcm_android_notifications.clicked
    platform: event
  condition: []
  action:
  - data:
      entity_id: light.front_door
    service: light.turn_on

When you clicked register on the app, it sends a firebase token back to Home Assistant. That token is saved into the fcm-android-registrations.conf file. This token is what is used to identify what devices to send the notification to. If the notifications involve actions, the token for the device is included in the callback. Before the callback is processed, the token is checked against the fcm-android-registrations.conf file for validity.