Automation - Multiple device activation

Configuration
1

Hello,
i made a rest service to generate a TTS and play an audio on a remote server (a pizero with speaker)

I want to use it as a “notifier” for my home automation.
I configured my service like that and it is working good:

rest_command:
   playtts:
     url: http://192.168.1.5:8080/play
     method: POST
     payload: '{"data":{"text": "{{ text }}"}}'
     content_type:  'application/json; charset=utf-8'

and now i trigger the automation like that:

platform: device
type: turned_on
device_id: xxxxxxxxxxxxxxxxxxxx
entity_id: switch.luce_cucina
domain: switch

this is the action:

service: rest_command.playtts
data:
  text: Luce cucina turned on.

But i have multiple switches, shutters, curtains in my Home. Is there a way to configure a single automation and get its state inside the action?

I explain better with this example:

Configured devices for multiple activation:

platform: state 
    entity_id: &motion
      - switch.luce_cucina
      - switch.luce_sala
      - shutter.bedroom
      - ETC
    to: 'on'

(ref. https://community.home-assistant.io/t/using-a-single-automation-for-multiple-devices/227084/8)

Here in the action instead of manually writing the text:

service: rest_command.playtts
data:
  text: **trigger.device.get_activation**

where trigger.device.get_activation is something like… “Bathroom light turned on”
or “Bedroom shutter is now open”

Is that possible? Or I have to manually specify a single automation for every device i have in my House and manually write the text param in it?

I mean, something dynamic is more efficient, so every time I set up a new device at home I don’t have to worry about creating an activation for my notifier

Thanks