Telegram integration with rasa

Rasa Open Source
2

Going to post the solution i found:

Implemented a custom input channel in a file called custom_telegram.py the same folder that the credentials.yml is, with the content:

from rasa.core.channels import TelegramInput
from typing import Text

class TelegramInputChannel(TelegramInput):
    def get_metadata(self, request):
        metadata=request.json
        return metadata

Then, edited my credentials.yml using:

custom_telegram.TelegramInputChannel:
  access_token: "token provided by father bot"
  verify: "bot_username"
  webhook_url: "https://address/webhooks/telegram/webhook"

After that, it was possible to access in actions file:

    telegram_username = tracker.latest_message["metadata"]["from"]["username"] #user that sent the message
    telegram_chat_type = tracker.latest_message["metadata"]["chat"]["type"]
    if telegram_chat_type == 'group':
        is_group = True
    return [
                SlotSet("is_in_telegram_group", is_group),
            ]
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