Chatterbox is a simple framework to build multi level Telegram Bot dialog flows. It is build around televerse library.

Features

Allows to process different kind of messages from user and reply to them within the given context

Getting started

Can be used with both webhook and polling.

Usage

Webhook with Cloud Functions

@CloudFunction()
Future<Response> function(Map<String, dynamic> updateJson) async {
  try {
    final flows = <Flow>[
      //todo
    ];

    Chatterbox(Config.botToken, flows, StoreProxy()).invokeFromWebhook(updateJson);
    return Response.ok(
      null,
      headers: {'Content-Type': 'application/json'},
    );
  } catch (error) {
    return Response.badRequest();
  }
}

Coding dialog flows

Creating Flows

Reacting to user input

[ReactionResponse] is a simple reaction that allows to respond with a test to user input

ReactionResponse(
  /// Required text message to reply to user
  text: 'What is your favorite number?',
  /// Optional buttons
  buttons: [
    InlineButton(
      /// Button text
      title: 'Seventy three',
      /// Uri of a step to be invoked when this button is pressed
      nextStepUri: NextStep.toStepUri().appendArgs('73')
    ),
  ],
);

It can also contain buttons

Setup Google Cloud Run

1. Install gcloud console utility
2. gcloud init
3. Create a project and give it a unique id, alternatively you can create a project at https://console.cloud.google.com/
4. Go to Google Cloud run and do following
5. Enable Identity and Access Management (IAM) API https://console.cloud.google.com/apis/library/iam.googleapis.com?project=getrid-0
6. Trigger a build https://console.cloud.google.com/cloud-build/triggers?project=getrid-0
7. Add Secrets https://console.cloud.google.com/marketplace/product/google/secretmanager.googleapis.com?returnUrl=%2Fsecurity%2Fsecret-manager%3Fproject%3Dgetrid-0&project=getrid-0