Flutter Agent Pupau

A Flutter plugin that integrates Pupau AI agents in your application.

Features

• AI-Powered Chat Interface - Full-featured chat UI with streaming responses
• Multiple Widget Modes - Full screen, sized container, or floating overlay
• Flexible Authentication - API key or bearer token authentication
• Event Streaming - Real-time events for conversation lifecycle
• Multi-language Support - Built-in support for 14 languages
• Programmatic Control - Open, reset, and load conversations via code

Documentation

For full documentation on Pupau and more information on this plugin, visit Pupau AI Docs

Installation

Add the package name and version in your package's pubspec.yaml file:

dependencies:
  flutter_agent_pupau: ^1.0.1

Then run:

flutter pub get

Usage

1. Import the plugin

import 'package:flutter_agent_pupau/flutter_agent_pupau.dart';

2. Configure PupauConfig

Create a PupauConfig using one of two authentication methods:

Option A: API Key Authentication

final config = PupauConfig.createWithApiKey(
  apiKey: 'your-api-key',
  // Optional parameters
  conversationId: 'existing-conversation-id',  // Load specific conversation
  isAnonymous: false,                          // Anonymous chat mode
  language: 'en',                              // UI language (en, es, fr, de, etc.)
  googleMapsApiKey: 'your-maps-key',           // For location features
  hideInputBox: false,                         // Hide the input field
  widgetMode: WidgetMode.full,                 // Display mode
  showNerdStats: false,                        // Show token/credit stats
  conversationStarters: [                      // Predefined starter messages
    'Tell me about your features',
    'How can you help me?',
  ],
  customProperties: {                          // Custom metadata
    'userId': '123',
    'source': 'mobile_app',
  },
);

Option B: Bearer Token Authentication

Requires explicit assistant ID.

final config = PupauConfig.createWithToken(
  bearerToken: 'your-bearer-token',
  assistantId: 'your-assistant-id',
  isMarketplace: false,                        // Set to true if it's a Pupau marketplace agent
  // ... same optional parameters as above
);

Widget Avatar

The PupauAgentAvatar widget is the main UI component that displays an avatar and handles chat interactions. It supports three display modes:

Full Screen Mode (Default)

On tap it navigates to a full page that displays the chat.

PupauAgentAvatar(
  config: PupauConfig.createWithApiKey(
    apiKey: 'your-api-key',
    widgetMode: WidgetMode.full,
  ),
)

Sized Mode

The avatar expands in-place to a specified width and height.

PupauAgentAvatar(
  config: PupauConfig.createWithApiKey(
    apiKey: 'your-api-key',
    widgetMode: WidgetMode.sized,
    sizedConfig: SizedConfig(
      width: 400,
      height: 600,
      initiallyExpanded: false, // Start collapsed
    ),
  ),
)

Initially Expanded Chat

If you want the chat to be already expanded when the widget first loads, use the sized mode with initiallyExpanded: true. You can also specify to not show the close button, so that the chat will always stay open.

PupauAgentAvatar(
  config: PupauConfig.createWithApiKey(
    apiKey: 'your-api-key',
    widgetMode: WidgetMode.sized,
    sizedConfig: SizedConfig(
      width: 400,
      height: 600,
      initiallyExpanded: true, //Chat starts expanded!
      hasCloseButton: false //Hide close button so that expanded chat cannot be closed
    ),
  ),
)

Floating Overlay Mode

The chat appears as a floating overlay anchored to the avatar.

PupauAgentAvatar(
  config: PupauConfig.createWithApiKey(
    apiKey: 'your-api-key',
    widgetMode: WidgetMode.floating,
    floatingConfig: FloatingConfig(
      width: 400,
      height: 600,
      anchor: FloatingAnchor.bottomRight, // bottomRight, bottomLeft, topRight, topLeft
    ),
  ),
)

Programmatic Control with PupauChatUtils

Control the chat programmatically from anywhere in your app:

Open Chat from Code

// Open chat with a button press
ElevatedButton(
  onPressed: () {
    PupauChatUtils.openChat(
      context,
      PupauConfig.createWithApiKey(apiKey: 'your-api-key'),
    );
  },
  child: Text('Open Chat'),
)

Reset Current Chat

// Clear the current conversation and start fresh
await PupauChatUtils.resetChat();

Load Specific Conversation

// Load a conversation by ID
await PupauChatUtils.loadConversation('conversation-id');

Event Streaming with PupauEventService

Listen to real-time events from the chat interface:

Basic Event Listening

import 'package:flutter_agent_pupau/flutter_agent_pupau.dart';

// Listen to all chat events
PupauEventService.pupauStream.listen((event) {
  print('Event Type: ${event.type}');
  print('Event Payload: ${event.payload}');
  
  switch (event.type) {
    case UpdateConversationType.newConversation:
      print('New conversation created: ${event.payload}');
      break;
    case UpdateConversationType.messageSent:
      print('Message sent: ${event.payload}');
      break;
    case UpdateConversationType.messageReceived:
      print('Message received: ${event.payload}');
      break;
    case UpdateConversationType.conversationChanged:
      print('Conversation changed to: ${event.payload}');
      break;
    case UpdateConversationType.error:
      print('Error occurred: ${event.payload}');
      break;
    // ... handle other events
  }
});

Event Types

Event Type	Payload	Description
componentBootStatus	BootState	Plugin initialization status (off, pending, ok, error)
newConversation	String (conversationId)	New conversation created
resetConversation	null	Conversation was reset
conversationChanged	String (conversationId)	Active conversation changed
conversationTitleGenerated	String (title)	Conversation title generated
firstMessageComplete	null	First message in conversation completed
messageSent	Message	User sent a message
messageReceived	Message	AI response received
stopMessage	null	Message streaming stopped
deleteConversation	String (conversationId)	Conversation deleted
windowClose	null	Chat window closed
historyToggle	bool	Conversation history toggled
noCredit	null	No credits available
error	String (error message)	General error occurred
authError	String (error message)	Authentication error
tokensPerSecond	double	Streaming performance metric
timeToComplete	int (milliseconds)	Time to complete response
timeToFirstToken	int (milliseconds)	Time to first token received

Supported Languages

The plugin supports the following language codes for the language parameter:

• en - English (default)
• de - German
• es - Spanish
• fr - French
• hi - Hindi
• it - Italian
• ko - Korean
• nl - Dutch
• pl - Polish
• pt - Portuguese
• sq - Albanian
• sv - Swedish
• tr - Turkish
• zh - Chinese

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.