Flexlink App

UI Enhancements

Dark Mode Support

• System preference detection
• Manual toggle via the theme button in the header
• Persistent theme preference using localStorage

Improved UI Animations

• Smooth transitions between states
• Enhanced loading animations
• Micro-interactions (hover effects, scale transitions)
• Page transitions with fade and slide effects

Installation of Additional Dependencies

To use all the new UI features, install the following dependency:

npm install framer-motion

---

Flexlink Backend (FastAPI)

This directory will contain the Python FastAPI backend for Flexlink, designed for Nigerian users. It will support authentication, account management, payments, and more, with a database hosted in Nigeria.

Setup Steps

1. Create a Python virtual environment:

   python -m venv venv
   source venv/bin/activate  # On Windows: venv\Scripts\activate

2. Install dependencies:

   pip install -r requirements.txt

3. Run the server:

   uvicorn main:app --reload

---

Run and deploy your AI Studio app

This contains everything you need to run your app locally.

Run Locally

Prerequisites: Node.js

1. Install dependencies: npm install
2. Set the GEMINI_API_KEY in .env.local to your Gemini API key
3. Run the app: npm run dev

---

Great! Here’s how to integrate the Mono Connect Widget into your Flutter frontend so users can securely link their Nigerian bank accounts.

---

Step 1: Understand the Mono Connect Widget

• The Mono Connect Widget is a web-based interface that lets users securely link their bank accounts.
• In Flutter, you’ll typically use a WebView to display the widget, then handle the redirect/callback to get the authorization code.

---

Step 2: Add Dependencies

Add the following to your pubspec.yaml:

dependencies:
  webview_flutter: ^4.2.2
  url_launcher: ^6.2.5

Run:

flutter pub get

---

Step 3: Create the Mono Connect WebView Screen

Here’s a sample Flutter widget to launch the Mono Connect Widget and handle the callback:

import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';

class MonoConnectScreen extends StatefulWidget {
  final String linkUrl; // The URL from your backend /mono/initiate-link

  const MonoConnectScreen({Key? key, required this.linkUrl}) : super(key: key);

  @override
  State<MonoConnectScreen> createState() => _MonoConnectScreenState();
}

class _MonoConnectScreenState extends State<MonoConnectScreen> {
  late final WebViewController _controller;

  @override
  void initState() {
    super.initState();
    _controller = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setNavigationDelegate(
        NavigationDelegate(
          onNavigationRequest: (request) {
            // Listen for the redirect/callback URL
            if (request.url.contains('your-backend.com/mono/callback')) {
              final uri = Uri.parse(request.url);
              final code = uri.queryParameters['code'];
              if (code != null) {
                // Send this code to your backend to complete the linking
                Navigator.pop(context, code);
              }
              return NavigationDecision.prevent;
            }
            return NavigationDecision.navigate;
          },
        ),
      )
      ..loadRequest(Uri.parse(widget.linkUrl));
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Link Your Bank Account')),
      body: WebViewWidget(controller: _controller),
    );
  }
}

---

Step 4: Usage Example

When the user taps “Link Bank Account”:

import 'package:http/http.dart' as http;
import 'dart:convert';

// Call your backend to get the Mono Connect URL
Future<void> startMonoLink(BuildContext context) async {
  final response = await http.get(Uri.parse('https://your-backend.com/mono/initiate-link'));
  final linkUrl = json.decode(response.body)['link_url'];

  // Open the Mono Connect screen
  final code = await Navigator.push(
    context,
    MaterialPageRoute(
      builder: (context) => MonoConnectScreen(linkUrl: linkUrl),
    ),
  );

  if (code != null) {
    // Send the code to your backend to complete the linking
    await http.get(Uri.parse('https://your-backend.com/mono/callback?code=$code'));
    // Show success message or refresh accounts
  }
}

---

Step 5: Security & UX Notes

• Never expose your Mono secret keys in the frontend. All sensitive operations must go through your backend.
• Handle errors and loading states in the WebView for a smooth user experience.
• After linking, fetch the user’s accounts from your backend and update the UI.

---

Summary

• Use a WebView to display the Mono Connect Widget.
• Get the link URL from your backend.
• Listen for the callback URL to capture the authorization code.
• Send the code to your backend to complete the linking and store the Mono account/token.

---

Would you like a more detailed Flutter integration (with error handling, loading, etc.), or guidance on how to update your app’s UI to show real accounts after linking?

Excellent! Here’s how to update your AI service and actions to use live data from Mono and support new billers (like airtime/data purchase):

---

1. Update AI Service to Use Live Data

What to Change

• Context for Gemini AI:
  Instead of sending mock accounts/transactions from constants.ts, fetch real data from your backend (which gets it from Mono).
• Action Execution:
  When the AI suggests an action (e.g., transfer, buy airtime), your app should call your backend, which performs the real operation via Mono or a biller API.

How to Do It

• Frontend:
  • When the user logs in or links a bank, fetch their accounts and transactions from your backend and pass this real data to the AI context.
• Backend:
  • Endpoints like /accounts, /transactions, /transfer should use Mono APIs for real data.

---

2. Add New Billers (Airtime/Data Purchase) to AI Actions

What to Add

• AI System Instructions:
  Add new actions for buy_airtime and buy_data (and any other billers you want).
• Action Registry:
  Add handlers for these new actions in your backend and frontend.

Example: Update AI System Instructions

In your geminiService.ts, update the system instruction string to include:

*   **Bill Payment Actions:**
    *   **buy_airtime:** For buying mobile airtime.
        *   **Parameters:** `{ "amount": number, "phoneNumber": string, "network": string, "fromAccountId": string }`
    *   **buy_data:** For buying mobile data bundles.
        *   **Parameters:** `{ "amount": number, "phoneNumber": string, "network": string, "fromAccountId": string, "bundle": string }`

Example: Add to Action Registry

In your action registry (e.g., actionRegistry.ts), add:

import { executeBuyAirtime, executeBuyData } from './paymentActions';

actionRegistry.set(AIAction.BuyAirtime, executeBuyAirtime);
actionRegistry.set(AIAction.BuyData, executeBuyData);

And implement executeBuyAirtime and executeBuyData to call your backend endpoints for airtime/data purchase.

---

3. Backend: Add Endpoints for Airtime/Data

• Add /buy-airtime and /buy-data endpoints to your FastAPI backend.
• These endpoints can use a Nigerian aggregator API (e.g., Paystack, Flutterwave, or direct telco APIs) or simulate the purchase for now.

---

4. Frontend: Pass Real Data to AI

• When calling the AI (Gemini), pass the real accounts and transactions fetched from your backend, not mock data.

---

5. Example: AI Action for Airtime

User says:

“Buy ₦500 airtime for 08031234567 on MTN from my GTBank account.”

AI returns:

{
  "action": "buy_airtime",
  "parameters": {
    "amount": 500,
    "phoneNumber": "08031234567",
    "network": "MTN",
    "fromAccountId": "gtb_account_id"
  },
  "summary": "Buying ₦500 MTN airtime for 08031234567 from your GTBank account."
}

Your app then calls the backend /buy-airtime endpoint with these parameters.

---

Would you like:

• Example code for the new AI actions and backend endpoints for airtime/data?
• Guidance on updating the frontend to pass real data to the AI?
• Or both?

Let me know your preference and I’ll provide the next steps and code!

Absolutely! Here’s a practical guide and sample code to help you convert each React component to a Flutter widget/screen, using best practices for navigation, state management, and backend API integration.

---

1. Component Mapping: React → Flutter

React (TSX) Component	Flutter Equivalent (Dart)
AccountList.tsx	AccountListScreen/AccountListWidget
AiChat.tsx	AiChatScreen/AiChatWidget
SettingsModal.tsx	SettingsScreen/SettingsDialog
...	...

---

2. Flutter Project Structure Example

/lib
  /screens
    account_list_screen.dart
    ai_chat_screen.dart
    settings_screen.dart
  /widgets
    account_card.dart
    chat_message.dart
    ...
  /models
    account.dart
    transaction.dart
    ...
  /services
    api_service.dart
  main.dart

---

3. Sample Conversion: AccountList.tsx → AccountListScreen.dart

React (TSX) Example

// AccountList.tsx
export default function AccountList({ accounts }) {
  return (
    <div>
      {accounts.map(acc => (
        <div key={acc.id}>{acc.name}: ₦{acc.balance}</div>
      ))}
    </div>
  );
}

Flutter Equivalent

// account_list_screen.dart
import 'package:flutter/material.dart';
import '../models/account.dart';
import '../services/api_service.dart';

class AccountListScreen extends StatefulWidget {
  @override
  _AccountListScreenState createState() => _AccountListScreenState();
}

class _AccountListScreenState extends State<AccountListScreen> {
  late Future<List<Account>> _accountsFuture;

  @override
  void initState() {
    super.initState();
    _accountsFuture = ApiService().fetchAccounts();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Accounts')),
      body: FutureBuilder<List<Account>>(
        future: _accountsFuture,
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.waiting) {
            return Center(child: CircularProgressIndicator());
          } else if (snapshot.hasError) {
            return Center(child: Text('Error: ${snapshot.error}'));
          } else if (!snapshot.hasData || snapshot.data!.isEmpty) {
            return Center(child: Text('No accounts found.'));
          }
          final accounts = snapshot.data!;
          return ListView.builder(
            itemCount: accounts.length,
            itemBuilder: (context, index) {
              final acc = accounts[index];
              return ListTile(
                title: Text(acc.name),
                subtitle: Text('₦${acc.balance.toStringAsFixed(2)}'),
              );
            },
          );
        },
      ),
    );
  }
}

---

4. API Service Example (http package)

// api_service.dart
import 'dart:convert';
import 'package:http/http.dart' as http;
import '../models/account.dart';

class ApiService {
  final String baseUrl = 'https://your-backend.com';

  Future<List<Account>> fetchAccounts() async {
    final response = await http.get(Uri.parse('$baseUrl/accounts'));
    if (response.statusCode == 200) {
      final List data = json.decode(response.body);
      return data.map((json) => Account.fromJson(json)).toList();
    } else {
      throw Exception('Failed to load accounts');
    }
  }
}

---

5. Model Example

// account.dart
class Account {
  final String id;
  final String name;
  final double balance;

  Account({required this.id, required this.name, required this.balance});

  factory Account.fromJson(Map<String, dynamic> json) {
    return Account(
      id: json['id'],
      name: json['name'],
      balance: (json['balance'] as num).toDouble(),
    );
  }
}

---

6. State Management

• For simple screens, use FutureBuilder or setState.
• For complex flows (e.g., chat, settings), use Provider, Riverpod, or Bloc for scalable state management.

---

7. Navigation Example

// main.dart
import 'package:flutter/material.dart';
import 'screens/account_list_screen.dart';
import 'screens/ai_chat_screen.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flexlink',
      home: AccountListScreen(),
      routes: {
        '/chat': (context) => AiChatScreen(),
        // Add other routes here
      },
    );
  }
}

---

8. Repeat for All Components

• AiChat.tsx → AiChatScreen.dart:
  Use a ListView for chat messages, a TextField for input, and call your backend /ai endpoint for responses.
• SettingsModal.tsx → SettingsScreen.dart:
  Use a Dialog or Scaffold with form fields, and update settings via API.

---

9. Best Practices

• All data comes from the backend. No hardcoded or mock data in Flutter.
• All sensitive logic is in the backend. Flutter only handles UI and API calls.
• Use secure storage (e.g., flutter_secure_storage) for tokens if needed.

---

10. Need a Specific Example?

Let me know which React component you want a full Flutter conversion for next (e.g., AiChat, Settings, etc.), and I’ll provide the code!

---

Summary:

• Convert each TSX to a Dart widget/screen.
• Use Flutter’s navigation and state management.
• Fetch all data from your backend via HTTP.
• UI state (loading, error, success) is managed in Flutter.

Ready for a specific screen or want a full sample for AiChat or another feature? Let me know!

Here’s a clear, actionable plan to move all sensitive logic and data to your FastAPI backend and structure it for a secure, production-ready Nigerian banking app:

---

1. What to Move to the Backend

All of these must be handled by your backend (never in Flutter):

• Account linking (Mono OAuth):
  Handle the OAuth flow, store Mono tokens, and manage user-bank connections.
• Fetching accounts/transactions:
  Use Mono APIs to fetch real data, return it to the frontend via secure endpoints.
• Initiating transfers/payments:
  All money movement (via Mono or biller APIs) must be initiated by the backend.
• Billers (airtime, data, electricity, etc.):
  Integrate with Nigerian biller APIs (e.g., Paystack, Flutterwave) for all bill payments.
• User authentication & session management:
  Use JWT for secure login, registration, and session handling.
• Knowledge base, AI context, and persistent user data:
  Store all user-specific data (aliases, preferences, chat history, etc.) in your database.

---

2. How to Structure the Backend

A. Authentication (JWT)

• All endpoints (except login/register) require a valid JWT.
• On login/register, issue a JWT token.
• Store user info and hashed passwords securely.

B. Database Models

• User: id, email, hashed_password, etc.
• MonoToken: user_id, mono_account_id, access_token, refresh_token, etc.
• KnowledgeBase: user_id, key, value (for AI context, aliases, etc.)
• (Optional) Transaction, Account, etc.: for caching or analytics.

C. Endpoints to Expose

Endpoint	Purpose	Auth Required?
/register	User registration	No
/login	User login (returns JWT)	No
/mono/initiate-link	Get Mono Connect URL	Yes
/mono/callback	Handle Mono OAuth callback	Yes
/accounts	Get user’s linked accounts (from Mono)	Yes
/transactions	Get transactions for an account (from Mono)	Yes
/transfer	Initiate a transfer/payment (via Mono)	Yes
/buy-airtime	Buy airtime (via biller API)	Yes
/buy-data	Buy data bundle (via biller API)	Yes
/buy-electricity	Pay electricity bill (via biller API)	Yes
/ai	AI chat endpoint (uses live data)	Yes
/knowledge-base	CRUD for user’s knowledge base	Yes

D. Example: Secure Endpoint with JWT

from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from jose import jwt, JWTError

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="login")

def get_current_user(token: str = Depends(oauth2_scheme)):
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        user_id: str = payload.get("sub")
        if user_id is None:
            raise credentials_exception
        # Fetch user from DB here
        return user
    except JWTError:
        raise HTTPException(status_code=401, detail="Invalid token")

---

3. Backend Flow Example

A. User logs in:

• Receives JWT.

B. User links a bank:

• Flutter opens Mono Connect (via backend /mono/initiate-link).
• On success, backend stores Mono token for user.

C. User views accounts/transactions:

• Flutter calls /accounts and /transactions with JWT.
• Backend fetches from Mono using stored token, returns data.

D. User initiates a transfer or bill payment:

• Flutter calls /transfer or /buy-airtime with JWT and details.
• Backend performs the action via Mono or biller API, returns result.

E. User chats with AI:

• Flutter sends message to /ai with JWT.
• Backend fetches live data, builds AI context, calls Gemini, returns response.

---

4. Security Best Practices

• Never expose API keys or tokens to the frontend.
• Encrypt sensitive data at rest (Mono tokens, user info).
• Validate all input and handle errors gracefully.
• Log and monitor for suspicious activity.

---

5. Next Steps

• Do you want sample FastAPI code for a specific endpoint (e.g., /accounts, /transfer, /buy-airtime)?
• Need a database schema example?
• Want a full authentication (JWT) setup?

Let me know your next priority and I’ll provide the code and guidance!

import os MONO_SECRET_KEY = os.getenv("MONO_SECRET_KEY")

Use only in backend requests, never send to frontend

from cryptography.fernet import Fernet

Generate and store this key securely

ENCRYPTION_KEY = os.getenv("ENCRYPTION_KEY") fernet = Fernet(ENCRYPTION_KEY)

Encrypt before saving

encrypted_token = fernet.encrypt(mono_token.encode())

Decrypt when needed

decrypted_token = fernet.decrypt(encrypted_token).decode()

from pydantic import BaseModel, Field, ValidationError

class TransferRequest(BaseModel): amount: float = Field(gt=0) to_account: str to_bank: str

@app.post("/transfer") def transfer(req: TransferRequest): try: # ... business logic ... return {"status": "success"} except Exception as e: # Log the error (see below) raise HTTPException(status_code=500, detail="An error occurred. Please try again.")

import logging

logging.basicConfig(filename='app.log', level=logging.INFO)

@app.post("/login") def login(...): # On success logging.info(f"User {user_id} logged in at {datetime.utcnow()}") # On failure logging.warning(f"Failed login attempt for {email} at {datetime.utcnow()}")

Great! Here’s a clear, actionable plan for migrating your React screens to Flutter and setting up robust state management. This will ensure your app is scalable, maintainable, and ready for production on both iOS and Android.

---

1. Screen-by-Screen Migration Plan

A. Identify Core Screens from React

• Home (dashboard/overview)
• Account List
• Account Details
• AI Chat
• Settings
• Modals (Link Account, OTP, etc.)

B. Flutter File Structure Example

/lib
  /screens
    home_screen.dart
    account_list_screen.dart
    account_detail_screen.dart
    chat_screen.dart
    settings_screen.dart
    link_account_modal.dart
    otp_modal.dart
  /widgets
    account_card.dart
    chat_bubble.dart
    action_button.dart
  /models
    account.dart
    transaction.dart
    chat_message.dart
  /services
    api_service.dart
    auth_service.dart
  /state
    app_state.dart
    account_provider.dart
    chat_provider.dart
  main.dart

---

2. State Management Setup (Provider Example)

A. Add Dependencies

In pubspec.yaml:

dependencies:
  provider: ^6.0.5
  http: ^0.14.0
  flutter_secure_storage: ^8.0.0
  # ...other packages

B. Create App State Providers

Example: account_provider.dart

import 'package:flutter/material.dart';
import '../models/account.dart';
import '../services/api_service.dart';

class AccountProvider with ChangeNotifier {
  List<Account> _accounts = [];
  bool _loading = false;
  String? _error;

  List<Account> get accounts => _accounts;
  bool get loading => _loading;
  String? get error => _error;

  Future<void> fetchAccounts() async {
    _loading = true;
    _error = null;
    notifyListeners();
    try {
      _accounts = await ApiService().fetchAccounts();
    } catch (e) {
      _error = e.toString();
    }
    _loading = false;
    notifyListeners();
  }
}

C. Provide State at the Top Level

In main.dart:

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'state/account_provider.dart';
import 'screens/home_screen.dart';

void main() {
  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => AccountProvider()),
        // Add other providers here
      ],
      child: FlexlinkApp(),
    ),
  );
}

class FlexlinkApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flexlink',
      theme: ThemeData(primarySwatch: Colors.deepPurple),
      home: HomeScreen(),
    );
  }
}

---

3. Sample Screen Migration: Account List

React:

export default function AccountList({ accounts }) {
  return (
    <div>
      {accounts.map(acc => (
        <div key={acc.id}>{acc.name}: ₦{acc.balance}</div>
      ))}
    </div>
  );
}

Flutter:

// account_list_screen.dart
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../state/account_provider.dart';
import '../widgets/account_card.dart';

class AccountListScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final provider = Provider.of<AccountProvider>(context);

    return Scaffold(
      appBar: AppBar(title: Text('Accounts')),
      body: provider.loading
          ? Center(child: CircularProgressIndicator())
          : provider.error != null
              ? Center(child: Text('Error: ${provider.error}'))
              : provider.accounts.isEmpty
                  ? Center(child: Text('No accounts found.'))
                  : ListView.builder(
                      itemCount: provider.accounts.length,
                      itemBuilder: (context, index) =>
                          AccountCard(account: provider.accounts[index]),
                    ),
      floatingActionButton: FloatingActionButton(
        onPressed: () => provider.fetchAccounts(),
        child: Icon(Icons.refresh),
      ),
    );
  }
}

---

4. Repeat for Other Screens

• Chat: Use a ChatProvider for messages and API calls.
• Settings: Use a SettingsProvider for user preferences.
• Modals: Use showModalBottomSheet or showDialog for OTP, linking, etc.

---

5. Testing and Polish

• Test each screen on iOS and Android.
• Add error/loading/empty states.
• Use your brand colors, fonts, and icons for consistency.

---

6. Next Steps

• Choose a screen to start with (e.g., Home, Accounts, Chat).
• I can provide a full Dart implementation for that screen, including state management.
• Or, I can help you scaffold the overall app structure and providers.

---

Let me know which screen you want to start with, or if you want a full starter template for the whole app!
I’ll provide the code and guidance for a robust, maintainable, and beautiful Flutter app.

Here’s how to test each Flutter screen on iOS and Android, add robust error/loading/empty states, and ensure your app uses your brand’s colors, fonts, and icons for a consistent, professional look:

---

1. Testing Each Screen on iOS and Android

A. Run on Emulators/Simulators

• Use flutter run to launch your app on both Android and iOS emulators.
• Use flutter devices to list available devices.
• For real device testing, connect your phone via USB and select it in your IDE or with flutter run -d <device_id>.

B. Manual Testing Checklist

• Navigate to each screen (Home, Accounts, Chat, Settings, Modals).
• Test all user flows: navigation, data fetching, form submissions, modals, etc.
• Rotate the device and test on different screen sizes.
• Test dark mode and light mode.

---

2. Add Error, Loading, and Empty States

A. Loading State

Show a spinner while data is loading:

if (provider.loading) {
  return Center(child: CircularProgressIndicator());
}

B. Error State

Show a friendly error message if something goes wrong:

if (provider.error != null) {
  return Center(child: Text('Error: ${provider.error}'));
}

C. Empty State

Show a message or illustration if there’s no data:

if (provider.accounts.isEmpty) {
  return Center(child: Text('No accounts found.'));
}

D. Example in a List Screen

body: provider.loading
    ? Center(child: CircularProgressIndicator())
    : provider.error != null
        ? Center(child: Text('Error: ${provider.error}'))
        : provider.accounts.isEmpty
            ? Center(child: Text('No accounts found.'))
            : ListView.builder(
                itemCount: provider.accounts.length,
                itemBuilder: (context, index) =>
                    AccountCard(account: provider.accounts[index]),
              ),

---

3. Use Brand Colors, Fonts, and Icons

A. Define Theme in main.dart

return MaterialApp(
  title: 'Flexlink',
  theme: ThemeData(
    primarySwatch: Colors.deepPurple,
    accentColor: Colors.amber,
    fontFamily: 'Montserrat', // Add your font to pubspec.yaml
    textTheme: TextTheme(
      headline6: TextStyle(fontWeight: FontWeight.bold),
      bodyText2: TextStyle(fontSize: 16),
    ),
  ),
  home: HomeScreen(),
);

B. Use Custom Icons

• Add SVG or PNG icons to your assets.
• Use flutter_svg for SVGs:

  import 'package:flutter_svg/flutter_svg.dart';
  SvgPicture.asset('assets/icons/naira.svg', width: 24, height: 24);

C. Consistent Widgets

• Use custom widgets for repeated UI (e.g., AccountCard, ActionButton, ChatBubble).
• Apply consistent padding, margin, and border radius.

---

4. Automated Widget Testing (Optional but Recommended)

• Write widget tests for each screen to ensure UI behaves as expected.
• Example:

  testWidgets('AccountListScreen shows loading spinner', (WidgetTester tester) async {
    // Provide a mock AccountProvider with loading=true
    // Pump the AccountListScreen
    // Expect to find CircularProgressIndicator
  });

---

5. Polish and Final Checks

• Test on both iOS and Android (emulator and real device).
• Check for overflow, clipping, and responsiveness.
• Test with both empty and full data sets.
• Test error handling by simulating API failures.

---

6. Next Steps

• Let me know which screen you want a full code sample for, or if you want a starter template for the whole app.
• I can provide:
  • A full Dart implementation for a specific screen (with all states and theming).
  • Guidance on setting up your brand’s theme and assets.
  • Example widget tests.

Just specify your next priority, and I’ll provide the code and guidance!

---

1. AI Chat Screen (Flutter)

Features:

• Chat bubbles for user and AI
• Input bar for typing messages
• Option to attach images (for OCR, etc.)
• Calls your backend /ai endpoint for responses

---

A. Chat Message Model

chat_message.dart

class ChatMessage {
  final String text;
  final bool isUser;
  ChatMessage({required this.text, required this.isUser});
}

---

B. Chat Bubble Widget

chat_bubble.dart

import 'package:flutter/material.dart';
import '../models/chat_message.dart';

class ChatBubble extends StatelessWidget {
  final ChatMessage message;
  const ChatBubble({required this.message});

  @override
  Widget build(BuildContext context) {
    return Align(
      alignment: message.isUser ? Alignment.centerRight : Alignment.centerLeft,
      child: Container(
        margin: EdgeInsets.symmetric(vertical: 4, horizontal: 8),
        padding: EdgeInsets.all(12),
        decoration: BoxDecoration(
          color: message.isUser ? Colors.blueAccent : Colors.grey[200],
          borderRadius: BorderRadius.circular(16),
        ),
        child: Text(
          message.text,
          style: TextStyle(color: message.isUser ? Colors.white : Colors.black87),
        ),
      ),
    );
  }
}

---

C. Chat Screen Implementation

chat_screen.dart

import 'package:flutter/material.dart';
import '../widgets/chat_bubble.dart';
import '../models/chat_message.dart';
// import your API service here

class ChatScreen extends StatefulWidget {
  @override
  _ChatScreenState createState() => _ChatScreenState();
}

class _ChatScreenState extends State<ChatScreen> {
  final List<ChatMessage> messages = [];
  final TextEditingController _controller = TextEditingController();
  bool _isLoading = false;

  void _sendMessage() async {
    final text = _controller.text.trim();
    if (text.isEmpty) return;
    setState(() {
      messages.add(ChatMessage(text: text, isUser: true));
      _isLoading = true;
    });
    _controller.clear();

    // TODO: Call your backend /ai endpoint and get the AI response
    // Example:
    // final aiResponse = await ApiService().sendChatMessage(text);
    // setState(() {
    //   messages.add(ChatMessage(text: aiResponse, isUser: false));
    //   _isLoading = false;
    // });

    // For now, simulate AI response:
    await Future.delayed(Duration(seconds: 1));
    setState(() {
      messages.add(ChatMessage(text: "AI: $text", isUser: false));
      _isLoading = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('AI Chat')),
      body: Column(
        children: [
          Expanded(
            child: ListView.builder(
              itemCount: messages.length,
              itemBuilder: (context, index) => ChatBubble(message: messages[index]),
            ),
          ),
          if (_isLoading)
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: CircularProgressIndicator(),
            ),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: Row(
              children: [
                Expanded(child: TextField(controller: _controller)),
                IconButton(icon: Icon(Icons.send), onPressed: _sendMessage),
              ],
            ),
          ),
        ],
      ),
    );
  }
}

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D. (Optional) Attach Image Button

Add an icon button for image attachment in the input row, and handle image picking/upload as needed.

---

2. Next Steps

• Integrate with your backend /ai endpoint for real AI responses.
• Add Provider or Bloc for chat state if you want to persist chat history or handle more complex flows.
• Polish the UI with your brand’s style.

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Would you like to proceed to the Settings screen, a modal (e.g., Link Account, OTP), or add API integration/state management to the chat?
Let me know your next priority!