Usage

import 'package:ironchip_lbfraud_plugin/ironchip_lbfraud.dart';

    // Replace APIKEY with the desired generated api key.
    // By default our SDK target to the production environment.
    // In case you desire to target a diferent enviroment:
    // LBFraudSDK fraud = new LbfraudFlutterPlugin.initFraudSDK("APIKEY", env: Environment.testing);
    await _lbfraudPlugin.initFraudSDK(apiKey);

    try {
      // TransactionID (required,unique): transaction identifier request for fraud results
      // UserID (required): User identifier
      // extraData (optional): extra information for analysis
      // You can omit the await in case the result of the action isn't necessary
      var result =
          await _lbfraudPlugin.sendTransaction(transactionID, userID, {});

      _showResult = result!;
      _resultError = false;
    } catch (e) {
      _showResult = e.toString();
      _resultError = true;
    }

   try {
      var result =
          await _lbfraudPlugin.setProxy(host, port);
    } catch (e) {
    }

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:math';
import 'dart:convert'; // Import for base64Encode and utf8

import 'package:flutter/services.dart';
import 'package:ironchip_lbfraud/ironchip_lbfraud.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final _lbfraudPlugin = IronchipLbfraud();
  String apiKey = "APIKEY"; // Replace APIKEY with the desired generated api key.
  bool _isLbfraudInitialized = false;

  String userID = "john.doe@gmail.com"; // User identifier
  String _showResult = "";
  bool _resultError = false;

  @override
  void initState() {
    super.initState();
  }

  // LBFraud methods are asynchronous, so we initialize in an async method.
  Future<void> initLBFraudState() async {
    try {
      await _lbfraudPlugin.initFraudSDK(apiKey);
      _isLbfraudInitialized = true;
    } catch (e) {
      _isLbfraudInitialized = false;
    }

    setState(() {
      _isLbfraudInitialized = _isLbfraudInitialized;
    });
  }

  // Function to generate a random transaction ID
  String generateRandomTransactionID(int length) {
    const _chars =
        'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890';
    Random _rnd = Random();

    return String.fromCharCodes(Iterable.generate(
        length, (_) => _chars.codeUnitAt(_rnd.nextInt(_chars.length))));
  }

  // Function to perform hashing using SHA-256
  Future<String> sha256Hash(String text) async {
    var bytes = utf8.encode(text);
    var digest = await compute(_hash, bytes);
    return base64UrlEncode(digest);
  }

// If you want, you can use the crypto library to hash the user ID; otherwise, implement a method.
// pubspec.yml
//(dependencies:
//  flutter:
//    sdk: flutter
//  crypto: ^3.0.1 # Make sure to have the latest version.
//  )
  static List<int> _hash(List<int> bytes) {
  var digest = sha256.convert(bytes);
  return digest.bytes;
}

  // Function to trim, lowercase, and hash the userID
  Future<String> anonymizeUserID(String userID) async {
    String trimmedLowercaseUserID = userID.trim().toLowerCase();
    return await sha256Hash(trimmedLowercaseUserID);
  }

  // Simulated function to perform login
  Future<bool> performLogin(String username, String password) async {
    // Simulate a delay for authentication
    await Future.delayed(Duration(seconds: 2));
    return true; // Change as needed
  }

  Future<void> sendTransaction() async {
    try {
      // Simulate user input for login
      const username = 'testuser'; // Replace with the actual username
      const password = 'testpassword'; // Replace with the actual password

      bool loginSuccessful = await performLogin(username, password);

      if (loginSuccessful) {
        // Anonymize the userID before sending the transaction
        String anonymizedUserID = await anonymizeUserID(userID);

        // TransactionID (required, unique): transaction identifier request for fraud results
        var result = await _lbfraudPlugin.sendTransaction(
          generateRandomTransactionID(10),
          anonymizedUserID,
          {},
        );

        _showResult = result!;
        _resultError = false;
      } else {
        _showResult = 'Login failed.';
        _resultError = true;
      }
    } catch (e) {
      _showResult = e.toString();
      _resultError = true;
    }

    setState(() {
      _resultError = _resultError;
      _showResult = _showResult;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Ironchip LBFraud example app'),
          backgroundColor: Color(0xFF005255),
        ),
        body: Container(
          margin: EdgeInsets.all(40.0),
          child: Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                TextField(
                  onChanged: (value) {
                    apiKey = value;
                  },
                  decoration: const InputDecoration(labelText: "API Key"),
                ),
                SizedBox(height: 20),
                Text(
                  _isLbfraudInitialized
                      ? "LBFraud initialized"
                      : "LBFraud is not initialized",
                  style: TextStyle(
                    color: _isLbfraudInitialized
                        ? Color(0xFF495c11f)
                        : Color(0xFFF44336),
                  ),
                ),
                SizedBox(height: 20),
                ElevatedButton(
                  onPressed: initLBFraudState,
                  style: ElevatedButton.styleFrom(
                    primary: Color(0xFF495c11f), // Set button color to #4eed56
                  ),
                  child: Text('Initialize LBFraud'),
                ),
                TextField(
                  onChanged: (value) {
                    userID = value;
                  },
                  decoration: const InputDecoration(labelText: "User ID"),
                ),
                SizedBox(height: 20),
                ElevatedButton(
                  onPressed: _isLbfraudInitialized ? sendTransaction : null,
                  style: ElevatedButton.styleFrom(
                    primary: Color(0xFF495c11f), // Set button color to #4eed56
                  ),
                  child: Text('Send Transaction'),
                ),
                SizedBox(height: 20),
                Text(
                  _showResult,
                  style: TextStyle(
                    color: _resultError ? Color(0xFFF44336) : Colors.black,
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}