Complete Example

Complete Example

import 'package:flutter/material.dart';
import 'package:alphyn_sdk/alphyn_sdk.dart';
import 'dart:async';

class SecurityScreen extends StatefulWidget {
  @override
  _SecurityScreenState createState() => _SecurityScreenState();
}

class _SecurityScreenState extends State<SecurityScreen> {
  bool _isInitialized = false;
  String _deviceId = '';
  String _appHash = '';
  List<String> _scanResults = [];
  List<AlphynCallbackResult> _securityEvents = [];
  StreamSubscription<AlphynCallbackResult>? _eventSubscription;

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

  @override
  void dispose() {
    _eventSubscription?.cancel();
    super.dispose();
  }

  Future<void> _initializeSdk() async {
    try {
      // Check initialization status (SDK is initialized natively)
      final initialized = await AlphynSdk.isInitialized();

      if (initialized == true) {
        setState(() {
          _isInitialized = true;
        });

        // Load device information
        await _loadDeviceInfo();

        // Perform security scan
        await _performScan();
      }
    } catch (e) {
      print('SDK check failed: $e');
    }
  }

  void _setupSecurityListener() {
    // Subscribe to security events stream
    _eventSubscription = AlphynSdk.securityEvents().listen(
      (event) {
        setState(() {
          _securityEvents.insert(0, event);
          if (_securityEvents.length > 50) {
            _securityEvents = _securityEvents.take(50).toList();
          }
        });
      },
      onError: (error) {
        print('Security events error: $error');
      },
    );
  }

  Future<void> _loadDeviceInfo() async {
    final deviceId = await AlphynSdk.getDeviceId();
    final appHash = await AlphynSdk.getAppHash();

    setState(() {
      _deviceId = deviceId;
      _appHash = appHash;
    });
  }

  Future<void> _performScan() async {
    final scanResult = await AlphynSdk.getScanResult();
    // getRejectReasons() returns a newline-separated string; split it into a list
    final rejectReasonsRaw = await AlphynSdk.getRejectReasons();
    final rejectReasons = rejectReasonsRaw.split('\n').where((line) => line.trim().isNotEmpty).toList();

    setState(() {
      _scanResults = [];
      if (scanResult != null && scanResult.isNotEmpty) {
        _scanResults.add(scanResult);
      }
      if (rejectReasons.isNotEmpty) {
        _scanResults.addAll(rejectReasons);
      }
    });
  }

  Future<void> _verifyTestAction() async {
    try {
      // signAction signs with an enrolled user's hardware key: enrollForMfa(userId) must have
      // run once on this device first. See https://docs.byteria.dev/mfa/
      final result = await AlphynSdk.signAction(
        userId: userId,
        actionLabel: 'test_action',
        context: {
          'timestamp': DateTime.now().toIso8601String(),
          'source': 'example_app',
        },
      );

      if (result.success) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('Action verified! Token: ${result.token}')),
        );
      } else {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('Verification failed: ${result.errorMessage}')),
        );
      }
    } catch (e) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('Error: $e')),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Security Dashboard')),
      body: _isInitialized
          ? SingleChildScrollView(
              padding: EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text('Device ID: $_deviceId', style: TextStyle(fontWeight: FontWeight.bold)),
                  SizedBox(height: 8),
                  Text('App Hash: $_appHash', style: TextStyle(fontWeight: FontWeight.bold)),
                  SizedBox(height: 16),
                  Text('Scan Results:', style: TextStyle(fontWeight: FontWeight.bold)),
                  ..._scanResults.map((result) => Padding(
                    padding: EdgeInsets.only(left: 16, top: 4),
                    child: Text(result),
                  )),
                  SizedBox(height: 16),
                  ElevatedButton(
                    onPressed: _verifyTestAction,
                    child: Text('Verify Test Action'),
                  ),
                  SizedBox(height: 16),
                  Text('Security Events (${_securityEvents.length}):', style: TextStyle(fontWeight: FontWeight.bold)),
                  ..._securityEvents.take(10).map((event) => Padding(
                    padding: EdgeInsets.only(left: 16, top: 4),
                    child: Text('${event.originalEventType.name}: ${event.message}'),
                  )),
                ],
              ),
            )
          : Center(child: CircularProgressIndicator()),
    );
  }
}