refactor: Projektstruktur in app/ und backend/ aufgeteilt
This commit is contained in:
383
app/lib/login_view.dart
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383
app/lib/login_view.dart
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import 'dart:async';
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import 'package:flutter/foundation.dart';
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import 'package:votianlt_app/services/developer.dart' as developer;
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import 'package:flutter/material.dart';
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import 'package:package_info_plus/package_info_plus.dart';
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import 'services/websocket_service.dart';
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import 'services/dart_mq.dart';
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import 'services/database_service.dart';
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import 'app_state.dart';
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import 'l10n/app_localizations.dart';
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class LoginView extends StatefulWidget {
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const LoginView({super.key, this.suppressConnectionSnack = false});
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// If true, suppress connection-related SnackBars until the user attempts login
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final bool suppressConnectionSnack;
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@override
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State<LoginView> createState() => _LoginViewState();
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}
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class _LoginViewState extends State<LoginView> {
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final _formKey = GlobalKey<FormState>();
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final _emailController = TextEditingController();
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final _passwordController = TextEditingController();
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bool _isPasswordVisible = false;
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bool _isLoggingIn = false;
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final StompService _stompService = StompService();
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final AppState _appState = AppState();
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// DartMQ subscriptions for proper cleanup
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DartMQSubscription? _connectionStatusSubscription;
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DartMQSubscription? _authResponseSubscription;
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bool _logoutNoticeShown = false;
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bool _hasNavigatedToJobs = false;
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String _appVersion = '';
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@override
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void initState() {
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super.initState();
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// Pre-populate with test data
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if (kDebugMode) {
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_emailController.text = 'mail@svencarstensen.de';
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_passwordController.text = 'test123';
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}
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_loadAppVersion();
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_initializeStompService();
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// If we came here due to logout, show only a success message and suppress other connection snacks
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if (widget.suppressConnectionSnack && !_logoutNoticeShown) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted) return;
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_logoutNoticeShown = true;
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(AppLocalizations.of(context).loginSuccess), backgroundColor: Colors.green, duration: const Duration(seconds: 1)));
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});
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}
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}
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@override
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void dispose() {
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// Cancel all stream subscriptions to prevent setState() after dispose
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_connectionStatusSubscription?.cancel();
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_authResponseSubscription?.cancel();
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_emailController.dispose();
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_passwordController.dispose();
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// Don't dispose the singleton StompService as it may be used elsewhere
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// _stompService.dispose();
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super.dispose();
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}
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Future<void> _loadAppVersion() async {
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try {
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final PackageInfo packageInfo = await PackageInfo.fromPlatform();
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setState(() {
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_appVersion = packageInfo.version;
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});
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} catch (e) {
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developer.log('Error loading app version: $e', name: 'LoginView');
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}
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}
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void _initializeStompService() {
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// Listen to connection status changes via dart_mq
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// Note: Don't reset _isLoggingIn here - the login flow in _handleLogin
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// manages button state through its own error/success handling.
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_connectionStatusSubscription = DartMQ().subscribe<bool>(MQTopics.connectionStatus, (isConnected) {
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if (mounted) {
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setState(() {});
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}
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});
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// Listen to authentication responses via dart_mq
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_authResponseSubscription = DartMQ().subscribe<Map<String, dynamic>>(MQTopics.authResponse, (response) {
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final responseTime = DateTime.now();
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developer.log('=== AUTHENTICATION RESPONSE RECEIVED ===', name: 'LoginView');
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developer.log('Timestamp: ${responseTime.toIso8601String()}', name: 'LoginView');
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developer.log('Response data: $response', name: 'LoginView');
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if (mounted) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted) return;
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setState(() {
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_isLoggingIn = false;
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});
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if (response['success'] == true) {
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// Prevent duplicate navigation from multiple auth responses
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if (_hasNavigatedToJobs) {
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developer.log('Already navigated to jobs view - ignoring duplicate auth response', name: 'LoginView');
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return;
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}
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_hasNavigatedToJobs = true;
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final message = response['message'] ?? 'Anmeldung erfolgreich';
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final email = _emailController.text.trim();
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final password = _passwordController.text;
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developer.log('=== LOGIN SUCCESS ===', name: 'LoginView');
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developer.log('Email: $email', name: 'LoginView');
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developer.log('Message: $message', name: 'LoginView');
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// Store email as login identifier
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_appState.setLoggedInEmail(email);
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// Save credentials for auto-login on app restart
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DatabaseService().saveCredentials(email, password);
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// Navigate directly to jobs view - jobs will be loaded there
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developer.log('Navigating to jobs view - jobs will be loaded there...', name: 'LoginView');
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Navigator.of(context).pushReplacementNamed('/jobs');
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} else {
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final errorMessage = response['message'] ?? 'Unbekannter Fehler';
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final errorCode = response['code'] ?? 'No code';
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developer.log('=== LOGIN FAILURE ===', name: 'LoginView');
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developer.log('Error message: $errorMessage', name: 'LoginView');
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developer.log('Error code: $errorCode', name: 'LoginView');
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developer.log('Full error response: $response', name: 'LoginView');
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('${AppLocalizations.of(context).loginFailed}: $errorMessage'), backgroundColor: Colors.red, duration: const Duration(seconds: 1)));
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}
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});
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} else {
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developer.log('Widget not mounted - skipping UI updates for auth response', name: 'LoginView');
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}
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developer.log('Authentication response processing completed', name: 'LoginView');
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});
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}
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Future<void> _handleLogin() async {
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final loginStartTime = DateTime.now();
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final sessionId = loginStartTime.millisecondsSinceEpoch.toString();
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developer.log('=== LOGIN ATTEMPT STARTED ===', name: 'LoginView');
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developer.log('Session ID: $sessionId', name: 'LoginView');
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developer.log('Timestamp: ${loginStartTime.toIso8601String()}', name: 'LoginView');
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if (!_formKey.currentState!.validate()) {
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developer.log('Login validation failed - form is invalid', name: 'LoginView');
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return;
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}
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if (_isLoggingIn) {
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developer.log('Login already in progress - ignoring duplicate request', name: 'LoginView');
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return;
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}
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String email = _emailController.text.trim();
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developer.log('Login attempt for email: $email', name: 'LoginView');
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developer.log('Password length: ${_passwordController.text.length} characters', name: 'LoginView');
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// Capture ScaffoldMessenger and localizations before any async operations
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final scaffoldMessenger = ScaffoldMessenger.of(context);
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final localizations = AppLocalizations.of(context);
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if (!_stompService.isConnected) {
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developer.log('Not connected to STOMP server - establishing connection first', name: 'LoginView');
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developer.log('STOMP service connection state: ${_stompService.isConnected}', name: 'LoginView');
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// Always attempt connection to fixed STOMP endpoint (no discovery gating)
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// Show connecting message
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if (!widget.suppressConnectionSnack) {
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scaffoldMessenger.showSnackBar(SnackBar(content: Text(localizations.connecting), backgroundColor: Colors.blue, duration: const Duration(seconds: 1)));
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}
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// Set loading state
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setState(() {
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_isLoggingIn = true;
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});
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try {
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// Start connection to STOMP server
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await _stompService.connect();
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// Check if already connected after connect returns
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if (!_stompService.isConnected) {
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// Wait for connection to be established with a timeout
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try {
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final completer = Completer<bool>();
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final subscription = DartMQ().subscribe<bool>(MQTopics.connectionStatus, (isConnected) {
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if (isConnected && !completer.isCompleted) {
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completer.complete(true);
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}
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});
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await completer.future.timeout(const Duration(seconds: 12));
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subscription.cancel();
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developer.log('STOMP connection established - proceeding with login', name: 'LoginView');
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} on TimeoutException {
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developer.log('STOMP connection timed out', name: 'LoginView');
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}
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} else {
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developer.log('STOMP already connected after connect - proceeding with login', name: 'LoginView');
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}
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// Check if connection was successful
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if (!_stompService.isConnected) {
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setState(() {
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_isLoggingIn = false;
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});
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scaffoldMessenger.showSnackBar(SnackBar(content: Text(localizations.connectionTimeout), backgroundColor: Colors.red, duration: const Duration(seconds: 2)));
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return;
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}
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} catch (e, stackTrace) {
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setState(() {
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_isLoggingIn = false;
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});
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developer.log('Error connecting to STOMP server: $e', name: 'LoginView');
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developer.log('Stack trace: $stackTrace', name: 'LoginView');
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scaffoldMessenger.showSnackBar(SnackBar(content: Text('${localizations.connectionError}: $e'), backgroundColor: Colors.red, duration: const Duration(seconds: 1)));
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return;
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}
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}
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developer.log('Pre-login checks passed - initiating login request', name: 'LoginView');
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developer.log('Connection status: connected=${_stompService.isConnected}', name: 'LoginView');
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setState(() {
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_isLoggingIn = true;
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});
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String password = _passwordController.text;
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developer.log('Sending login request via STOMP service...', name: 'LoginView');
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try {
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// Send login request via STOMP
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await _stompService.login(email, password);
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final requestSentTime = DateTime.now();
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final requestDuration = requestSentTime.difference(loginStartTime).inMilliseconds;
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developer.log('Login request sent successfully after ${requestDuration}ms', name: 'LoginView');
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} catch (e, stackTrace) {
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final errorTime = DateTime.now();
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final errorDuration = errorTime.difference(loginStartTime).inMilliseconds;
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developer.log('LOGIN ERROR: Exception during login request after ${errorDuration}ms', name: 'LoginView');
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developer.log('Error: $e', name: 'LoginView');
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developer.log('Stack trace: $stackTrace', name: 'LoginView');
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setState(() {
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_isLoggingIn = false;
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});
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scaffoldMessenger.showSnackBar(SnackBar(content: Text('${localizations.loginError}: $e'), backgroundColor: Colors.red, duration: const Duration(seconds: 1)));
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}
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// The auth response will be handled by the stream listener
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// _isLoggingIn will be set to false in the listener
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developer.log('Login request phase completed - waiting for auth response', name: 'LoginView');
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.grey[50],
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body: Column(
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children: [
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Expanded(
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child: SafeArea(
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child: Center(
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(24.0),
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child: Form(
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key: _formKey,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// Logo oder App-Name
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Icon(Icons.account_circle, size: 100, color: Colors.deepPurple),
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const SizedBox(height: 32),
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Text(AppLocalizations.of(context).welcomeBack, style: Theme.of(context).textTheme.headlineMedium?.copyWith(fontWeight: FontWeight.bold, color: Colors.grey[800]), textAlign: TextAlign.center),
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const SizedBox(height: 8),
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Text(AppLocalizations.of(context).loginSubtitle, style: Theme.of(context).textTheme.bodyLarge?.copyWith(color: Colors.grey[600]), textAlign: TextAlign.center),
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const SizedBox(height: 32),
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// E-Mail-Feld
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TextFormField(
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controller: _emailController,
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keyboardType: TextInputType.emailAddress,
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decoration: InputDecoration(labelText: 'E-Mail-Adresse', hintText: 'Geben Sie Ihre E-Mail-Adresse ein', prefixIcon: const Icon(Icons.email_outlined), border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)), filled: true, fillColor: Colors.white),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Bitte geben Sie Ihre E-Mail-Adresse ein';
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}
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if (!RegExp(r'^[A-Za-z0-9_.+-]+@[A-Za-z0-9-]+\.[A-Za-z0-9.-]+$').hasMatch(value)) {
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return 'Bitte geben Sie eine gültige E-Mail-Adresse ein';
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}
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return null;
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},
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),
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const SizedBox(height: 16),
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// Passwort-Feld
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TextFormField(
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controller: _passwordController,
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obscureText: !_isPasswordVisible,
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decoration: InputDecoration(
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labelText: 'Passwort',
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hintText: 'Geben Sie Ihr Passwort ein',
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prefixIcon: const Icon(Icons.lock_outlined),
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suffixIcon: IconButton(
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icon: Icon(_isPasswordVisible ? Icons.visibility : Icons.visibility_off),
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onPressed: () {
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setState(() {
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_isPasswordVisible = !_isPasswordVisible;
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});
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},
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),
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border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
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filled: true,
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fillColor: Colors.white,
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),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Bitte geben Sie Ihr Passwort ein';
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}
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if (value.length < 6) {
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return 'Das Passwort muss mindestens 6 Zeichen lang sein';
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}
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return null;
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},
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),
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const SizedBox(height: 24),
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// Passwort vergessen Link
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Align(
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alignment: Alignment.centerRight,
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child: TextButton(
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onPressed: () {
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// Hier würde die "Passwort vergessen" Funktionalität implementiert werden
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(AppLocalizations.of(context).forgotPasswordMessage), duration: const Duration(seconds: 1)));
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},
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child: Text(AppLocalizations.of(context).forgotPassword, style: const TextStyle(color: Colors.deepPurple, fontWeight: FontWeight.w500)),
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),
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),
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const SizedBox(height: 24),
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// Verbindungsstatus
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// Anmelden Button
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ElevatedButton(onPressed: _isLoggingIn ? null : _handleLogin, style: ElevatedButton.styleFrom(backgroundColor: Colors.deepPurple, foregroundColor: Colors.white, padding: const EdgeInsets.symmetric(vertical: 16), shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)), elevation: 2), child: _isLoggingIn ? Row(mainAxisAlignment: MainAxisAlignment.center, children: const [SizedBox(width: 18, height: 18, child: CircularProgressIndicator(strokeWidth: 2.5, valueColor: AlwaysStoppedAnimation<Color>(Colors.white))), SizedBox(width: 12), Text('Verbinden…', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600))]) : const Text('Anmelden', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600))),
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const SizedBox(height: 24),
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],
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),
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),
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),
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),
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),
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),
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// Version number at the bottom
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if (_appVersion.isNotEmpty) Padding(padding: const EdgeInsets.only(bottom: 16.0), child: Text('Version $_appVersion', style: TextStyle(fontSize: 12, color: Colors.grey[500]), textAlign: TextAlign.center)),
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],
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),
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);
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}
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}
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