419 lines
19 KiB
Dart
419 lines
19 KiB
Dart
import 'dart:developer';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import '../../api/errors/auth_exception.dart';
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import '../../api/errors/error_mapper.dart';
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import '../../api/marianumcloud/talk/room/get_room.dart';
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import '../../api/marianumcloud/talk/room/get_room_params.dart';
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import '../../model/account_data.dart';
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import '../../state/app/modules/account/bloc/account_bloc.dart';
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import '../../state/app/modules/account/bloc/account_state.dart';
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import '../../theming/light_app_theme.dart';
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class Login extends StatefulWidget {
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const Login({super.key});
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@override
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State<Login> createState() => _LoginState();
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}
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class _LoginState extends State<Login> {
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static const _marianumRed = LightAppTheme.marianumRed;
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final _formKey = GlobalKey<FormState>();
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final _usernameController = TextEditingController();
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final _passwordController = TextEditingController();
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final _passwordFocus = FocusNode();
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bool _loading = false;
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String? _errorMessage;
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String? _errorDetails;
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@override
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void didChangeDependencies() {
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super.didChangeDependencies();
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precacheImage(const AssetImage('assets/logo/icon.png'), context);
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}
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@override
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void dispose() {
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_usernameController.dispose();
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_passwordController.dispose();
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_passwordFocus.dispose();
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super.dispose();
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}
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String? _required(String? value) =>
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(value ?? '').trim().isEmpty ? 'Eingabe erforderlich' : null;
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Future<void> _submit() async {
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if (_loading) return;
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if (!(_formKey.currentState?.validate() ?? false)) return;
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setState(() {
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_loading = true;
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_errorMessage = null;
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_errorDetails = null;
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});
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final username = _usernameController.text.trim().toLowerCase();
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final password = _passwordController.text;
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try {
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await AccountData().removeData();
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await AccountData().setData(username, password);
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await GetRoom(GetRoomParams(includeStatus: false)).run();
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if (!mounted) return;
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context.read<AccountBloc>().setStatus(AccountStatus.loggedIn);
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} catch (e) {
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log(e.toString());
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await AccountData().removeData();
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if (!mounted) return;
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// 401 from the probe means the credentials were wrong; everything else
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// (no network, server down, TLS errors, …) gets the generic mapped
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// message so the user knows it isn't their typo.
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final isWrongCredentials = e is AuthException && e.statusCode == 401;
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setState(() {
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_errorMessage = isWrongCredentials
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? 'Benutzername oder Passwort falsch.'
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: errorToUserMessage(e);
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_errorDetails = errorToTechnicalDetails(e);
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});
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} finally {
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if (mounted) setState(() => _loading = false);
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}
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}
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void _showErrorDetails() {
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final details = _errorDetails;
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if (details == null) return;
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showDialog<void>(
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context: context,
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builder: (dialogContext) {
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final theme = Theme.of(dialogContext);
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return AlertDialog(
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icon: Icon(Icons.error_outline, color: theme.colorScheme.error),
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title: const Text('Fehlerdetails'),
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content: SingleChildScrollView(
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child: SelectableText(details, style: theme.textTheme.bodySmall),
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),
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actions: [
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TextButton.icon(
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onPressed: () async {
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await Clipboard.setData(ClipboardData(text: details));
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if (!dialogContext.mounted) return;
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ScaffoldMessenger.of(dialogContext).showSnackBar(
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const SnackBar(
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content: Text('In Zwischenablage kopiert'),
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duration: Duration(seconds: 2),
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),
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);
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},
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icon: const Icon(Icons.copy_outlined, size: 18),
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label: const Text('Kopieren'),
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),
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TextButton(
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onPressed: () => Navigator.of(dialogContext).pop(),
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child: const Text('Schließen'),
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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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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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return Scaffold(
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backgroundColor: _marianumRed,
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body: SafeArea(
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child: LayoutBuilder(
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builder: (context, constraints) => SingleChildScrollView(
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padding: const EdgeInsets.symmetric(horizontal: 24),
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child: Center(
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child: ConstrainedBox(
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constraints: BoxConstraints(
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minHeight: constraints.maxHeight,
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maxWidth: 420,
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),
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child: IntrinsicHeight(
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child: Column(
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children: [
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const SizedBox(height: 40),
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Image.asset(
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'assets/logo/icon.png',
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height: 110,
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fit: BoxFit.contain,
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gaplessPlayback: true,
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),
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const SizedBox(height: 20),
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const Text(
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'Marianum Fulda',
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textAlign: TextAlign.center,
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style: TextStyle(
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color: Colors.white,
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fontSize: 26,
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fontWeight: FontWeight.w600,
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letterSpacing: 0.3,
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),
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),
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const SizedBox(height: 6),
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Text(
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'Stundenplan, Talk & Dateien an einem Ort.',
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textAlign: TextAlign.center,
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.85),
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fontSize: 14,
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height: 1.3,
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),
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),
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const SizedBox(height: 28),
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Card(
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elevation: 8,
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shadowColor: Colors.black.withValues(alpha: 0.35),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(20),
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),
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color: theme.colorScheme.surface,
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child: Padding(
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padding: const EdgeInsets.fromLTRB(24, 24, 24, 20),
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child: Form(
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key: _formKey,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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Text(
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'Anmelden',
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style: theme.textTheme.titleLarge?.copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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const SizedBox(height: 6),
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Text(
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'Melde dich mit deinen Marianum-Zugangsdaten an.',
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style: theme.textTheme.bodySmall?.copyWith(
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color: theme.colorScheme.onSurfaceVariant,
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),
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),
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const SizedBox(height: 20),
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TextFormField(
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controller: _usernameController,
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enabled: !_loading,
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validator: _required,
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autocorrect: false,
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textInputAction: TextInputAction.next,
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onFieldSubmitted: (_) =>
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_passwordFocus.requestFocus(),
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decoration: InputDecoration(
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labelText: 'Nutzername',
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prefixIcon: const Icon(
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Icons.person_outline,
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),
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filled: true,
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fillColor: theme
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.colorScheme
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.surfaceContainerHighest
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.withValues(alpha: 0.4),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(
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color: theme.colorScheme.primary,
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width: 1.5,
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),
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),
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),
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),
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const SizedBox(height: 12),
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TextFormField(
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controller: _passwordController,
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focusNode: _passwordFocus,
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enabled: !_loading,
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validator: _required,
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obscureText: true,
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obscuringCharacter: '•',
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autocorrect: false,
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enableSuggestions: false,
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keyboardType: TextInputType.visiblePassword,
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textInputAction: TextInputAction.done,
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onFieldSubmitted: (_) => _submit(),
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decoration: InputDecoration(
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labelText: 'Passwort',
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prefixIcon: const Icon(Icons.lock_outline),
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filled: true,
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fillColor: theme
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.colorScheme
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.surfaceContainerHighest
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.withValues(alpha: 0.4),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(
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color: theme.colorScheme.primary,
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width: 1.5,
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),
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),
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),
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),
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AnimatedSize(
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duration: const Duration(milliseconds: 180),
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curve: Curves.easeOut,
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child: _errorMessage == null
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? const SizedBox(
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height: 0,
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width: double.infinity,
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)
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: Padding(
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padding: const EdgeInsets.only(
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top: 14,
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),
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child: Material(
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color: theme
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.colorScheme
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.errorContainer
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.withValues(alpha: 0.6),
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borderRadius: BorderRadius.circular(
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12,
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),
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child: InkWell(
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onTap: _errorDetails != null
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? _showErrorDetails
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: null,
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borderRadius:
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BorderRadius.circular(12),
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child: Padding(
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padding:
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const EdgeInsets.symmetric(
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horizontal: 12,
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vertical: 10,
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),
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child: Row(
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children: [
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Icon(
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Icons.error_outline,
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size: 20,
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color: theme
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.colorScheme
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.onErrorContainer,
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),
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const SizedBox(width: 10),
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Expanded(
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child: Text(
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_errorMessage!,
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style: TextStyle(
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color: theme
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.colorScheme
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.onErrorContainer,
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fontSize: 13,
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height: 1.3,
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),
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),
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),
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if (_errorDetails !=
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null) ...[
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const SizedBox(width: 8),
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Icon(
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Icons.chevron_right,
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size: 20,
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color: theme
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.colorScheme
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.onErrorContainer
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.withValues(
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alpha: 0.7,
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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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),
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),
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),
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const SizedBox(height: 20),
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SizedBox(
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height: 50,
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child: FilledButton(
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onPressed: _loading ? null : _submit,
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style: FilledButton.styleFrom(
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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textStyle: const TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.w600,
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),
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),
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child: _loading
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? const SizedBox(
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height: 22,
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width: 22,
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child: CircularProgressIndicator(
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strokeWidth: 2.5,
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color: Colors.white,
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),
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)
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: const Text('Anmelden'),
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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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const SizedBox(height: 18),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 8),
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child: Text(
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'Inoffizieller Nextcloud & Webuntis Client. Wird nicht vom Marianum betrieben. Keine Gewähr für Vollständigkeit, Richtigkeit und Aktualität.',
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textAlign: TextAlign.center,
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.75),
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fontSize: 11,
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height: 1.4,
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),
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),
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),
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const Spacer(),
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Padding(
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padding: const EdgeInsets.only(top: 16, bottom: 8),
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child: Text(
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'Marianum Fulda. Die persönliche Schule.',
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textAlign: TextAlign.center,
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.7),
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fontSize: 12,
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fontStyle: FontStyle.italic,
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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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),
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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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