Julius Joska
8081d98c67
Initial public release. Anonymous on-device identity (no phone number, e-mail, or password), Signal-protocol cryptography (X3DH + PQXDH, Double Ratchet, sealed sender) via libsignal, a metadata-minimizing relay, group chats, disappearing messages, encrypted local storage, optional Tor transport, and a UI localized into Czech, English, German, Russian, and Italian. Monorepo: Flutter client (app/), Rust relay + wire types (rust/), protobuf definitions (proto/), self-host deploy (deploy/). Licensed under AGPL-3.0 with an app-store distribution exception (§7).
402 lines
13 KiB
Dart
402 lines
13 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import 'package:sepot/core/l10n/error_messages.dart';
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import 'package:sepot/core/l10n/l10n.dart';
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import 'package:sepot/core/theme/app_theme.dart';
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import 'package:sepot/providers/identity_provider.dart';
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import 'package:sepot/providers/storage_provider.dart';
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import 'package:sepot/widgets/sepot_logo.dart';
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/// Onboarding — 3 stránky + generování identity
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class OnboardingScreen extends ConsumerStatefulWidget {
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const OnboardingScreen({super.key});
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@override
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ConsumerState<OnboardingScreen> createState() => _OnboardingScreenState();
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}
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class _OnboardingScreenState extends ConsumerState<OnboardingScreen> {
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final _pageController = PageController();
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int _currentPage = 0;
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final _nameController = TextEditingController();
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List<String>? _seedPhrase;
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bool _isCreating = false;
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bool _seedSaved = false;
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@override
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void dispose() {
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_pageController.dispose();
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_nameController.dispose();
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super.dispose();
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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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body: SafeArea(
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child: Column(
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children: [
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// Indikátor stránek
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
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child: Row(
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children: List.generate(3, (i) {
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return Expanded(
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child: Container(
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height: 3,
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margin: const EdgeInsets.symmetric(horizontal: 4),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(2),
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color: i <= _currentPage
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? SepotColors.ember
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: SepotColors.border,
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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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// Stránky
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Expanded(
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child: PageView(
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controller: _pageController,
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physics: const NeverScrollableScrollPhysics(),
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onPageChanged: (page) => setState(() => _currentPage = page),
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children: [
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_buildWelcomePage(),
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_buildEncryptionPage(),
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_buildIdentityPage(),
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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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/// Stránka 1: Uvítání
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Widget _buildWelcomePage() {
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return Padding(
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padding: const EdgeInsets.all(32),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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const SepotLogo(size: 100),
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const SizedBox(height: 48),
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Text(
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context.l10n.onboardingWelcomeTitle,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 28,
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fontWeight: FontWeight.w700,
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color: SepotColors.textPrimary,
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),
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),
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const SizedBox(height: 16),
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Text(
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context.l10n.onboardingWelcomeSubtitle,
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textAlign: TextAlign.center,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 16,
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height: 1.6,
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color: SepotColors.textSecondary,
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),
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),
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const Spacer(),
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ElevatedButton(
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onPressed: () => _pageController.nextPage(
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duration: const Duration(milliseconds: 300),
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curve: Curves.easeInOut,
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),
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child: Text(context.l10n.onboardingStart),
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),
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const SizedBox(height: 8),
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TextButton(
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onPressed: () => context.push('/restore'),
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child: Text(context.l10n.onboardingRestoreExisting),
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),
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],
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),
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);
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}
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/// Stránka 2: Vysvětlení šifrování
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Widget _buildEncryptionPage() {
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return Padding(
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padding: const EdgeInsets.all(32),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Container(
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width: 80,
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height: 80,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: SepotColors.mist.withValues(alpha: 0.1),
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border: Border.all(color: SepotColors.mist.withValues(alpha: 0.3)),
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),
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child: const Icon(
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Icons.shield_rounded,
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size: 40,
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color: SepotColors.mist,
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),
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),
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const SizedBox(height: 32),
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Text(
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context.l10n.onboardingEncryptionTitle,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 24,
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fontWeight: FontWeight.w700,
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color: SepotColors.textPrimary,
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),
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),
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const SizedBox(height: 24),
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_buildFeatureRow(
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Icons.lock_rounded,
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context.l10n.onboardingFeatureSignalTitle,
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context.l10n.onboardingFeatureSignalSubtitle,
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),
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const SizedBox(height: 16),
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_buildFeatureRow(
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Icons.fingerprint,
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context.l10n.onboardingFeaturePqTitle,
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context.l10n.onboardingFeaturePqSubtitle,
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),
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const SizedBox(height: 16),
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_buildFeatureRow(
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Icons.phone_android_rounded,
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context.l10n.onboardingFeatureLocalKeysTitle,
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context.l10n.onboardingFeatureLocalKeysSubtitle,
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),
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const SizedBox(height: 16),
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_buildFeatureRow(
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Icons.timer_outlined,
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context.l10n.chatDisappearingMessages,
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context.l10n.onboardingFeatureDisappearingSubtitle,
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),
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const Spacer(),
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ElevatedButton(
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onPressed: () => _pageController.nextPage(
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duration: const Duration(milliseconds: 300),
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curve: Curves.easeInOut,
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),
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child: Text(context.l10n.commonContinue),
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),
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],
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),
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);
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}
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Widget _buildFeatureRow(IconData icon, String title, String subtitle) {
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return Row(
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children: [
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Container(
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width: 44,
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height: 44,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(12),
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color: SepotColors.surfaceVariant,
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),
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child: Icon(icon, size: 22, color: SepotColors.ember),
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),
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const SizedBox(width: 16),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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title,
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style: const TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.w600,
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color: SepotColors.textPrimary,
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),
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),
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Text(
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subtitle,
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style: const TextStyle(
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fontSize: 12,
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color: SepotColors.textSecondary,
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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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/// Stránka 3: Generování identity
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Widget _buildIdentityPage() {
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return Padding(
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padding: const EdgeInsets.all(32),
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child: SingleChildScrollView(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const SizedBox(height: 16),
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Text(
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context.l10n.onboardingIdentityTitle,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 24,
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fontWeight: FontWeight.w700,
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color: SepotColors.textPrimary,
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),
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),
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const SizedBox(height: 8),
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Text(
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context.l10n.onboardingIdentitySubtitle,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 14,
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color: SepotColors.textSecondary,
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),
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),
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const SizedBox(height: 32),
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TextField(
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controller: _nameController,
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decoration: InputDecoration(
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labelText: context.l10n.onboardingDisplayNameLabel,
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hintText: context.l10n.onboardingDisplayNameHint,
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prefixIcon: const Icon(Icons.person_outline),
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),
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textCapitalization: TextCapitalization.words,
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// Bez rebuildů by tlačítko „Vygenerovat klíče" zůstalo
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// navždy disabled (jeho stav čte controller v build())
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onChanged: (_) => setState(() {}),
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),
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const SizedBox(height: 32),
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if (_seedPhrase != null) ...[
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Text(
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context.l10n.settingsSeedPhraseTitle,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 16,
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fontWeight: FontWeight.w600,
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color: SepotColors.textPrimary,
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),
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),
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const SizedBox(height: 8),
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Text(
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context.l10n.onboardingSeedPhraseWarning(_seedPhrase!.length),
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style: const TextStyle(
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fontSize: 13,
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color: SepotColors.warning,
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),
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),
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const SizedBox(height: 16),
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Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(16),
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color: SepotColors.surfaceVariant,
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border: Border.all(color: SepotColors.border),
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),
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child: Wrap(
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spacing: 8,
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runSpacing: 8,
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children: List.generate(_seedPhrase!.length, (i) {
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return Container(
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padding: const EdgeInsets.symmetric(
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horizontal: 12,
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vertical: 8,
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),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(8),
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color: SepotColors.surface,
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border: Border.all(color: SepotColors.border),
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),
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child: Text(
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'${i + 1}. ${_seedPhrase![i]}',
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style: SepotTheme.cryptoText.copyWith(fontSize: 13),
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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: 16),
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CheckboxListTile(
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value: _seedSaved,
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onChanged: (v) => setState(() => _seedSaved = v ?? false),
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title: Text(
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context.l10n.onboardingSeedSavedConfirm,
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style: const TextStyle(fontSize: 14),
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),
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activeColor: SepotColors.ember,
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controlAffinity: ListTileControlAffinity.leading,
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contentPadding: EdgeInsets.zero,
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),
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],
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const SizedBox(height: 24),
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if (_seedPhrase == null)
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ElevatedButton(
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onPressed: _nameController.text.trim().isNotEmpty
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? _generateIdentity
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: null,
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child: _isCreating
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? const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: Colors.white,
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),
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)
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: Text(context.l10n.onboardingGenerateKeys),
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)
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else
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ElevatedButton(
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onPressed: _seedSaved ? _completeOnboarding : null,
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child: Text(context.l10n.commonContinue),
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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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Future<void> _generateIdentity() async {
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if (_nameController.text.trim().isEmpty) return;
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setState(() => _isCreating = true);
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try {
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// Vygeneruj identitu
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final identity = await ref
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.read(identityProvider.notifier)
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.createIdentity(_nameController.text.trim());
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// Seed fráze = skutečná záloha identity klíče (BIP39 enkódování),
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// NE nezávislá slova — jinak by obnova nikdy nefungovala
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final seed = identity.mnemonic;
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await ref.read(storageProvider).saveSeedPhrase(seed);
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setState(() {
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_seedPhrase = seed;
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_isCreating = false;
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});
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} catch (e) {
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setState(() => _isCreating = false);
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(describeError(context.l10n, e))),
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);
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}
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}
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}
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Future<void> _completeOnboarding() async {
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final storage = ref.read(storageProvider);
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await storage.setOnboardingComplete(true);
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if (mounted) {
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context.go('/pin-setup');
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}
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}
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}
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