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ivan2282
278
lib/screens/settings/export_session_screen.dart
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278
lib/screens/settings/export_session_screen.dart
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import 'dart:convert';
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import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:file_saver/file_saver.dart';
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import 'package:gwid/api_service.dart';
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import 'package:gwid/proxy_service.dart';
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import 'package:gwid/spoofing_service.dart';
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import 'package:encrypt/encrypt.dart' as encrypt;
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import 'package:crypto/crypto.dart' as crypto;
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class ExportSessionScreen extends StatefulWidget {
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const ExportSessionScreen({super.key});
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@override
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State<ExportSessionScreen> createState() => _ExportSessionScreenState();
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}
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class _ExportSessionScreenState extends State<ExportSessionScreen> {
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final _passwordController = TextEditingController();
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bool _isPasswordVisible = false;
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bool _isExporting = false;
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bool _saveProxySettings = false;
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Future<void> _exportAndSaveSession() async {
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if (!mounted) return;
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setState(() => _isExporting = true);
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final messenger = ScaffoldMessenger.of(context);
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try {
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final spoofData = await SpoofingService.getSpoofedSessionData();
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final token = ApiService.instance.token;
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if (token == null || token.isEmpty) {
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throw Exception('Токен пользователя не найден.');
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}
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final sessionData = <String, dynamic>{
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'token': token,
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'spoof_data': spoofData ?? 'Подмена устройства неактивна',
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};
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if (_saveProxySettings) {
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final proxySettings = await ProxyService.instance.loadProxySettings();
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sessionData['proxy_settings'] = proxySettings.toJson();
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}
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const jsonEncoder = JsonEncoder.withIndent(' ');
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final plainJsonContent = jsonEncoder.convert(sessionData);
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String finalFileContent;
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final password = _passwordController.text;
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if (password.isNotEmpty) {
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final keyBytes = utf8.encode(password);
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final keyHash = crypto.sha256.convert(keyBytes);
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final key = encrypt.Key(Uint8List.fromList(keyHash.bytes));
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final iv = encrypt.IV.fromLength(16);
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final encrypter = encrypt.Encrypter(
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encrypt.AES(key, mode: encrypt.AESMode.cbc),
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);
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final encrypted = encrypter.encrypt(plainJsonContent, iv: iv);
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final encryptedOutput = {
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'encrypted': true,
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'iv_base64': iv.base64,
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'data_base64': encrypted.base64,
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};
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finalFileContent = jsonEncoder.convert(encryptedOutput);
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} else {
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finalFileContent = plainJsonContent;
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}
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Uint8List bytes = Uint8List.fromList(utf8.encode(finalFileContent));
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String? filePath = await FileSaver.instance.saveAs(
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name: 'komet_session_${DateTime.now().millisecondsSinceEpoch}',
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bytes: bytes,
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fileExtension: 'json',
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mimeType: MimeType.json,
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);
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if (filePath != null && mounted) {
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messenger.showSnackBar(
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const SnackBar(
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content: Text('Файл сессии успешно сохранен'),
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backgroundColor: Colors.green,
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),
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);
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} else if (mounted) {
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messenger.showSnackBar(
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const SnackBar(content: Text('Сохранение файла было отменено.')),
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);
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}
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} catch (e) {
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messenger.showSnackBar(
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SnackBar(
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backgroundColor: Colors.red,
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content: Text('Не удалось экспортировать сессию: $e'),
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),
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);
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} finally {
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if (mounted) {
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setState(() => _isExporting = false);
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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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_passwordController.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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final colors = Theme.of(context).colorScheme;
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final textTheme = Theme.of(context).textTheme;
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return Scaffold(
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appBar: AppBar(title: const Text('Экспорт сессии')),
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body: SingleChildScrollView(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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Center(
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child: CircleAvatar(
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radius: 40,
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backgroundColor: colors.primaryContainer,
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child: Icon(
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Icons.upload_file_outlined,
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size: 40,
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color: colors.onPrimaryContainer,
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),
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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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'Резервная копия сессии',
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textAlign: TextAlign.center,
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style: textTheme.headlineSmall?.copyWith(
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fontWeight: FontWeight.bold,
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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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'Создайте зашифрованный файл для переноса вашего аккаунта на другое устройство без повторной авторизации.',
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textAlign: TextAlign.center,
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style: textTheme.bodyLarge?.copyWith(
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color: colors.onSurfaceVariant,
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),
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),
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const SizedBox(height: 24),
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const Divider(),
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const SizedBox(height: 24),
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Text(
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'1. Защитите файл паролем',
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style: 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: 8),
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Text(
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'Настоятельно рекомендуется установить пароль для шифрования (AES-256). Без него файл будет сохранен в открытом виде.',
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style: textTheme.bodyMedium?.copyWith(
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color: colors.onSurfaceVariant,
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),
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),
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const SizedBox(height: 16),
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TextField(
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controller: _passwordController,
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obscureText: !_isPasswordVisible,
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decoration: InputDecoration(
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labelText: 'Пароль (необязательно)',
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border: const OutlineInputBorder(
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borderRadius: BorderRadius.all(Radius.circular(12)),
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),
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prefixIcon: const Icon(Icons.lock_outline),
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suffixIcon: IconButton(
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icon: Icon(
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_isPasswordVisible
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? Icons.visibility_off
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: Icons.visibility,
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),
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onPressed: () =>
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setState(() => _isPasswordVisible = !_isPasswordVisible),
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),
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),
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),
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const SizedBox(height: 24),
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Text(
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'2. Дополнительные данные',
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style: 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: 8),
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Card(
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margin: EdgeInsets.zero,
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child: CheckboxListTile(
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title: const Text('Сохранить настройки прокси'),
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subtitle: const Text(
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'Включить текущие параметры прокси в файл экспорта.',
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),
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value: _saveProxySettings,
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onChanged: (bool? value) =>
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setState(() => _saveProxySettings = value ?? false),
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controlAffinity:
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ListTileControlAffinity.leading, // Чекбокс слева
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),
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),
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const SizedBox(height: 32),
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Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: colors.errorContainer.withOpacity(0.3),
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borderRadius: BorderRadius.circular(12),
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),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Icon(
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Icons.warning_amber_rounded,
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color: colors.error,
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size: 28,
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),
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const SizedBox(width: 12),
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Expanded(
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child: Text(
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'Никогда и никому не передавайте этот файл. Он дает полный доступ к вашему аккаунту.',
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style: textTheme.bodyMedium?.copyWith(
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fontWeight: FontWeight.w500,
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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: 32),
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FilledButton.icon(
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onPressed: _isExporting ? null : _exportAndSaveSession,
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icon: _isExporting
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? Container(
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width: 24,
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height: 24,
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padding: const EdgeInsets.all(2.0),
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child: const CircularProgressIndicator(
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color: Colors.white,
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strokeWidth: 3,
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),
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)
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: const Icon(Icons.download_for_offline_outlined),
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label: Text(
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_isExporting ? 'Сохранение...' : 'Экспортировать и сохранить',
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),
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style: FilledButton.styleFrom(
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padding: const EdgeInsets.symmetric(vertical: 16),
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textStyle: const TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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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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