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torrent downloads

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Erno
2025-07-19 20:50:26 +03:00
parent 4ea75db105
commit de26fd3fc9
10 changed files with 1303 additions and 38 deletions
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414
lib/presentation/screens/torrent_file_selector/torrent_file_selector_screen.dart Normal file
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@@ -0,0 +1,414 @@
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import '../../../data/services/torrent_platform_service.dart';
class TorrentFileSelectorScreen extends StatefulWidget {
final String magnetLink;
final String torrentTitle;
const TorrentFileSelectorScreen({
super.key,
required this.magnetLink,
required this.torrentTitle,
});
@override
State<TorrentFileSelectorScreen> createState() => _TorrentFileSelectorScreenState();
}
class _TorrentFileSelectorScreenState extends State<TorrentFileSelectorScreen> {
TorrentMetadata? _metadata;
List<TorrentFileInfo> _files = [];
bool _isLoading = true;
String? _error;
bool _isDownloading = false;
bool _selectAll = false;
@override
void initState() {
super.initState();
_loadTorrentMetadata();
}
Future<void> _loadTorrentMetadata() async {
setState(() {
_isLoading = true;
_error = null;
});
try {
final metadata = await TorrentPlatformService.getTorrentMetadata(widget.magnetLink);
setState(() {
_metadata = metadata;
_files = metadata.files.map((file) => file.copyWith(selected: false)).toList();
_isLoading = false;
});
} catch (e) {
setState(() {
_error = e.toString();
_isLoading = false;
});
}
}
void _toggleFileSelection(int index) {
setState(() {
_files[index] = _files[index].copyWith(selected: !_files[index].selected);
_updateSelectAllState();
});
}
void _toggleSelectAll() {
setState(() {
_selectAll = !_selectAll;
_files = _files.map((file) => file.copyWith(selected: _selectAll)).toList();
});
}
void _updateSelectAllState() {
final selectedCount = _files.where((file) => file.selected).length;
_selectAll = selectedCount == _files.length;
}
Future<void> _startDownload() async {
final selectedFiles = <int>[];
for (int i = 0; i < _files.length; i++) {
if (_files[i].selected) {
selectedFiles.add(i);
}
}
if (selectedFiles.isEmpty) {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('Выберите хотя бы один файл для скачивания'),
backgroundColor: Colors.orange,
),
);
return;
}
setState(() {
_isDownloading = true;
});
try {
final infoHash = await TorrentPlatformService.startDownload(
magnetLink: widget.magnetLink,
selectedFiles: selectedFiles,
);
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Скачивание начато! ID: ${infoHash.substring(0, 8)}...'),
backgroundColor: Colors.green,
),
);
Navigator.of(context).pop();
}
} catch (e) {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Ошибка скачивания: $e'),
backgroundColor: Colors.red,
),
);
}
} finally {
if (mounted) {
setState(() {
_isDownloading = false;
});
}
}
}
String _formatFileSize(int bytes) {
if (bytes < 1024) return '$bytes B';
if (bytes < 1024 * 1024) return '${(bytes / 1024).toStringAsFixed(1)} KB';
if (bytes < 1024 * 1024 * 1024) return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
return '${(bytes / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Выбор файлов'),
backgroundColor: Theme.of(context).colorScheme.surface,
elevation: 0,
scrolledUnderElevation: 1,
actions: [
if (!_isLoading && _files.isNotEmpty)
TextButton(
onPressed: _toggleSelectAll,
child: Text(_selectAll ? 'Снять все' : 'Выбрать все'),
),
],
),
body: Column(
children: [
// Header with torrent info
_buildTorrentHeader(),
// Content
Expanded(
child: _buildContent(),
),
// Download button
if (!_isLoading && _files.isNotEmpty) _buildDownloadButton(),
],
),
);
}
Widget _buildTorrentHeader() {
return Container(
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.surfaceVariant.withOpacity(0.3),
border: Border(
bottom: BorderSide(
color: Theme.of(context).colorScheme.outline.withOpacity(0.2),
),
),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
Icon(
Icons.folder_zip,
size: 24,
color: Theme.of(context).colorScheme.primary,
),
const SizedBox(width: 12),
Expanded(
child: Text(
widget.torrentTitle,
style: Theme.of(context).textTheme.titleMedium?.copyWith(
fontWeight: FontWeight.bold,
),
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
],
),
if (_metadata != null) ...[
const SizedBox(height: 8),
Text(
'Общий размер: ${_formatFileSize(_metadata!.totalSize)} • Файлов: ${_metadata!.files.length}',
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
],
],
),
);
}
Widget _buildContent() {
if (_isLoading) {
return const Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
CircularProgressIndicator(),
SizedBox(height: 16),
Text('Получение информации о торренте...'),
],
),
);
}
if (_error != null) {
return Center(
child: Padding(
padding: const EdgeInsets.all(24.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
Icons.error_outline,
size: 64,
color: Theme.of(context).colorScheme.error,
),
const SizedBox(height: 16),
SelectableText.rich(
TextSpan(
children: [
TextSpan(
text: 'Ошибка загрузки метаданных\n',
style: Theme.of(context).textTheme.titleMedium?.copyWith(
color: Theme.of(context).colorScheme.error,
),
),
TextSpan(
text: _error!,
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.error,
),
),
],
),
textAlign: TextAlign.center,
),
const SizedBox(height: 24),
FilledButton(
onPressed: _loadTorrentMetadata,
child: const Text('Повторить'),
),
],
),
),
);
}
if (_files.isEmpty) {
return const Center(
child: Text('Файлы не найдены'),
);
}
return ListView.builder(
padding: const EdgeInsets.all(16),
itemCount: _files.length,
itemBuilder: (context, index) {
final file = _files[index];
final isDirectory = file.path.contains('/');
return Card(
margin: const EdgeInsets.only(bottom: 8),
child: CheckboxListTile(
value: file.selected,
onChanged: (_) => _toggleFileSelection(index),
title: Text(
file.path.split('/').last,
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
fontWeight: FontWeight.w500,
),
),
subtitle: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
if (isDirectory) ...[
Text(
file.path.substring(0, file.path.lastIndexOf('/')),
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
const SizedBox(height: 4),
],
Text(
_formatFileSize(file.size),
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Theme.of(context).colorScheme.primary,
fontWeight: FontWeight.w500,
),
),
],
),
secondary: Icon(
_getFileIcon(file.path),
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
controlAffinity: ListTileControlAffinity.leading,
),
);
},
);
}
Widget _buildDownloadButton() {
final selectedCount = _files.where((file) => file.selected).length;
final selectedSize = _files
.where((file) => file.selected)
.fold<int>(0, (sum, file) => sum + file.size);
return Container(
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.surface,
boxShadow: [
BoxShadow(
color: Theme.of(context).colorScheme.shadow.withOpacity(0.1),
blurRadius: 8,
offset: const Offset(0, -2),
),
],
),
child: SafeArea(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
if (selectedCount > 0) ...[
Text(
'Выбрано: $selectedCount файл(ов) • ${_formatFileSize(selectedSize)}',
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
const SizedBox(height: 12),
],
SizedBox(
width: double.infinity,
child: FilledButton.icon(
onPressed: _isDownloading ? null : _startDownload,
icon: _isDownloading
? const SizedBox(
width: 16,
height: 16,
child: CircularProgressIndicator(strokeWidth: 2),
)
: const Icon(Icons.download),
label: Text(_isDownloading ? 'Начинаем скачивание...' : 'Скачать выбранные'),
style: FilledButton.styleFrom(
padding: const EdgeInsets.symmetric(vertical: 16),
),
),
),
],
),
),
);
}
IconData _getFileIcon(String path) {
final extension = path.split('.').last.toLowerCase();
switch (extension) {
case 'mp4':
case 'mkv':
case 'avi':
case 'mov':
case 'wmv':
return Icons.movie;
case 'mp3':
case 'wav':
case 'flac':
case 'aac':
return Icons.music_note;
case 'jpg':
case 'jpeg':
case 'png':
case 'gif':
return Icons.image;
case 'txt':
case 'nfo':
return Icons.description;
case 'srt':
case 'sub':
case 'ass':
return Icons.subtitles;
default:
return Icons.insert_drive_file;
}
}
}

69
lib/presentation/screens/torrent_selector/torrent_selector_screen.dart
View File

@@ -5,6 +5,7 @@ import '../../../data/models/torrent.dart';
import '../../../data/services/torrent_service.dart';
import '../../cubits/torrent/torrent_cubit.dart';
import '../../cubits/torrent/torrent_state.dart';
import '../torrent_file_selector/torrent_file_selector_screen.dart';
class TorrentSelectorScreen extends StatefulWidget {
final String imdbId;
@@ -338,7 +339,6 @@ class _TorrentSelectorScreenState extends State<TorrentSelectorScreen> {
final title = torrent.title ?? torrent.name ?? 'Неизвестная раздача';
final quality = torrent.quality;
final seeders = torrent.seeders;
final sizeGb = torrent.sizeGb;
final isSelected = _selectedMagnet == torrent.magnet;
return Card(
@@ -406,7 +406,7 @@ class _TorrentSelectorScreenState extends State<TorrentSelectorScreen> {
),
const SizedBox(width: 16),
],
if (sizeGb != null) ...[
if (torrent.size != null) ...[
Icon(
Icons.storage,
size: 18,
@@ -414,7 +414,7 @@ class _TorrentSelectorScreenState extends State<TorrentSelectorScreen> {
),
const SizedBox(width: 4),
Text(
'${sizeGb.toStringAsFixed(1)} GB',
_formatFileSize(torrent.size),
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
fontWeight: FontWeight.w500,
@@ -576,16 +576,30 @@ class _TorrentSelectorScreenState extends State<TorrentSelectorScreen> {
),
),
const SizedBox(height: 16),
SizedBox(
width: double.infinity,
child: FilledButton.icon(
onPressed: _copyToClipboard,
icon: Icon(_isCopied ? Icons.check : Icons.copy),
label: Text(_isCopied ? 'Скопировано!' : 'Копировать magnet-ссылку'),
style: FilledButton.styleFrom(
padding: const EdgeInsets.symmetric(vertical: 16),
Row(
children: [
Expanded(
child: OutlinedButton.icon(
onPressed: _copyToClipboard,
icon: Icon(_isCopied ? Icons.check : Icons.copy, size: 20),
label: Text(_isCopied ? 'Скопировано!' : 'Копировать'),
style: OutlinedButton.styleFrom(
padding: const EdgeInsets.symmetric(vertical: 16),
),
),
),
),
const SizedBox(width: 12),
Expanded(
child: FilledButton.icon(
onPressed: _openFileSelector,
icon: const Icon(Icons.download, size: 20),
label: const Text('Скачать'),
style: FilledButton.styleFrom(
padding: const EdgeInsets.symmetric(vertical: 16),
),
),
),
],
),
],
),
@@ -593,6 +607,37 @@ class _TorrentSelectorScreenState extends State<TorrentSelectorScreen> {
);
}
String _formatFileSize(int? sizeInBytes) {
if (sizeInBytes == null || sizeInBytes == 0) return 'Неизвестно';
const int kb = 1024;
const int mb = kb * 1024;
const int gb = mb * 1024;
if (sizeInBytes >= gb) {
return '${(sizeInBytes / gb).toStringAsFixed(1)} GB';
} else if (sizeInBytes >= mb) {
return '${(sizeInBytes / mb).toStringAsFixed(0)} MB';
} else if (sizeInBytes >= kb) {
return '${(sizeInBytes / kb).toStringAsFixed(0)} KB';
} else {
return '$sizeInBytes B';
}
}
void _openFileSelector() {
if (_selectedMagnet != null) {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => TorrentFileSelectorScreen(
magnetLink: _selectedMagnet!,
torrentTitle: widget.title,
),
),
);
}
}
void _copyToClipboard() {
if (_selectedMagnet != null) {
Clipboard.setData(ClipboardData(text: _selectedMagnet!));