455 lines
16 KiB
Dart
455 lines
16 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:gwid/services/cache_service.dart';
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import 'package:gwid/services/avatar_cache_service.dart';
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import 'package:gwid/services/chat_cache_service.dart';
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class CacheManagementScreen extends StatefulWidget {
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const CacheManagementScreen({super.key});
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@override
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State<CacheManagementScreen> createState() => _CacheManagementScreenState();
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}
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class _CacheManagementScreenState extends State<CacheManagementScreen> {
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Map<String, dynamic> _cacheStats = {};
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Map<String, dynamic> _avatarCacheStats = {};
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Map<String, dynamic> _chatCacheStats = {};
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bool _isLoading = true;
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@override
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void initState() {
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super.initState();
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_loadCacheStats();
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}
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Future<void> _loadCacheStats() async {
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setState(() {
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_isLoading = true;
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});
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try {
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final cacheService = CacheService();
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final avatarService = AvatarCacheService();
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final chatService = ChatCacheService();
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await cacheService.initialize();
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await chatService.initialize();
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await avatarService.initialize();
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final cacheStats = await cacheService.getCacheStats();
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final avatarStats = await avatarService.getAvatarCacheStats();
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final chatStats = await chatService.getChatCacheStats();
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if (!mounted) return;
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setState(() {
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_cacheStats = cacheStats;
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_avatarCacheStats = avatarStats;
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_chatCacheStats = chatStats;
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_isLoading = false;
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});
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} catch (e) {
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if (!mounted) return;
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setState(() {
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_isLoading = false;
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});
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('Ошибка загрузки статистики кэша: $e'),
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backgroundColor: Theme.of(context).colorScheme.error,
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),
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);
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}
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}
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Future<void> _clearAllCache() async {
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Очистить весь кэш?'),
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content: const Text(
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'Это действие удалит все кэшированные данные, включая чаты, сообщения и аватарки. '
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'Приложение будет работать медленнее до повторной загрузки данных.',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(context).pop(false),
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child: const Text('Отмена'),
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),
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FilledButton(
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onPressed: () => Navigator.of(context).pop(true),
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style: FilledButton.styleFrom(
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backgroundColor: Theme.of(context).colorScheme.error,
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foregroundColor: Theme.of(context).colorScheme.onError,
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),
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child: const Text('Очистить'),
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),
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],
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),
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);
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if (confirmed == true) {
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try {
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final cacheService = CacheService();
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final avatarService = AvatarCacheService();
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final chatService = ChatCacheService();
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await cacheService.initialize();
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await chatService.initialize();
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await avatarService.initialize();
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await cacheService.clear();
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// Небольшая задержка между операциями очистки
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await Future.delayed(const Duration(milliseconds: 100));
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await avatarService.clearAvatarCache();
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await Future.delayed(const Duration(milliseconds: 100));
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await chatService.clearAllChatCache();
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await _loadCacheStats();
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Весь кэш очищен'),
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backgroundColor: Colors.green,
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),
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);
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}
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('Ошибка очистки кэша: $e'),
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backgroundColor: Theme.of(context).colorScheme.error,
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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> _clearAvatarCache() async {
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Очистить кэш аватарок?'),
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content: const Text(
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'Это действие удалит все кэшированные аватарки. '
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'Они будут загружены заново при следующем просмотре.',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(context).pop(false),
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child: const Text('Отмена'),
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),
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FilledButton(
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onPressed: () => Navigator.of(context).pop(true),
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child: const Text('Очистить'),
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),
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],
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),
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);
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if (confirmed == true) {
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try {
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final avatarService = AvatarCacheService();
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await avatarService.initialize();
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await avatarService.clearAvatarCache();
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// Небольшая задержка перед загрузкой статистики
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await Future.delayed(const Duration(milliseconds: 50));
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await _loadCacheStats();
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Кэш аватарок очищен'),
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backgroundColor: Colors.green,
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),
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);
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}
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('Ошибка очистки кэша аватарок: $e'),
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backgroundColor: Theme.of(context).colorScheme.error,
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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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Widget _buildStatCard(
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String title,
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String value,
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IconData icon,
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Color color,
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) {
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return Card(
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Column(
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children: [
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Icon(icon, color: color, size: 32),
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const SizedBox(height: 8),
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Text(
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title,
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style: Theme.of(context).textTheme.titleSmall,
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 4),
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Text(
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value,
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style: Theme.of(context).textTheme.headlineSmall?.copyWith(
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color: color,
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fontWeight: FontWeight.bold,
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),
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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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}
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Widget _buildCacheSection(String title, Map<String, dynamic>? data) {
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if (data == null || data.isEmpty) {
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return const SizedBox.shrink();
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}
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return Card(
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child: Padding(
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padding: const EdgeInsets.all(16),
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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: Theme.of(
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context,
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).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
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),
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const SizedBox(height: 12),
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...data.entries.map(
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(entry) => Padding(
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padding: const EdgeInsets.symmetric(vertical: 4),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(entry.key),
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Text(
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entry.value.toString(),
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style: const TextStyle(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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),
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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 colors = Theme.of(context).colorScheme;
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return Scaffold(
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appBar: AppBar(
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title: const Text("Управление кэшем"),
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actions: [
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IconButton(
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onPressed: _loadCacheStats,
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icon: const Icon(Icons.refresh),
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),
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],
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),
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body: _isLoading
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? const Center(child: CircularProgressIndicator())
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: ListView(
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padding: const EdgeInsets.all(16),
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children: [
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Text(
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"Общая статистика",
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style: TextStyle(
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color: colors.primary,
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fontWeight: FontWeight.bold,
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fontSize: 18,
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),
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),
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const SizedBox(height: 12),
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GridView.count(
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crossAxisCount: 2,
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shrinkWrap: true,
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physics: const NeverScrollableScrollPhysics(),
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childAspectRatio: 1.2,
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crossAxisSpacing: 12,
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mainAxisSpacing: 12,
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children: [
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_buildStatCard(
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"Чаты в кэше",
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_chatCacheStats['cachedChats']?.toString() ?? "0",
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Icons.chat,
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colors.primary,
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),
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_buildStatCard(
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"Контакты в кэше",
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_chatCacheStats['cachedContacts']?.toString() ?? "0",
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Icons.contacts,
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colors.secondary,
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),
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_buildStatCard(
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"Аватарки в памяти",
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_avatarCacheStats['memoryImages']?.toString() ?? "0",
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Icons.person,
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colors.tertiary,
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),
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_buildStatCard(
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"Размер кэша",
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"${_avatarCacheStats['diskSizeMB'] ?? "0"} МБ",
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Icons.storage,
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colors.error,
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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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"Детальная статистика",
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style: TextStyle(
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color: colors.primary,
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fontWeight: FontWeight.bold,
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fontSize: 18,
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),
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),
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const SizedBox(height: 12),
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_buildCacheSection("Кэш чатов", _chatCacheStats['cacheStats']),
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const SizedBox(height: 12),
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_buildCacheSection("Кэш аватарок", _avatarCacheStats),
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const SizedBox(height: 12),
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_buildCacheSection("Общий кэш", _cacheStats),
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const SizedBox(height: 12),
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_buildCacheSection("Кэш в памяти", {
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'Записей в памяти': _cacheStats['memoryEntries'] ?? 0,
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'Максимум записей': _cacheStats['maxMemorySize'] ?? 0,
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}),
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const SizedBox(height: 32),
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Text(
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"Управление кэшем",
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style: TextStyle(
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color: colors.primary,
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fontWeight: FontWeight.bold,
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fontSize: 18,
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),
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),
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const SizedBox(height: 12),
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Card(
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child: Column(
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children: [
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ListTile(
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leading: const Icon(Icons.delete_sweep),
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title: const Text("Очистить кэш аватарок"),
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subtitle: const Text(
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"Удалить все кэшированные аватарки",
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),
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trailing: const Icon(Icons.chevron_right_rounded),
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onTap: _clearAvatarCache,
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),
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const Divider(height: 1),
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ListTile(
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leading: Icon(
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Icons.delete_forever,
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color: colors.error,
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),
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title: Text(
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"Очистить весь кэш",
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style: TextStyle(color: colors.error),
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),
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subtitle: const Text("Удалить все кэшированные данные"),
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trailing: Icon(
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Icons.chevron_right_rounded,
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color: colors.error,
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),
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onTap: _clearAllCache,
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),
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],
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),
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),
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const SizedBox(height: 24),
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Icon(Icons.info_outline, color: colors.primary),
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const SizedBox(width: 8),
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Text(
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"О кэшировании",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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color: colors.primary,
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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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const Text(
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"Кэширование ускоряет работу приложения, сохраняя часто используемые данные локально. "
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"Все файлы сжимаются с помощью LZ4 для экономии места. "
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"Чаты кэшируются на 1 час, контакты на 6 часов, сообщения на 2 часа, аватарки на 7 дней.",
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),
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const SizedBox(height: 8),
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const Text(
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"Очистка кэша может замедлить работу приложения до повторной загрузки данных.",
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style: TextStyle(fontStyle: FontStyle.italic),
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),
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const SizedBox(height: 8),
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Container(
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padding: const EdgeInsets.all(8),
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decoration: BoxDecoration(
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color: colors.primary.withOpacity(0.1),
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borderRadius: BorderRadius.circular(8),
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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.compress,
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color: colors.primary,
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size: 16,
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),
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const SizedBox(width: 8),
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Text(
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"Сжатие LZ4 включено - экономия места до 70%",
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style: TextStyle(
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color: colors.primary,
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fontSize: 12,
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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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),
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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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