generated from dellevin/template
基本功能完善
This commit is contained in:
DelLevin-Home
312
lib/pages/backup_page.dart
Normal file
312
lib/pages/backup_page.dart
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@@ -0,0 +1,312 @@
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import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../providers/app_provider.dart';
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import '../utils/backup_service.dart';
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/// 数据备份页面
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class BackupPage extends StatefulWidget {
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const BackupPage({super.key});
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@override
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State<BackupPage> createState() => _BackupPageState();
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}
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class _BackupPageState extends State<BackupPage> {
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bool _isExporting = false;
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bool _isImporting = false;
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.white,
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appBar: AppBar(
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title: const Text('数据备份'),
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),
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body: ListView(
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padding: const EdgeInsets.all(24),
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children: [
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// 导出数据
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_buildSection(
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title: '导出数据',
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description: '将所有数据导出为 JSON 文件，可用于备份或迁移到其他设备',
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icon: Icons.upload_outlined,
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buttonText: '导出',
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isLoading: _isExporting,
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onTap: _exportData,
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),
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const SizedBox(height: 32),
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// 导入数据
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_buildSection(
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title: '导入数据',
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description: '从备份文件导入数据，将覆盖当前所有数据',
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icon: Icons.download_outlined,
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buttonText: '导入',
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isLoading: _isImporting,
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onTap: _importData,
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isDestructive: true,
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),
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const SizedBox(height: 48),
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// 说明
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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: const Color(0xFFF5F5F5),
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border: Border.all(color: const Color(0xFFE5E5E5)),
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),
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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(
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Icons.info_outline,
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size: 16,
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color: const Color(0xFF666666),
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),
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const SizedBox(width: 8),
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Text(
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'使用说明',
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style: TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w500,
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color: const Color(0xFF666666),
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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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Text(
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'1. 导出数据会生成一个 .zip 文件，包含所有数据和图片\n'
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'2. 选择保存路径后，可以通过微信、邮件等方式发送备份文件\n'
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'3. 在新设备上选择导入数据，选择备份文件即可恢复\n'
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'4. 导入数据会完全覆盖当前设备的数据，请谨慎操作',
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style: TextStyle(
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fontSize: 13,
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color: const Color(0xFF999999),
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height: 1.6,
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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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Widget _buildSection({
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required String title,
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required String description,
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required IconData icon,
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required String buttonText,
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required bool isLoading,
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required VoidCallback onTap,
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bool isDestructive = false,
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}) {
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return Container(
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padding: const EdgeInsets.all(24),
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decoration: BoxDecoration(
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border: Border.all(color: const Color(0xFFE5E5E5)),
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),
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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(
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icon,
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size: 24,
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color: isDestructive ? Colors.red : const Color(0xFF1A1A1A),
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),
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const SizedBox(width: 12),
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Text(
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title,
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style: const TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w500,
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color: Color(0xFF1A1A1A),
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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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Text(
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description,
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style: const TextStyle(
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fontSize: 14,
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color: Color(0xFF666666),
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height: 1.5,
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),
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),
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const SizedBox(height: 20),
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SizedBox(
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width: double.infinity,
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child: OutlinedButton(
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onPressed: isLoading ? null : onTap,
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style: OutlinedButton.styleFrom(
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foregroundColor: isDestructive ? Colors.red : const Color(0xFF1A1A1A),
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side: BorderSide(
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color: isDestructive ? Colors.red : const Color(0xFF1A1A1A),
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),
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
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padding: const EdgeInsets.symmetric(vertical: 12),
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),
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child: isLoading
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? 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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valueColor: AlwaysStoppedAnimation(
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isDestructive ? Colors.red : const Color(0xFF1A1A1A),
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),
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),
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)
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: Text(buttonText),
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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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/// 导出数据
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Future<void> _exportData() async {
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setState(() => _isExporting = true);
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try {
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final result = await BackupService.instance.exportDataWithImages();
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if (!mounted) return;
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if (result.cancelled) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('已取消导出')),
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);
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} else if (result.success) {
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// 显示导出成功信息
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showDialog(
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context: context,
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builder: (context) => AlertDialog(
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backgroundColor: Colors.white,
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elevation: 0,
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
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title: const Text('导出成功'),
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content: Text(
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'备份文件已保存到:\n${result.filePath}\n\n'
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'包含数据:\n'
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'• 影视: ${result.movieCount}\n'
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'• 书籍: ${result.bookCount}\n'
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'• 笔记: ${result.noteCount}\n'
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'• 图片: ${result.imageCount}',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('确定'),
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),
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],
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),
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);
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} else {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(result.errorMessage ?? '导出失败')),
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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(content: Text('导出失败: $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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/// 导入数据
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Future<void> _importData() async {
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// 显示确认对话框
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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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backgroundColor: Colors.white,
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elevation: 0,
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
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title: const Text('确认导入'),
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content: const Text(
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'导入数据将覆盖当前所有数据，此操作不可恢复。\n\n是否继续？',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context, false),
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child: const Text('取消', style: TextStyle(color: Color(0xFF666666))),
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),
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TextButton(
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onPressed: () => Navigator.pop(context, true),
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child: const Text('确认导入', style: TextStyle(color: Colors.red)),
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),
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],
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),
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);
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if (confirmed != true) return;
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setState(() => _isImporting = true);
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try {
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final result = await BackupService.instance.importData();
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if (!mounted) return;
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if (result.cancelled) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('已取消导入')),
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);
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} else if (result.success) {
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// 刷新数据
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await context.read<AppProvider>().loadMovies();
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await context.read<AppProvider>().loadBooks();
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await context.read<AppProvider>().loadNotes();
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showDialog(
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context: context,
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builder: (context) => AlertDialog(
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backgroundColor: Colors.white,
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elevation: 0,
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.zero),
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title: const Text('导入成功'),
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content: Text('成功导入数据：\n${result.statsText}'),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('确定'),
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),
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],
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),
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);
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} else {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(result.errorMessage ?? '导入失败')),
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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(content: Text('导入失败: $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(() => _isImporting = false);
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}
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}
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}
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}
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