first commit
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ytc1012
403
lib/screens/export_data_screen.dart
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403
lib/screens/export_data_screen.dart
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter/foundation.dart' show kIsWeb;
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import '../theme/app_theme.dart';
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import '../services/export_service.dart';
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// Web 平台需要的导入
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import 'dart:html' as html show Blob, Url, AnchorElement;
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class ExportDataScreen extends StatefulWidget {
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const ExportDataScreen({super.key});
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@override
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State<ExportDataScreen> createState() => _ExportDataScreenState();
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}
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class _ExportDataScreenState extends State<ExportDataScreen> {
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final ExportService _exportService = ExportService();
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DateTime _startDate = DateTime.now().subtract(const Duration(days: 7));
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DateTime _endDate = DateTime.now();
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bool _isExporting = false;
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Future<void> _exportCSV() async {
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setState(() {
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_isExporting = true;
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});
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try {
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final csvData = await _exportService.exportToCSV(
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startDate: _startDate,
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endDate: _endDate,
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);
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if (csvData.isEmpty || csvData.trim().isEmpty) {
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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('所选日期范围内没有数据可导出'),
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backgroundColor: AppTheme.warningColor,
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),
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);
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}
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return;
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}
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if (kIsWeb) {
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// Web 平台：下载文件
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final blob = html.Blob([csvData], 'text/csv');
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final url = html.Url.createObjectUrlFromBlob(blob);
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html.AnchorElement(href: url)
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..setAttribute('download', 'autotime_export_${DateTime.now().millisecondsSinceEpoch}.csv')
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..click();
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html.Url.revokeObjectUrl(url);
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} else {
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// 移动端：复制到剪贴板
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await Clipboard.setData(ClipboardData(text: csvData));
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}
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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(kIsWeb ? '文件已下载' : '数据已复制到剪贴板'),
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backgroundColor: AppTheme.successColor,
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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(_getExportErrorMessage(e)),
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backgroundColor: AppTheme.errorColor,
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action: SnackBarAction(
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label: '重试',
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textColor: Colors.white,
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onPressed: _exportReport,
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),
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),
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);
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}
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} finally {
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if (mounted) {
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setState(() {
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_isExporting = false;
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});
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}
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}
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}
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Future<void> _exportReport() async {
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setState(() {
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_isExporting = true;
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});
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try {
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final report = await _exportService.exportStatsReport(
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startDate: _startDate,
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endDate: _endDate,
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);
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if (report.isEmpty || report.trim().isEmpty) {
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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('所选日期范围内没有统计数据可导出'),
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backgroundColor: AppTheme.warningColor,
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),
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);
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}
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return;
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}
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if (kIsWeb) {
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// Web 平台：下载文件
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final blob = html.Blob([report], 'text/plain');
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final url = html.Url.createObjectUrlFromBlob(blob);
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html.AnchorElement(href: url)
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..setAttribute('download', 'autotime_report_${DateTime.now().millisecondsSinceEpoch}.txt')
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..click();
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html.Url.revokeObjectUrl(url);
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} else {
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// 移动端：复制到剪贴板
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await Clipboard.setData(ClipboardData(text: report));
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}
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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(kIsWeb ? '文件已下载' : '报告已复制到剪贴板'),
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backgroundColor: AppTheme.successColor,
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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(_getExportErrorMessage(e)),
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backgroundColor: AppTheme.errorColor,
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action: SnackBarAction(
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label: '重试',
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textColor: Colors.white,
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onPressed: _exportReport,
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),
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),
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);
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}
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} finally {
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if (mounted) {
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setState(() {
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_isExporting = false;
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});
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}
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}
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}
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Future<void> _exportTodayReport() async {
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setState(() {
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_isExporting = true;
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});
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try {
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final report = await _exportService.exportTodayReport();
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if (report.isEmpty || report.trim().isEmpty) {
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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('今日暂无数据可导出'),
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backgroundColor: AppTheme.warningColor,
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),
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);
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}
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return;
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}
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if (kIsWeb) {
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// Web 平台：下载文件
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final blob = html.Blob([report], 'text/plain');
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final url = html.Url.createObjectUrlFromBlob(blob);
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html.AnchorElement(href: url)
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..setAttribute('download', 'autotime_today_${DateTime.now().millisecondsSinceEpoch}.txt')
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..click();
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html.Url.revokeObjectUrl(url);
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} else {
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// 移动端：复制到剪贴板
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await Clipboard.setData(ClipboardData(text: report));
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}
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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(kIsWeb ? '文件已下载' : '今日报告已复制到剪贴板'),
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backgroundColor: AppTheme.successColor,
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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(_getExportErrorMessage(e)),
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backgroundColor: AppTheme.errorColor,
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action: SnackBarAction(
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label: '重试',
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textColor: Colors.white,
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onPressed: _exportTodayReport,
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),
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),
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);
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}
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} finally {
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if (mounted) {
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setState(() {
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_isExporting = false;
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});
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}
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}
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}
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Future<void> _selectDateRange() async {
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final DateTimeRange? picked = await showDateRangePicker(
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context: context,
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firstDate: DateTime(2020),
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lastDate: DateTime.now(),
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initialDateRange: DateTimeRange(start: _startDate, end: _endDate),
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);
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if (picked != null) {
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setState(() {
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_startDate = picked.start;
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_endDate = picked.end;
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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 theme = Theme.of(context);
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return Scaffold(
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appBar: AppBar(
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title: const Text('数据导出'),
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),
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body: SingleChildScrollView(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// 日期范围选择
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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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Text(
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'选择日期范围',
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style: theme.textTheme.titleMedium?.copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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const SizedBox(height: 16),
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Row(
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children: [
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Expanded(
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child: OutlinedButton.icon(
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onPressed: _selectDateRange,
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icon: const Icon(Icons.calendar_today),
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label: Text(
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'${_startDate.toString().split(' ')[0]} 至 ${_endDate.toString().split(' ')[0]}',
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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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const SizedBox(height: 16),
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// 导出选项
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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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Text(
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'导出选项',
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style: theme.textTheme.titleMedium?.copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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const SizedBox(height: 16),
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// CSV 导出
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_buildExportOption(
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theme,
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icon: Icons.table_chart,
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title: '导出 CSV 数据',
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subtitle: '导出原始应用使用数据（CSV 格式）',
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onTap: _exportCSV,
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),
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const SizedBox(height: 12),
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// 统计报告
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_buildExportOption(
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theme,
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icon: Icons.description,
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title: '导出统计报告',
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subtitle: '导出时间范围内的统计报告（文本格式）',
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onTap: _exportReport,
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),
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const SizedBox(height: 12),
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// 今日报告
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_buildExportOption(
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theme,
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icon: Icons.today,
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title: '导出今日报告',
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subtitle: '导出今日的详细统计报告',
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onTap: _exportTodayReport,
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),
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],
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),
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),
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),
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if (_isExporting)
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const Padding(
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padding: EdgeInsets.all(16),
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child: Center(child: CircularProgressIndicator()),
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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 _buildExportOption(
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ThemeData theme, {
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required IconData icon,
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required String title,
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required String subtitle,
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required VoidCallback onTap,
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}) {
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return InkWell(
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onTap: _isExporting ? null : onTap,
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borderRadius: BorderRadius.circular(8),
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child: Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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border: Border.all(
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color: theme.colorScheme.onSurface.withOpacity(0.1),
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),
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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(icon, color: AppTheme.primaryColor),
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const SizedBox(width: 12),
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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: theme.textTheme.bodyLarge?.copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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const SizedBox(height: 4),
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Text(
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subtitle,
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style: theme.textTheme.bodySmall?.copyWith(
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color: theme.colorScheme.onSurface.withOpacity(0.6),
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),
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),
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],
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),
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),
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const Icon(Icons.chevron_right),
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],
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),
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),
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);
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}
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String _getExportErrorMessage(Object error) {
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final errorString = error.toString().toLowerCase();
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if (errorString.contains('permission') || errorString.contains('权限')) {
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return '需要授予应用使用权限';
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} else if (errorString.contains('database') || errorString.contains('数据库')) {
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return '数据库操作失败，请稍后重试';
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} else if (errorString.contains('file') || errorString.contains('文件')) {
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return '文件操作失败，请检查存储权限';
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}
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return '导出失败，请稍后重试';
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}
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}
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