471 lines
15 KiB
Dart
471 lines
15 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:fl_chart/fl_chart.dart';
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import 'dart:math' as math;
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import 'package:ainoval/models/analytics_data.dart';
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import 'package:ainoval/utils/web_theme.dart';
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import 'package:ainoval/widgets/analytics/date_range_picker.dart';
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class TokenUsageChart extends StatefulWidget {
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final List<TokenUsageData> data;
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final AnalyticsViewMode viewMode;
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final Function(AnalyticsViewMode)? onViewModeChanged;
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final DateTimeRange? dateRange;
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final Function(DateTimeRange?)? onDateRangeChanged;
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const TokenUsageChart({
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super.key,
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required this.data,
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this.viewMode = AnalyticsViewMode.monthly,
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this.onViewModeChanged,
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this.dateRange,
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this.onDateRangeChanged,
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});
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@override
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State<TokenUsageChart> createState() => _TokenUsageChartState();
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}
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class _TokenUsageChartState extends State<TokenUsageChart> {
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int touchedIndex = -1;
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List<TokenUsageData> get _sortedData {
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final List<TokenUsageData> copy = List<TokenUsageData>.from(widget.data);
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copy.sort((a, b) {
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final DateTime? da = _parseDate(a.date);
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final DateTime? db = _parseDate(b.date);
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if (da == null && db == null) return 0;
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if (da == null) return -1;
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if (db == null) return 1;
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return da.compareTo(db);
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});
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return copy;
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}
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DateTime? _parseDate(String raw) {
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final DateTime? direct = DateTime.tryParse(raw);
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if (direct != null) return DateTime(direct.year, direct.month, direct.day);
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if (RegExp(r'^\d{1,2}-\d{1,2}$').hasMatch(raw)) {
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final parts = raw.split('-');
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final m = int.tryParse(parts[0]) ?? 1;
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final d = int.tryParse(parts[1]) ?? 1;
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final now = DateTime.now();
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return DateTime(now.year, m, d);
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}
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return null;
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}
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@override
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Widget build(BuildContext context) {
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return Column(
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children: [
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_buildControls(),
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const SizedBox(height: 24),
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_buildChart(),
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const SizedBox(height: 24),
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_buildLegend(),
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],
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);
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}
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Widget _buildControls() {
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return Row(
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children: [
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
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decoration: BoxDecoration(
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color: WebTheme.getCardColor(context),
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borderRadius: BorderRadius.circular(8),
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border: Border.all(
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color: WebTheme.getBorderColor(context).withOpacity(0.5),
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),
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),
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child: Text(
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'Token 使用趋势',
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style: TextStyle(
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fontSize: 12,
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fontWeight: FontWeight.w500,
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color: WebTheme.getSecondaryTextColor(context),
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),
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),
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),
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const Spacer(),
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_buildViewModeButtons(),
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const SizedBox(width: 16),
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if (widget.viewMode == AnalyticsViewMode.range)
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AnalyticsDateRangePicker(
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dateRange: widget.dateRange,
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onDateRangeChanged: widget.onDateRangeChanged,
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),
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],
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);
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}
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Widget _buildViewModeButtons() {
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return Row(
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children: AnalyticsViewMode.values.map((mode) {
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final isSelected = widget.viewMode == mode;
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return Padding(
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padding: const EdgeInsets.only(right: 8),
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child: InkWell(
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onTap: () => widget.onViewModeChanged?.call(mode),
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borderRadius: BorderRadius.circular(6),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
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decoration: BoxDecoration(
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color: isSelected
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? Theme.of(context).primaryColor
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: Colors.transparent,
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borderRadius: BorderRadius.circular(6),
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border: Border.all(
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color: isSelected
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? Theme.of(context).primaryColor
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: WebTheme.getBorderColor(context),
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),
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),
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child: Text(
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mode.displayName,
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style: TextStyle(
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fontSize: 12,
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fontWeight: FontWeight.w500,
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color: isSelected
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? Colors.white
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: WebTheme.getTextColor(context),
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),
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),
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),
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),
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);
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}).toList(),
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);
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}
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Widget _buildChart() {
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if (widget.data.isEmpty) {
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return Container(
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height: 320,
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alignment: Alignment.center,
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child: Text(
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'暂无数据',
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style: TextStyle(
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color: WebTheme.getSecondaryTextColor(context),
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),
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),
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);
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}
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final double maxY = _getMaxY();
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final double yInterval = _getNiceGridInterval(maxY);
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final double xInterval = _computeXLabelInterval(_sortedData.length).toDouble();
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return Container(
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height: 320,
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padding: const EdgeInsets.all(16),
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child: LineChart(
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LineChartData(
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gridData: FlGridData(
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show: true,
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drawVerticalLine: false,
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horizontalInterval: yInterval,
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getDrawingHorizontalLine: (value) => FlLine(
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color: WebTheme.getBorderColor(context).withOpacity(0.3),
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strokeWidth: 1,
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dashArray: [3, 3],
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),
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),
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titlesData: FlTitlesData(
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show: true,
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rightTitles: const AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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topTitles: const AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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bottomTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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reservedSize: 30,
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interval: xInterval,
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getTitlesWidget: (value, meta) {
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final index = value.toInt();
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if (index >= 0 && index < _sortedData.length) {
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final date = _sortedData[index].date;
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final label = _formatXAxisLabel(widget.viewMode, date);
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return Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child: Text(
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label,
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style: TextStyle(
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color: WebTheme.getSecondaryTextColor(context),
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fontSize: 12,
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),
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),
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);
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}
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return const Text('');
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},
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),
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),
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leftTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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interval: yInterval,
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reservedSize: 50,
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getTitlesWidget: (value, meta) {
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return Text(
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_formatYAxisLabel(value),
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style: TextStyle(
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color: WebTheme.getSecondaryTextColor(context),
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fontSize: 12,
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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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borderData: FlBorderData(show: false),
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minX: 0,
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maxX: (_sortedData.length - 1).toDouble(),
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minY: 0,
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maxY: maxY,
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lineBarsData: [
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// 输入Token线
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LineChartBarData(
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spots: _getInputSpots(),
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isCurved: true,
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color: const Color(0xFF3B82F6),
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barWidth: 3,
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isStrokeCapRound: true,
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dotData: const FlDotData(show: false),
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belowBarData: BarAreaData(
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show: true,
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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const Color(0xFF3B82F6).withOpacity(0.3),
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const Color(0xFF3B82F6).withOpacity(0.0),
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],
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),
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),
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),
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// 输出Token线
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LineChartBarData(
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spots: _getOutputSpots(),
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isCurved: true,
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color: const Color(0xFF8B5CF6),
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barWidth: 3,
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isStrokeCapRound: true,
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dotData: const FlDotData(show: false),
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belowBarData: BarAreaData(
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show: true,
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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const Color(0xFF8B5CF6).withOpacity(0.3),
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const Color(0xFF8B5CF6).withOpacity(0.0),
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],
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),
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),
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),
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],
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lineTouchData: LineTouchData(
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enabled: true,
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touchTooltipData: LineTouchTooltipData(
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getTooltipColor: (touchedSpot) => WebTheme.getCardColor(context),
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getTooltipItems: (touchedSpots) {
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return touchedSpots.map((spot) {
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final dataIndex = spot.x.toInt();
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if (dataIndex >= 0 && dataIndex < _sortedData.length) {
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final data = _sortedData[dataIndex];
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return LineTooltipItem(
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'${data.date}\n输入: ${data.inputTokens.toString().replaceAllMapped(RegExp(r'(\d)(?=(\d{3})+(?!\d))'), (match) => '${match[1]},')} tokens\n输出: ${data.outputTokens.toString().replaceAllMapped(RegExp(r'(\d)(?=(\d{3})+(?!\d))'), (match) => '${match[1]},')} tokens',
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TextStyle(
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color: WebTheme.getTextColor(context),
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fontWeight: FontWeight.w600,
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fontSize: 12,
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),
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);
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}
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return null;
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}).where((item) => item != null).cast<LineTooltipItem>().toList();
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},
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),
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touchCallback: (FlTouchEvent event, LineTouchResponse? response) {
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setState(() {
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if (response == null || response.lineBarSpots == null) {
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touchedIndex = -1;
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} else {
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touchedIndex = response.lineBarSpots!.first.x.toInt();
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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 _buildLegend() {
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final List<TokenUsageData> dataList = _sortedData;
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final currentData = dataList.isNotEmpty ? dataList.last : null;
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return Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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_buildLegendItem(
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color: const Color(0xFF3B82F6),
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label: '输入Token',
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value: currentData != null ? '${(currentData.inputTokens / 1000).toStringAsFixed(0)}K' : '0K',
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),
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const SizedBox(width: 32),
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_buildLegendItem(
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color: const Color(0xFF8B5CF6),
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label: '输出Token',
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value: currentData != null ? '${(currentData.outputTokens / 1000).toStringAsFixed(0)}K' : '0K',
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),
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const SizedBox(width: 32),
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_buildLegendItem(
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color: Theme.of(context).primaryColor,
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label: '总计',
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value: currentData != null ? '${(currentData.totalTokens / 1000).toStringAsFixed(0)}K' : '0K',
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),
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],
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);
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}
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Widget _buildLegendItem({
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required Color color,
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required String label,
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required String value,
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}) {
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return Row(
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children: [
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Container(
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width: 12,
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height: 12,
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decoration: BoxDecoration(
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color: color,
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shape: BoxShape.circle,
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),
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),
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const SizedBox(width: 8),
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Text(
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label,
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style: TextStyle(
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fontSize: 14,
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color: WebTheme.getSecondaryTextColor(context),
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),
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),
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const SizedBox(width: 8),
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Text(
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value,
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style: TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.w600,
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color: WebTheme.getTextColor(context),
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),
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),
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],
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);
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}
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List<FlSpot> _getInputSpots() {
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final List<TokenUsageData> dataList = _sortedData;
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return dataList.asMap().entries.map((entry) {
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return FlSpot(entry.key.toDouble(), entry.value.inputTokens.toDouble());
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}).toList();
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}
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List<FlSpot> _getOutputSpots() {
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final List<TokenUsageData> dataList = _sortedData;
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return dataList.asMap().entries.map((entry) {
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return FlSpot(entry.key.toDouble(), entry.value.outputTokens.toDouble());
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}).toList();
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}
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double _getMaxY() {
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final List<TokenUsageData> dataList = _sortedData;
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if (dataList.isEmpty) return 100000;
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final maxInput = dataList.map((d) => d.inputTokens).reduce((a, b) => a > b ? a : b);
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final maxOutput = dataList.map((d) => d.outputTokens).reduce((a, b) => a > b ? a : b);
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final max = maxInput > maxOutput ? maxInput : maxOutput;
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// 添加20%的padding，并保证最小正数上限，避免全零导致maxY=0
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final withPadding = (max * 1.2).ceilToDouble();
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return withPadding <= 0 ? 1000 : withPadding;
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}
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// 计算漂亮的网格间隔（1/2/5 x 10^k）
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double _getNiceGridInterval(double maxY) {
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final double roughStep = (maxY <= 0 ? 1000.0 : maxY) / 5.0;
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final double magnitude = math.pow(10, (math.log(roughStep) / math.ln10).floor()).toDouble();
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final double residual = roughStep / magnitude;
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double nice;
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if (residual >= 5) {
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nice = 5;
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} else if (residual >= 2) {
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nice = 2;
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} else {
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nice = 1;
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}
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return nice * magnitude;
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}
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// 控制底部x轴标签密度，避免挤在一起
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int _computeXLabelInterval(int length) {
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if (length <= 10) return 1;
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if (length <= 20) return 2;
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if (length <= 40) return 4;
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return (length / 10).ceil();
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}
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String _formatYAxisLabel(double value) {
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final double absVal = value.abs();
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if (absVal >= 1000000) {
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return '${(value / 1000000).toStringAsFixed(1)}M';
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}
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if (absVal >= 1000) {
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return '${(value / 1000).toStringAsFixed(0)}K';
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}
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return value.toInt().toString();
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}
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String _formatXAxisLabel(AnalyticsViewMode mode, String raw) {
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switch (mode) {
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case AnalyticsViewMode.monthly:
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// 期望显示 MM
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final parts = raw.split('-');
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if (parts.length >= 2) {
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return parts[1];
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}
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return raw;
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case AnalyticsViewMode.daily:
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case AnalyticsViewMode.range:
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case AnalyticsViewMode.cumulative:
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// 期望显示 MM-dd
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// 支持 'yyyy-MM-dd' / 'yyyy-MM' / 'MM-dd'
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if (RegExp(r'^\d{4}-\d{1,2}-\d{1,2}$').hasMatch(raw)) {
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return raw.substring(raw.length - 5);
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}
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if (RegExp(r'^\d{4}-\d{1,2}$').hasMatch(raw)) {
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final parts = raw.split('-');
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return '${parts[1].padLeft(2, '0')}-01';
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}
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if (RegExp(r'^\d{1,2}-\d{1,2}$').hasMatch(raw)) {
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final parts = raw.split('-');
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return '${parts[0].padLeft(2, '0')}-${parts[1].padLeft(2, '0')}';
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}
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final parts2 = raw.split('-');
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if (parts2.length >= 3) {
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return '${parts2[1]}-${parts2[2].padLeft(2, '0')}';
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}
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return raw;
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}
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}
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}
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