624 lines
19 KiB
Dart
624 lines
19 KiB
Dart
import 'dart:math' as math;
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import 'dart:async';
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import 'package:miaoji_zhang/shared/services/shanghai_time.dart';
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import 'package:flutter/material.dart';
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import 'package:miaoji_zhang/shared/api/api_client.dart';
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import 'package:miaoji_zhang/shared/api/business_api.dart';
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import 'package:miaoji_zhang/shared/services/current_ledger_store.dart';
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import 'package:miaoji_zhang/shared/theme/app_theme.dart';
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import 'package:miaoji_zhang/shared/widgets/app_controls.dart';
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import 'package:miaoji_zhang/shared/widgets/async_error_view.dart';
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import 'package:miaoji_zhang/shared/widgets/backend_status_icon.dart';
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import 'package:miaoji_zhang/shared/widgets/category_icon.dart';
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class StatsPage extends StatefulWidget {
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const StatsPage({super.key});
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@override
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State<StatsPage> createState() => _StatsPageState();
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}
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class _StatsPageState extends State<StatsPage> {
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String _period = 'month';
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DateTime _anchor = ShanghaiTime.now;
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PeriodStats? _stats;
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String? _error;
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bool _loading = true;
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int _loadRevision = 0;
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@override
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void initState() {
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super.initState();
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CurrentLedgerStore.instance.addListener(_load);
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unawaited(_load());
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}
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@override
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void dispose() {
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CurrentLedgerStore.instance.removeListener(_load);
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super.dispose();
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}
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Future<void> _load() async {
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final revision = ++_loadRevision;
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if (mounted) {
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setState(() {
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_loading = true;
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_error = null;
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});
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}
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try {
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final local = TxApi.periodStatsLocal(_period, _anchor);
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if (mounted && revision == _loadRevision) {
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setState(() => _stats = local);
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}
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} catch (error) {
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if (mounted && revision == _loadRevision) {
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setState(() => _error = apiErrorMessage(error));
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}
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}
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try {
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final remote = await TxApi.periodStatsRemote(_period, _anchor);
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if (mounted && revision == _loadRevision) {
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setState(() => _stats = remote);
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}
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} catch (_) {
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} finally {
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if (mounted && revision == _loadRevision) {
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setState(() => _loading = false);
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}
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}
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}
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void _selectPeriod(String value) {
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if (_period == value) return;
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setState(() {
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_period = value;
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_anchor = ShanghaiTime.now;
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_stats = null;
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});
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_load();
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}
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void _shift(int direction) {
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final next = switch (_period) {
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'week' => _anchor.add(Duration(days: 7 * direction)),
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'year' => DateTime(_anchor.year + direction, 1, 1),
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_ => DateTime(_anchor.year, _anchor.month + direction, 1),
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};
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if (direction > 0 && _isAfterCurrentPeriod(next)) return;
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setState(() {
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_anchor = next;
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_stats = null;
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});
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_load();
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}
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bool _isAfterCurrentPeriod(DateTime value) {
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final now = ShanghaiTime.now;
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return switch (_period) {
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'week' => value.isAfter(now),
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'year' => value.year > now.year,
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_ =>
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value.year > now.year ||
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(value.year == now.year && value.month > now.month),
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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 stats = _stats;
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return Scaffold(
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appBar: AppBar(
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title: Text('统计'),
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actions: [BackendStatusIcon(onRetry: _load)],
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),
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body: Column(
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children: [
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Padding(
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padding: const EdgeInsets.fromLTRB(16, 4, 16, 8),
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child: JzSegmentedControl<String>(
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value: _period,
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options: const [
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JzOption(value: 'week', label: '周'),
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JzOption(value: 'month', label: '月'),
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JzOption(value: 'year', label: '年'),
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],
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onChanged: _selectPeriod,
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),
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),
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Expanded(
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child: _loading && stats == null
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? Center(
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child: CircularProgressIndicator(
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color: AppTheme.primary,
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strokeWidth: 2,
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),
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)
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: stats == null && _error != null
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? AsyncErrorView(message: _error!, onRetry: _load)
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: RefreshIndicator(
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onRefresh: _load,
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child: ListView(
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physics: const AlwaysScrollableScrollPhysics(),
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padding: const EdgeInsets.fromLTRB(16, 0, 16, 24),
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children: [
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_periodNavigator(stats?.periodLabel ?? ''),
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if (_loading)
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LinearProgressIndicator(
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minHeight: 2,
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color: AppTheme.primary,
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backgroundColor: context.jz.primaryBackground,
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),
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if (_error != null) _refreshNotice(_error!),
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if (stats != null) ...[
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SizedBox(height: 10),
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_summaryCard(stats),
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SizedBox(height: 10),
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if (stats.totalExpense == 0 && stats.totalIncome == 0)
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_emptyCard()
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else ...[
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_categoryCard(stats),
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SizedBox(height: 10),
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if (stats.analysis case final analysis?)
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_analysisCard(analysis),
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SizedBox(height: 10),
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_trendCard(stats),
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if (stats.byCategory.isNotEmpty) ...[
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SizedBox(height: 10),
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_rankingCard(stats),
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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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Widget _periodNavigator(String label) {
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final nextAnchor = switch (_period) {
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'week' => _anchor.add(const Duration(days: 7)),
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'year' => DateTime(_anchor.year + 1, 1, 1),
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_ => DateTime(_anchor.year, _anchor.month + 1, 1),
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};
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return Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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IconButton(
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tooltip: '上一个周期',
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onPressed: () => _shift(-1),
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icon: Icon(Icons.chevron_left_rounded),
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),
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SizedBox(
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width: 170,
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child: Text(
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label,
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textAlign: TextAlign.center,
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style: TextStyle(fontSize: 15, fontWeight: FontWeight.w700),
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),
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),
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IconButton(
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tooltip: '下一个周期',
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onPressed: _isAfterCurrentPeriod(nextAnchor) ? null : () => _shift(1),
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icon: Icon(Icons.chevron_right_rounded),
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),
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],
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);
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}
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Widget _summaryCard(PeriodStats stats) {
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return Card(
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 17),
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child: Row(
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children: [
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_summaryValue('支出', stats.totalExpense, AppTheme.red),
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_divider(),
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_summaryValue('收入', stats.totalIncome, AppTheme.primaryDeep),
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_divider(),
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_summaryValue(
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'结余',
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stats.balance,
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stats.balance < 0 ? AppTheme.red : context.jz.text,
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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 _summaryValue(String label, double amount, Color color) {
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return Expanded(
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child: Column(
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children: [
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Text(
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label,
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style: TextStyle(fontSize: 10.5, color: context.jz.text3),
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),
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SizedBox(height: 5),
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FittedBox(
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fit: BoxFit.scaleDown,
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child: Text(
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'¥${amount.toStringAsFixed(2)}',
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style: TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.w800,
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color: color,
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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 _divider() => Container(width: 1, height: 34, color: context.jz.line);
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Widget _emptyCard() {
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return Card(
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child: Padding(
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padding: EdgeInsets.symmetric(vertical: 48),
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child: Center(
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child: Text(
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'这个周期还没有账单记录',
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style: TextStyle(fontSize: 13, color: context.jz.text3),
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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 _categoryCard(PeriodStats stats) {
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return Card(
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child: Padding(
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padding: const EdgeInsets.fromLTRB(16, 18, 16, 16),
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child: Column(
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children: [
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SizedBox(
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height: 178,
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child: _CategoryDonut(
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categories: stats.byCategory,
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total: stats.totalExpense,
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),
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),
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SizedBox(height: 12),
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Wrap(
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spacing: 12,
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runSpacing: 8,
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children: stats.byCategory.take(8).map((category) {
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final color = categoryColorMeta(category.colorKey).foreground;
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return Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Container(
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width: 9,
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height: 9,
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decoration: BoxDecoration(
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color: color,
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borderRadius: BorderRadius.circular(3),
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),
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),
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SizedBox(width: 5),
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Text(
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'${category.name} ${category.percent.toStringAsFixed(0)}%',
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style: TextStyle(fontSize: 10.5, color: context.jz.text2),
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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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),
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),
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);
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}
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Widget _analysisCard(String text) {
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return Container(
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padding: const EdgeInsets.all(14),
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decoration: BoxDecoration(
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color: context.jz.aiBackground,
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borderRadius: BorderRadius.circular(14),
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border: Border.all(color: AppTheme.ai.withValues(alpha: 0.12)),
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),
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child: Row(
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children: [
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Container(
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width: 30,
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height: 30,
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decoration: BoxDecoration(
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color: context.jz.card,
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borderRadius: BorderRadius.circular(10),
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),
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child: Icon(
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Icons.auto_awesome_rounded,
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size: 16,
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color: AppTheme.ai,
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),
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),
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SizedBox(width: 10),
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Expanded(
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child: Text(
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text,
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style: TextStyle(
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fontSize: 12,
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color: context.jz.text2,
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height: 1.5,
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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 _trendCard(PeriodStats stats) {
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final title = switch (_period) {
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'week' => '每日支出趋势',
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'year' => '每月支出趋势',
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_ => '每日支出趋势',
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};
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return Card(
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child: Padding(
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padding: const EdgeInsets.fromLTRB(16, 16, 16, 14),
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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: TextStyle(fontSize: 13, fontWeight: FontWeight.w700),
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),
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SizedBox(height: 16),
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SizedBox(
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height: 116,
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child: _TrendBars(points: stats.trend, period: _period),
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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 _rankingCard(PeriodStats stats) {
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final maxAmount = stats.byCategory.first.amount;
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return Card(
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child: Padding(
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padding: const EdgeInsets.fromLTRB(14, 8, 14, 8),
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child: Column(
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children: stats.byCategory.take(8).map((category) {
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final color = categoryColorMeta(category.colorKey).foreground;
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 8),
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child: Row(
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children: [
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CategoryIconBox(
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iconKey: category.iconKey,
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colorKey: category.colorKey,
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size: 34,
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),
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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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Row(
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children: [
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Text(
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category.name,
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style: TextStyle(
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fontSize: 12.5,
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fontWeight: FontWeight.w600,
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),
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),
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Spacer(),
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Text(
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'¥${category.amount.toStringAsFixed(2)}',
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style: TextStyle(
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fontSize: 12.5,
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fontWeight: FontWeight.w700,
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),
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),
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],
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),
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SizedBox(height: 6),
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ClipRRect(
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borderRadius: BorderRadius.circular(3),
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child: LinearProgressIndicator(
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value: maxAmount == 0
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? 0
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: category.amount / maxAmount,
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minHeight: 4,
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backgroundColor: context.jz.background,
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color: color,
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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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}).toList(),
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),
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),
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);
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}
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Widget _refreshNotice(String message) {
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return Container(
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margin: const EdgeInsets.only(top: 8),
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 9),
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decoration: BoxDecoration(
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color: context.jz.warningBackground,
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borderRadius: BorderRadius.circular(12),
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),
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child: Row(
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children: [
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Icon(Icons.info_outline_rounded, size: 16, color: AppTheme.orange),
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SizedBox(width: 8),
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Expanded(
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child: Text(
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message,
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style: TextStyle(fontSize: 11, color: context.jz.text2),
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),
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),
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TextButton(onPressed: _load, child: Text('重试')),
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],
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),
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);
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}
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}
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class _CategoryDonut extends StatelessWidget {
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final List<CategoryStat> categories;
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final double total;
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const _CategoryDonut({required this.categories, required this.total});
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@override
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Widget build(BuildContext context) {
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return CustomPaint(
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painter: _DonutPainter(categories.take(8).toList(), context.jz.line),
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child: Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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'周期支出',
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style: TextStyle(fontSize: 10.5, color: context.jz.text3),
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),
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SizedBox(height: 3),
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Text(
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'¥${total.toStringAsFixed(0)}',
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style: TextStyle(fontSize: 20, fontWeight: FontWeight.w800),
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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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class _DonutPainter extends CustomPainter {
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final List<CategoryStat> categories;
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final Color lineColor;
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_DonutPainter(this.categories, this.lineColor);
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@override
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void paint(Canvas canvas, Size size) {
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final center = Offset(size.width / 2, size.height / 2);
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final radius = math.min(size.width, size.height) / 2 - 12;
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const strokeWidth = 22.0;
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final rect = Rect.fromCircle(center: center, radius: radius);
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canvas.drawCircle(
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center,
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radius,
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Paint()
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..color = lineColor
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..style = PaintingStyle.stroke
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..strokeWidth = strokeWidth,
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);
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final total = categories.fold<double>(0, (sum, item) => sum + item.amount);
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if (total == 0) return;
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var start = -math.pi / 2;
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for (final category in categories) {
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final sweep = category.amount / total * math.pi * 2;
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final gap = math.min(0.025, sweep / 4);
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canvas.drawArc(
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rect,
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start + gap,
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math.max(0, sweep - gap * 2),
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false,
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Paint()
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..color = categoryColorMeta(category.colorKey).foreground
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..style = PaintingStyle.stroke
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..strokeWidth = strokeWidth
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..strokeCap = StrokeCap.round,
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);
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start += sweep;
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}
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}
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@override
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bool shouldRepaint(covariant _DonutPainter oldDelegate) => true;
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}
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class _TrendBars extends StatelessWidget {
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final List<PeriodTrendPoint> points;
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final String period;
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const _TrendBars({required this.points, required this.period});
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@override
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Widget build(BuildContext context) {
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final maxValue = points.fold<double>(
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0,
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(maximum, point) => math.max(maximum, point.expense),
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);
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return Row(
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crossAxisAlignment: CrossAxisAlignment.end,
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children: points.indexed.map((entry) {
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final index = entry.$1;
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final point = entry.$2;
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final height = maxValue == 0
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? 2.0
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: math.max(2.0, point.expense / maxValue * 78).toDouble();
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final showLabel =
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period != 'month' ||
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index == 0 ||
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index == points.length - 1 ||
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(index + 1) % 5 == 0;
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return Expanded(
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child: Padding(
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|
padding: EdgeInsets.symmetric(
|
|
horizontal: period == 'month' ? 1 : 3,
|
|
),
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.end,
|
|
children: [
|
|
Tooltip(
|
|
message:
|
|
'${point.label} ¥${point.expense.toStringAsFixed(2)}',
|
|
child: Container(
|
|
height: height,
|
|
decoration: BoxDecoration(
|
|
color: point.expense == maxValue && maxValue > 0
|
|
? AppTheme.primary
|
|
: context.jz.primaryBackground,
|
|
borderRadius: const BorderRadius.vertical(
|
|
top: Radius.circular(4),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
SizedBox(height: 6),
|
|
SizedBox(
|
|
height: 14,
|
|
child: showLabel
|
|
? FittedBox(
|
|
fit: BoxFit.scaleDown,
|
|
child: Text(
|
|
point.label,
|
|
style: TextStyle(
|
|
fontSize: 9,
|
|
color: context.jz.text3,
|
|
),
|
|
),
|
|
)
|
|
: null,
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}).toList(),
|
|
);
|
|
}
|
|
}
|