361 lines
11 KiB
Dart
361 lines
11 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import 'package:lucide_icons_flutter/lucide_icons.dart';
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import '../../../core/theme/app_theme.dart';
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import '../../../core/theme/app_spacing.dart';
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import '../../../core/theme/app_theme_extension.dart';
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import '../../../data/services/asset_service.dart';
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/// 盈虧分析頁面 - 月度盈虧日曆
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class ProfitAnalysisPage extends StatefulWidget {
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const ProfitAnalysisPage({super.key});
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@override
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State<ProfitAnalysisPage> createState() => _ProfitAnalysisPageState();
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}
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class _ProfitAnalysisPageState extends State<ProfitAnalysisPage> {
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late DateTime _currentMonth;
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Map<String, dynamic>? _profitData;
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bool _isLoading = false;
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@override
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void initState() {
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super.initState();
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_currentMonth = DateTime.now();
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WidgetsBinding.instance.addPostFrameCallback((_) => _loadProfit());
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}
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// ============================================
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// 數據加載
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// ============================================
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Future<void> _loadProfit() async {
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setState(() => _isLoading = true);
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try {
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final assetService = context.read<AssetService>();
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final response = await assetService.getDailyProfit(
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year: _currentMonth.year,
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month: _currentMonth.month,
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);
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if (mounted) {
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setState(() {
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_profitData = response.data;
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_isLoading = false;
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});
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}
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} catch (_) {
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if (mounted) setState(() => _isLoading = false);
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}
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}
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void _previousMonth() {
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setState(() {
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_currentMonth = DateTime(_currentMonth.year, _currentMonth.month - 1);
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});
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_loadProfit();
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}
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void _nextMonth() {
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setState(() {
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_currentMonth = DateTime(_currentMonth.year, _currentMonth.month + 1);
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});
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_loadProfit();
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}
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// ============================================
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// 盈虧數據解析
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// ============================================
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double? _getDayProfit(int day) {
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if (_profitData == null) return null;
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final daily = _profitData!['daily'] as Map<String, dynamic>?;
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if (daily == null) return null;
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final dateStr =
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'${_currentMonth.year}-${_currentMonth.month.toString().padLeft(2, '0')}-${day.toString().padLeft(2, '0')}';
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final value = daily[dateStr];
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if (value == null) return null;
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return (value is num) ? value.toDouble() : double.tryParse(value.toString());
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}
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double get _monthProfit {
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if (_profitData == null) return 0;
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final value = _profitData!['totalProfit'];
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if (value == null) return 0;
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return (value is num) ? value.toDouble() : double.tryParse(value.toString()) ?? 0;
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}
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// ============================================
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// 構建 UI
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// ============================================
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@override
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Widget build(BuildContext context) {
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final now = DateTime.now();
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final isCurrentMonth =
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_currentMonth.year == now.year && _currentMonth.month == now.month;
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return Scaffold(
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backgroundColor: context.colors.surface,
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appBar: AppBar(
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title: const Text('盈虧分析'),
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backgroundColor: context.colors.surface,
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elevation: 0,
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scrolledUnderElevation: 0,
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centerTitle: true,
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),
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body: SingleChildScrollView(
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padding: EdgeInsets.all(AppSpacing.lg),
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child: Container(
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padding: EdgeInsets.all(AppSpacing.lg),
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decoration: BoxDecoration(
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color: context.appColors.surfaceCard,
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borderRadius: BorderRadius.circular(AppRadius.xl),
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border: Border.all(color: context.appColors.ghostBorder),
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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// 月度盈虧摘要
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_buildSummarySection(),
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SizedBox(height: AppSpacing.md),
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// 月份導航
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_buildMonthNavigation(isCurrentMonth),
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SizedBox(height: AppSpacing.sm),
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// 星期標題
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_buildWeekdayHeaders(),
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SizedBox(height: AppSpacing.xs),
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// 日曆網格
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if (_isLoading)
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_buildLoadingIndicator()
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else
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..._buildCalendarGrid(
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now,
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isCurrentMonth,
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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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/// 月度盈虧摘要
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Widget _buildSummarySection() {
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final upColor = context.appColors.up;
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final downColor = context.appColors.down;
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final isProfit = _monthProfit >= 0;
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final color = _isLoading ? context.colors.onSurfaceVariant : (isProfit ? upColor : downColor);
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return Column(
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children: [
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Text(
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'月度盈虧',
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style: AppTextStyles.bodyMedium(context).copyWith(
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color: context.colors.onSurfaceVariant,
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),
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),
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SizedBox(height: AppSpacing.xs),
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Text(
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_isLoading
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? '--'
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: '${isProfit ? '+' : ''}${_monthProfit.toStringAsFixed(2)} USDT',
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style: AppTextStyles.displaySmall(context).copyWith(
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fontWeight: FontWeight.bold,
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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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/// 月份導航行
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Widget _buildMonthNavigation(bool isCurrentMonth) {
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return Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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// 上一月
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GestureDetector(
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onTap: _previousMonth,
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child: Container(
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padding: EdgeInsets.all(AppSpacing.xs + 1),
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decoration: BoxDecoration(
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color: context.colors.surfaceContainerHigh,
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borderRadius: BorderRadius.circular(AppRadius.sm),
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),
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child: Icon(
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LucideIcons.chevronLeft,
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size: 16,
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color: context.colors.onSurfaceVariant,
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),
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),
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),
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// 當前年月
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Text(
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'${_currentMonth.year}年${_currentMonth.month}月',
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style: AppTextStyles.headlineMedium(context).copyWith(
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fontWeight: FontWeight.bold,
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),
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),
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// 下一月（當前月禁用）
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GestureDetector(
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onTap: isCurrentMonth ? null : _nextMonth,
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child: Container(
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padding: EdgeInsets.all(AppSpacing.xs + 1),
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decoration: BoxDecoration(
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color: isCurrentMonth
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? context.colors.surfaceContainerHigh.withValues(alpha: 0.5)
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: context.colors.surfaceContainerHigh,
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borderRadius: BorderRadius.circular(AppRadius.sm),
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),
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child: Icon(
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LucideIcons.chevronRight,
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size: 16,
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color: isCurrentMonth
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? context.colors.onSurfaceVariant.withValues(alpha: 0.4)
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: context.colors.onSurfaceVariant,
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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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/// 星期標題行
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Widget _buildWeekdayHeaders() {
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return Row(
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children: ['一', '二', '三', '四', '五', '六', '日'].map((d) {
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return Expanded(
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child: Center(
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child: Text(
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d,
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style: AppTextStyles.bodySmall(context).copyWith(
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fontWeight: FontWeight.w500,
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color: context.colors.onSurfaceVariant.withValues(alpha: 0.6),
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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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/// 加載指示器
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Widget _buildLoadingIndicator() {
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return Padding(
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padding: EdgeInsets.symmetric(vertical: AppSpacing.xxl),
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child: Center(
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child: SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: context.colors.primary,
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),
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),
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),
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);
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}
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/// 日曆網格
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List<Widget> _buildCalendarGrid(
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DateTime now,
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bool isCurrentMonth,
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) {
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final upColor = context.appColors.up;
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final downColor = context.appColors.down;
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final firstDayOfMonth = DateTime(_currentMonth.year, _currentMonth.month, 1);
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final daysInMonth =
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DateTime(_currentMonth.year, _currentMonth.month + 1, 0).day;
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final startWeekday = firstDayOfMonth.weekday;
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final List<Widget> rows = [];
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List<Widget> cells = [];
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// 填充月初空白
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for (int i = 1; i < startWeekday; i++) {
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cells.add(const Expanded(child: SizedBox.shrink()));
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}
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// 填充每天
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for (int day = 1; day <= daysInMonth; day++) {
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final profit = _getDayProfit(day);
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final isToday = isCurrentMonth && day == now.day;
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final hasProfit = profit != null && profit != 0;
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cells.add(
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Expanded(
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child: AspectRatio(
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aspectRatio: 1,
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child: Container(
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margin: EdgeInsets.all(1),
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decoration: BoxDecoration(
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color: isToday
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? context.colors.primary.withValues(alpha: 0.12)
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: hasProfit
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? (profit! > 0
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? upColor.withValues(alpha: 0.08)
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: downColor.withValues(alpha: 0.08))
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: Colors.transparent,
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borderRadius: BorderRadius.circular(AppRadius.sm),
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border: isToday
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? Border.all(
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color: context.colors.primary.withValues(alpha: 0.4),
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width: 1,
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)
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: null,
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),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Text(
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'$day',
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style: AppTextStyles.bodySmall(context).copyWith(
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fontSize: 10,
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fontWeight: isToday ? FontWeight.bold : FontWeight.w400,
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color: isToday
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? context.colors.primary
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: context.colors.onSurface,
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),
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),
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if (hasProfit) ...[
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SizedBox(height: 1),
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Text(
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'${profit! > 0 ? '+' : ''}${profit.abs() < 10 ? profit.toStringAsFixed(2) : profit.toStringAsFixed(1)}',
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style: TextStyle(
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fontSize: 7,
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fontWeight: FontWeight.w600,
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color: profit > 0 ? upColor : downColor,
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),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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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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if (cells.length == 7) {
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rows.add(Row(children: cells));
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cells = [];
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}
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}
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// 填充月末空白
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if (cells.isNotEmpty) {
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while (cells.length < 7) {
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cells.add(const Expanded(child: SizedBox.shrink()));
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}
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rows.add(Row(children: cells));
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}
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return rows;
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}
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}
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