Dmitry
b69bb4a0c9
Импорт (/imports, /instruments/pending) и фаза 4 (/goals, /income, /rebalance, /tax, аналитика-хаб с benchmarks_card) — по docs/ai/import-contract.md и docs/ai/phase4-contract.md. file_picker для загрузки отчёта.
344 lines
12 KiB
Dart
344 lines
12 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import '../../core/utils/ru_date.dart';
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import '../../core/widgets/async_value_view.dart';
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import '../../core/widgets/empty_state.dart';
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import '../../core/widgets/money_text.dart';
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import '../../core/widgets/section_card.dart';
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import '../portfolio/labels.dart' show formatQty, signColor;
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import 'data/rebalance_api.dart';
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import 'labels.dart';
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import 'providers.dart';
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import 'weights.dart';
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/// Рекомендации: what to buy and sell to get back to the target weights.
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///
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/// Three things are marked explicitly, because without them the numbers mislead:
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/// `within_band` (no action needed — the drift is inside the corridor the user set),
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/// `blocked_by_cash` (the quantity was cut because the cash ran out), and a null
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/// `suggested_qty` (there is no price, so no quantity can be computed — an em dash, not 0).
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class RebalancePlanTab extends ConsumerWidget {
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const RebalancePlanTab({super.key});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final plan = ref.watch(rebalancePlanProvider);
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return RefreshIndicator(
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onRefresh: () async => ref.invalidate(rebalancePlanProvider),
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child: AsyncValueView(
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value: plan,
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onRetry: () => ref.invalidate(rebalancePlanProvider),
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data: (data) {
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if (data == null) {
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return const EmptyState(
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icon: Icons.balance,
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message: 'Портфель не выбран.',
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);
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}
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return ListView(
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padding: const EdgeInsets.all(16),
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children: [
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_Header(plan: data),
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if (data.warnings.isNotEmpty) ...[
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const SizedBox(height: 12),
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_Warnings(warnings: data.warnings),
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],
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const SizedBox(height: 16),
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if (data.buckets.isEmpty)
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const Padding(
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padding: EdgeInsets.only(top: 32),
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child: EmptyState(
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icon: Icons.balance,
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message: 'Нечего показать: целевые веса по этому измерению не заданы.',
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),
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)
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else if (data.everythingWithinBand)
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Card(
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color: Theme.of(context).colorScheme.secondaryContainer,
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child: const ListTile(
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leading: Icon(Icons.check_circle_outline),
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title: Text('Все группы внутри коридора'),
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subtitle: Text('Действий не требуется — отклонения меньше заданного допуска.'),
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),
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),
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const SizedBox(height: 8),
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for (final b in data.buckets)
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Padding(
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padding: const EdgeInsets.only(bottom: 12),
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child: _BucketCard(dimension: data.dimension, bucket: b),
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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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class _Header extends ConsumerWidget {
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const _Header({required this.plan});
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final RebalancePlan plan;
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final whatIf = ref.watch(whatIfCashProvider);
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return SectionCard(
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title: 'Портфель',
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subtitle: plan.asOf == null ? null : 'на ${ruDate(plan.asOf!)}',
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Wrap(
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spacing: 24,
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runSpacing: 8,
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children: [
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_Figure(
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label: 'Стоимость',
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child: plan.totalValueRub == null
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? const Text('—')
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: MoneyText(plan.totalValueRub!, currency: 'RUB'),
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),
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_Figure(
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label: whatIf == null ? 'Доступно денег' : 'Доступно денег (what-if)',
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child: plan.cashAvailableRub == null
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? const Text('—')
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: MoneyText(plan.cashAvailableRub!, currency: 'RUB'),
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),
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],
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),
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const SizedBox(height: 12),
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_WhatIfCashField(current: whatIf),
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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 _Figure extends StatelessWidget {
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const _Figure({required this.label, required this.child});
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final String label;
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final Widget child;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(label, style: theme.textTheme.bodySmall),
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DefaultTextStyle(style: theme.textTheme.titleMedium!, child: child),
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],
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);
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}
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}
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class _WhatIfCashField extends ConsumerStatefulWidget {
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const _WhatIfCashField({required this.current});
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final String? current;
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@override
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ConsumerState<_WhatIfCashField> createState() => _WhatIfCashFieldState();
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}
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class _WhatIfCashFieldState extends ConsumerState<_WhatIfCashField> {
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late final TextEditingController _controller =
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TextEditingController(text: widget.current ?? '');
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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void _apply() {
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final text = _controller.text.trim().replaceAll(',', '.').replaceAll(' ', '');
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ref.read(whatIfCashProvider.notifier).state = text.isEmpty ? null : text;
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}
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@override
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Widget build(BuildContext context) {
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return Row(
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children: [
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SizedBox(
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width: 220,
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child: TextField(
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controller: _controller,
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keyboardType: const TextInputType.numberWithOptions(decimal: true),
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decoration: const InputDecoration(
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labelText: 'Считать по другой сумме денег, ₽',
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isDense: true,
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helperText: 'пусто — реальный остаток на счетах',
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),
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onSubmitted: (_) => _apply(),
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),
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),
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const SizedBox(width: 12),
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TextButton(onPressed: _apply, child: const Text('Пересчитать')),
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],
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);
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}
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}
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class _Warnings extends StatelessWidget {
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const _Warnings({required this.warnings});
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final List<String> warnings;
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@override
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Widget build(BuildContext context) {
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return Card(
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color: Theme.of(context).colorScheme.tertiaryContainer,
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child: Padding(
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padding: const EdgeInsets.all(12),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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for (final w in warnings)
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Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Icon(Icons.warning_amber_outlined, size: 16),
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const SizedBox(width: 8),
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Expanded(child: Text(w)),
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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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class _BucketCard extends StatelessWidget {
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const _BucketCard({required this.dimension, required this.bucket});
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final String dimension;
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final RebalanceBucket bucket;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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return SectionCard(
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title: bucketLabelForKey(dimension, bucket.bucket),
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subtitle: 'сейчас ${formatShareAsPercent(bucket.currentWeight)} · '
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'цель ${formatShareAsPercent(bucket.targetWeight)} · '
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'отклонение ${formatShareAsPercent(bucket.drift, signed: true)}',
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trailing: bucket.withinBand
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? const _WithinBandChip()
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: (bucket.deltaValueRub == null
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? const Text('—')
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: MoneyText(
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bucket.deltaValueRub!,
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currency: 'RUB',
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style: TextStyle(color: signColor(context, bucket.deltaValueRub)),
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)),
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child: bucket.withinBand
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? Text(
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'Внутри коридора — сделок не требуется.',
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style: theme.textTheme.bodySmall,
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)
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: bucket.trades.isEmpty
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? Text(
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'Сервер не предложил сделок по этой группе: '
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'вероятно, у подходящих бумаг нет цены — см. предупреждения выше.',
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style: theme.textTheme.bodySmall,
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)
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: Column(children: [for (final t in bucket.trades) TradeRow(trade: t)]),
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);
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}
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}
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class _WithinBandChip extends StatelessWidget {
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const _WithinBandChip();
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@override
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Widget build(BuildContext context) {
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final scheme = Theme.of(context).colorScheme;
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return Tooltip(
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message: 'Отклонение не выходит за допуск (band) — действий не требуется',
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child: Chip(
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avatar: const Icon(Icons.check, size: 16),
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label: const Text('в коридоре'),
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backgroundColor: scheme.secondaryContainer,
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visualDensity: VisualDensity.compact,
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),
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);
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}
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}
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/// One suggested trade. Public (unlike its neighbours) so the widget test can render the
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/// `suggested_qty == null` case without standing up a provider container.
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class TradeRow extends StatelessWidget {
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const TradeRow({required this.trade, super.key});
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final RebalanceTrade trade;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final isBuy = trade.action == 'buy';
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final noQty = trade.suggestedQty == null;
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final details = [
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if (trade.lot != null) 'лот ${trade.lot}',
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if (trade.price != null)
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'цена ${MoneyText.format(trade.price!, trade.priceCurrency ?? 'RUB')}',
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].join(' · ');
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return ListTile(
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contentPadding: EdgeInsets.zero,
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dense: true,
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onTap: trade.instrumentId == null
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? null
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: () => context.push('/portfolio/instrument/${trade.instrumentId}'),
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leading: Icon(
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isBuy ? Icons.add_circle_outline : Icons.remove_circle_outline,
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color: isBuy ? Theme.of(context).colorScheme.primary : theme.colorScheme.error,
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),
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title: Row(
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children: [
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Flexible(child: Text(trade.title, overflow: TextOverflow.ellipsis)),
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const SizedBox(width: 8),
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if (trade.blockedByCash) const _BlockedByCashChip(),
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],
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),
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subtitle: Text(
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// a missing price is a reason, not a zero quantity
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noQty
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? 'Количество не рассчитано: нет цены инструмента'
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: '${isBuy ? 'Купить' : 'Продать'} ${formatQty(trade.suggestedQty!)} шт.'
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'${details.isEmpty ? '' : ' · $details'}',
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style: theme.textTheme.bodySmall,
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),
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trailing: noQty || trade.amountRub == null
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? const Text('—')
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: MoneyText(trade.amountRub!, currency: 'RUB', style: theme.textTheme.titleSmall),
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);
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}
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}
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class _BlockedByCashChip extends StatelessWidget {
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const _BlockedByCashChip();
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@override
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Widget build(BuildContext context) {
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final scheme = Theme.of(context).colorScheme;
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return Tooltip(
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message: 'Количество урезано: на счетах не хватает денег на полный объём',
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child: Chip(
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avatar: const Icon(Icons.account_balance_wallet_outlined, size: 16),
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label: const Text('не хватает денег'),
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backgroundColor: scheme.errorContainer,
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visualDensity: VisualDensity.compact,
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),
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);
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}
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}
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