feat(app): экраны импорта отчётов, целей, доходов, ребалансировки, налогов и бенчмарков

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.
2026-09-19 10:44:38 +03:00
parent 15f5812ea4
commit b69bb4a0c9
52 changed files with 7404 additions and 13 deletions
@@ -0,0 +1,183 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../core/api/api_client.dart';
+import '../../core/utils/ru_date.dart';
+import '../../core/widgets/async_value_view.dart';
+import '../../core/widgets/empty_state.dart';
+import 'data/benchmarks_api.dart';
+import 'labels.dart';
+import 'providers.dart';
+
+final benchmarksApiProvider =
+    Provider<BenchmarksApi>((ref) => BenchmarksApi(ref.watch(apiProvider).dio));
+
+/// Benchmark comparison for the current scope. Part of Портфель, not a screen of its own:
+/// «на сколько я обогнал индекс» is a property of the portfolio, not a separate subject.
+final benchmarkRowsProvider = FutureProvider.autoDispose<List<BenchmarkRow>>((ref) async {
+  final scope = ref.watch(scopeProvider);
+  return ref.watch(benchmarksApiProvider).compare(scope: scope);
+});
+
+/// The comparison block on Портфель.
+///
+/// Two things are always marked: a **price** index (no dividends — it understates the
+/// holder's result by construction) and any non-zero `days_skipped` on either side (the two
+/// returns then do not cover the same days, so the difference is not strictly like-for-like).
+class BenchmarksCard extends ConsumerWidget {
+  const BenchmarksCard({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final rows = ref.watch(benchmarkRowsProvider);
+
+    return AsyncValueView(
+      value: rows,
+      onRetry: () => ref.invalidate(benchmarkRowsProvider),
+      data: (data) => data.isEmpty
+          ? const EmptyState(
+              icon: Icons.compare_arrows,
+              message: 'Бенчмарки не настроены — сравнивать не с чем.',
+            )
+          : Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                for (final row in data)
+                  Padding(
+                    padding: const EdgeInsets.only(bottom: 12),
+                    child: _PeriodBlock(row: row),
+                  ),
+              ],
+            ),
+    );
+  }
+}
+
+class _PeriodBlock extends StatelessWidget {
+  const _PeriodBlock({required this.row});
+
+  final BenchmarkRow row;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          children: [
+            Text(periodLabel(row.period), style: theme.textTheme.titleSmall),
+            const SizedBox(width: 8),
+            if (row.dateFrom != null && row.dateTo != null)
+              Text(
+                '${ruDate(row.dateFrom!)} – ${ruDate(row.dateTo!)}',
+                style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor),
+              ),
+            const Spacer(),
+            Text(
+              'портфель ${formatPercent(row.portfolioTwr)}',
+              style: theme.textTheme.titleSmall
+                  ?.copyWith(color: signColor(context, row.portfolioTwr)),
+            ),
+            if (row.portfolioDaysSkipped > 0) ...[
+              const SizedBox(width: 6),
+              _SkippedChip(days: row.portfolioDaysSkipped, side: 'портфеля'),
+            ],
+          ],
+        ),
+        const SizedBox(height: 6),
+        for (final b in row.benchmarks) _BenchmarkRowView(result: b),
+        if (row.hasSkippedDays)
+          Padding(
+            padding: const EdgeInsets.only(top: 6),
+            child: Text(
+              'Сетка дат не полностью совпадает: часть дней пропущена, '
+              'сравнение не строго like-for-like.',
+              style: theme.textTheme.bodySmall?.copyWith(color: theme.colorScheme.error),
+            ),
+          ),
+        const Divider(height: 20),
+      ],
+    );
+  }
+}
+
+class _BenchmarkRowView extends StatelessWidget {
+  const _BenchmarkRowView({required this.result});
+
+  final BenchmarkResult result;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 3),
+      child: Row(
+        children: [
+          Text(result.code, style: theme.textTheme.bodyMedium),
+          const SizedBox(width: 6),
+          if (result.isPriceIndex) const _PriceIndexChip(),
+          if (result.daysSkipped > 0) ...[
+            const SizedBox(width: 6),
+            _SkippedChip(days: result.daysSkipped, side: 'бенчмарка'),
+          ],
+          const Spacer(),
+          Text(formatPercent(result.twr), style: theme.textTheme.bodyMedium),
+          const SizedBox(width: 16),
+          SizedBox(
+            width: 92,
+            child: Text(
+              formatPercent(result.excess),
+              textAlign: TextAlign.right,
+              style: theme.textTheme.bodyMedium
+                  ?.copyWith(color: signColor(context, result.excess)),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _PriceIndexChip extends StatelessWidget {
+  const _PriceIndexChip();
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return Tooltip(
+      message: 'Ценовой индекс: не учитывает дивиденды и систематически занижает '
+          'результат держателя. Сравнение с ним — нижняя граница, а не эталон.',
+      child: Container(
+        padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
+        decoration: BoxDecoration(
+          color: scheme.errorContainer,
+          borderRadius: BorderRadius.circular(6),
+        ),
+        child: Text('ценовой индекс', style: Theme.of(context).textTheme.labelSmall),
+      ),
+    );
+  }
+}
+
+class _SkippedChip extends StatelessWidget {
+  const _SkippedChip({required this.days, required this.side});
+
+  final int days;
+  final String side;
+
+  @override
+  Widget build(BuildContext context) {
+    return Tooltip(
+      message: 'В расчёте $side пропущено $days дн. — в эти дни не было цены',
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          const Icon(Icons.info_outline, size: 14),
+          const SizedBox(width: 2),
+          Text('$days дн.', style: Theme.of(context).textTheme.labelSmall),
+        ],
+      ),
+    );
+  }
+}