import 'package:fintracker_api/fintracker_api.dart';
import 'package:fintracker_app/core/cache/cached.dart';
import 'package:fintracker_app/core/widgets/money_text.dart';
import 'package:fintracker_app/features/accounts/accounts_page.dart';
import 'package:fintracker_app/features/accounts/actions.dart';
import 'package:fintracker_app/features/accounts/providers.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';

AccountOut _account(
  int id,
  String name,
  AccountKind kind, {
  String? balance,
  String? valueRub,
  bool disabled = false,
  bool archived = false,
  AccountRole? role,
  String source = 'zenmoney',
}) => AccountOut(
  id: id,
  kind: kind,
  source_: source,
  sourceId: 'acc-$id',
  broker: null,
  name: name,
  currency: 'RUB',
  role:
      role ??
      (kind == AccountKind.broker
          ? AccountRole.investment
          : AccountRole.liquid),
  includeInNetWorth: true,
  mirrorOfAccountId: null,
  primaryEventSource: null,
  archived: archived,
  disabled: disabled,
  openedAt: null,
  balance: balance,
  balanceAsOf: null,
  startBalance: null,
  creditLimit: null,
  valueRub: valueRub,
);

class _FakeActions implements AccountActions {
  final calls = <(List<int>, AccountPatch)>[];

  @override
  Future<String?> patch(Iterable<int> ids, AccountPatch patch) async {
    calls.add((ids.toList(), patch));
    return null;
  }
}

/// Rows sort as: active by type then name, then disabled — so «Карта» (1), «Брокер» (3),
/// «Старая карта» (2, disabled).
List<AccountOut> _sample() => [
  _account(1, 'Карта', AccountKind.zmCard, balance: '500'),
  _account(
    2,
    'Старая карта',
    AccountKind.zmCard,
    balance: '20',
    disabled: true,
  ),
  _account(
    3,
    'Брокер',
    AccountKind.broker,
    valueRub: '1044264',
    source: 'tinvest',
  ),
];

Future<_FakeActions> _open(
  WidgetTester tester,
  List<AccountOut> accounts, {
  double width = 1200,
}) async {
  tester.view.physicalSize = Size(width, 1000);
  tester.view.devicePixelRatio = 1;
  addTearDown(tester.view.reset);
  final fake = _FakeActions();
  await tester.pumpWidget(
    ProviderScope(
      overrides: [
        accountsProvider.overrideWith((ref) async => Cached(accounts)),
        accountActionsProvider.overrideWithValue(fake),
      ],
      child: const MaterialApp(home: AccountsPage()),
    ),
  );
  await tester.pumpAndSettle();
  return fake;
}

void main() {
  testWidgets(
    'a broker account shows its ledger valuation, a card its balance',
    (tester) async {
      await _open(tester, _sample());

      expect(find.text(MoneyText.format('1044264', 'RUB')), findsOneWidget);
      expect(find.text(MoneyText.format('500', 'RUB')), findsOneWidget);
      // the source tells a ZenMoney account from a broker one
      expect(find.textContaining('T-Invest'), findsOneWidget);
      expect(find.textContaining('ZenMoney'), findsWidgets);
    },
  );

  testWidgets('no amount at all reads as a dash, not as zero', (tester) async {
    await _open(tester, [_account(1, 'Пустой брокер', AccountKind.broker)]);

    expect(find.text('—'), findsOneWidget);
  });

  testWidgets('the status chips count the accounts and filter the list', (
    tester,
  ) async {
    await _open(tester, _sample());

    expect(find.text('Все 3'), findsOneWidget);
    expect(find.text('Активные 2'), findsOneWidget);
    expect(find.text('Отключённые 1'), findsOneWidget);
    expect(find.text('Архивные 0'), findsOneWidget);
    expect(
      find.text('Старая карта'),
      findsOneWidget,
      reason: 'all shows the disabled one too',
    );

    await tester.tap(find.text('Отключённые 1'));
    await tester.pumpAndSettle();
    expect(find.text('Старая карта'), findsOneWidget);
    expect(find.text('Карта'), findsNothing);
    expect(find.text('Брокер'), findsNothing);
  });

  testWidgets('the type chips and the search narrow the list', (tester) async {
    await _open(tester, _sample());

    await tester.tap(find.widgetWithText(FilterChip, 'Инвестиции'));
    await tester.pumpAndSettle();
    expect(find.text('Брокер'), findsOneWidget);
    expect(find.text('Карта'), findsNothing);

    await tester.tap(find.widgetWithText(FilterChip, 'Инвестиции'));
    await tester.enterText(find.byType(TextField), 'старая');
    await tester.pumpAndSettle();
    expect(find.text('Старая карта'), findsOneWidget);
    expect(find.text('Брокер'), findsNothing);

    await tester.enterText(find.byType(TextField), 'nothing like it');
    await tester.pumpAndSettle();
    expect(find.text('Ничего не найдено'), findsOneWidget);
  });

  testWidgets(
    'the «Активен» switch on a row sends one patch for that account',
    (tester) async {
      final fake = await _open(tester, _sample());

      // per row the switches are «В капитал» then «Активен»; the first row is «Карта» (id 1)
      await tester.tap(find.byType(Switch).at(1));
      await tester.pumpAndSettle();

      expect(fake.calls, hasLength(1));
      expect(fake.calls.single.$1, [1]);
      expect(fake.calls.single.$2.disabled, isTrue);
    },
  );

  testWidgets('switching a disabled account back on sends disabled: false', (
    tester,
  ) async {
    final fake = await _open(tester, _sample());

    await tester.tap(find.byType(Switch).at(5)); // «Старая карта», «Активен»
    await tester.pumpAndSettle();

    expect(fake.calls.single.$1, [2]);
    expect(fake.calls.single.$2.disabled, isFalse);
  });

  testWidgets('the type pill offers the four types and sends the chosen one', (
    tester,
  ) async {
    final fake = await _open(tester, _sample());

    await tester.tap(find.byTooltip('Тип счёта').first);
    await tester.pumpAndSettle();
    await tester.tap(
      find.widgetWithText(CheckedPopupMenuItem<AccountRole>, 'Сбережения'),
    );
    await tester.pumpAndSettle();

    expect(fake.calls.single.$1, [1]);
    expect(fake.calls.single.$2.role, AccountRole.savings);
  });

  testWidgets(
    'a selection turns into bulk actions and clears itself afterwards',
    (tester) async {
      final fake = await _open(tester, _sample());

      // checkbox 0 is «select all»; rows follow in list order: Карта (1), Брокер (3)
      await tester.tap(find.byType(Checkbox).at(1));
      await tester.tap(find.byType(Checkbox).at(2));
      await tester.pumpAndSettle();
      expect(find.text('Выбрано: 2'), findsOneWidget);

      await tester.tap(find.text('Отключить'));
      await tester.pumpAndSettle();

      expect(fake.calls.single.$1, unorderedEquals([1, 3]));
      expect(fake.calls.single.$2.disabled, isTrue);
      expect(
        find.textContaining('Выбрано'),
        findsNothing,
        reason: 'the selection is spent',
      );
    },
  );

  testWidgets('«select all» takes exactly what the filter shows', (
    tester,
  ) async {
    final fake = await _open(tester, _sample());

    await tester.tap(find.text('Отключённые 1'));
    await tester.pumpAndSettle();
    await tester.tap(find.byType(Checkbox).first);
    await tester.pumpAndSettle();
    expect(find.text('Выбрано: 1'), findsOneWidget);

    await tester.tap(find.text('Включить'));
    await tester.pumpAndSettle();
    expect(fake.calls.single.$1, [2]);
    expect(fake.calls.single.$2.disabled, isFalse);
  });

  testWidgets(
    'a narrow window puts the controls on a second line with their labels',
    (tester) async {
      await _open(tester, _sample(), width: 500);

      expect(find.text('Активен'), findsNWidgets(3));
      expect(find.text('В капитал'), findsNWidgets(3));
      expect(
        find.text('Баланс / стоимость'),
        findsNothing,
        reason: 'no table header on a phone',
      );
    },
  );
}