import 'package:fintracker_app/core/glossary.dart';
import 'package:fintracker_app/core/widgets/help_tip.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

Widget _app(Widget child) => MaterialApp(
  home: Scaffold(body: Center(child: child)),
);

void main() {
  test('the glossary finds a term regardless of case, spaces and «ё»', () {
    expect(glossaryHint('XIRR'), isNotNull);
    expect(glossaryHint('  xirr '), glossaryHint('XIRR'));
    expect(glossaryHint('Запас хода (runway)'), isNotNull);
    expect(glossaryHint('Внешний поток'), isNotNull);
    expect(
      glossaryHint('Счёт'),
      isNull,
      reason: 'an ordinary word is not a term',
    );
  });

  test('every explanation is a real sentence, not a stub', () {
    for (final label in [
      'XIRR',
      'TWR',
      'НКД',
      'ЛДВ',
      'Пассивный доход',
      'Запас хода (runway)',
    ]) {
      final text = glossaryHint(label)!;
      expect(text.length, greaterThan(40), reason: label);
      expect(text.trim().endsWith('.'), isTrue, reason: label);
    }
  });

  testWidgets('a known term carries a «?», an unknown label stays plain text', (
    tester,
  ) async {
    await tester.pumpWidget(
      _app(
        const Column(
          mainAxisSize: MainAxisSize.min,
          children: [TermLabel('TWR'), TermLabel('Название')],
        ),
      ),
    );

    expect(find.text('TWR'), findsOneWidget);
    expect(find.text('Название'), findsOneWidget);
    expect(find.byIcon(Icons.help_outline), findsOneWidget);
  });

  testWidgets('an explicit hint wins over the glossary', (tester) async {
    await tester.pumpWidget(
      _app(const TermLabel('Прибыль', hint: 'Своё пояснение для налогов.')),
    );

    final tip = tester.widget<Tooltip>(find.byType(Tooltip));
    expect(tip.message, 'Своё пояснение для налогов.');
  });

  testWidgets('hovering the «?» with a mouse shows the explanation', (
    tester,
  ) async {
    await tester.pumpWidget(_app(const TermLabel('XIRR')));

    final mouse = await tester.createGesture(kind: PointerDeviceKind.mouse);
    await mouse.addPointer(location: Offset.zero);
    addTearDown(mouse.removePointer);
    await mouse.moveTo(tester.getCenter(find.byIcon(Icons.help_outline)));
    await tester.pump(const Duration(milliseconds: 300));
    await tester.pump();

    expect(
      find.textContaining('годовая доходность с учётом дат'),
      findsOneWidget,
    );
  });

  testWidgets('a tap shows it too, for a phone with no hover', (tester) async {
    await tester.pumpWidget(_app(const TermLabel('НКД')));

    await tester.tap(find.byIcon(Icons.help_outline));
    await tester.pump(const Duration(milliseconds: 300));

    expect(find.textContaining('накопленный купонный доход'), findsOneWidget);
  });

  testWidgets('a numeric header keeps its label at the end of the cell', (
    tester,
  ) async {
    await tester.pumpWidget(
      _app(
        const SizedBox(
          width: 200,
          child: TermLabel(
            'XIRR',
            alignment: MainAxisAlignment.end,
            textAlign: TextAlign.end,
          ),
        ),
      ),
    );

    final label = tester.getRect(find.text('XIRR'));
    final icon = tester.getRect(find.byIcon(Icons.help_outline));
    expect(
      icon.left,
      greaterThanOrEqualTo(label.right),
      reason: 'the «?» follows the text',
    );
    expect(
      icon.right,
      greaterThan(150),
      reason: 'and the pair hugs the right edge',
    );
  });
}