import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/material.dart';
import 'package:kouyu_english/core/app_state.dart';
import 'package:kouyu_english/widgets/lexicon_lookup.dart';

void main() {
  test('lookup prefers the longest reviewed phrase', () {
    final entry = findCourseLexicon('Nice to meet you, Mia.');

    expect(entry, isNotNull);
    expect(entry!.word, 'Nice to meet you');
    expect(entry.meaning, isNotEmpty);
  });

  test('lookup includes reviewed vocabulary from split segments', () {
    final entry = findCourseLexicon("It's three o'clock.");

    expect(entry, isNotNull);
    expect(entry!.word, "It's three o'clock.");
  });

  test('unknown text has no invented dictionary entry', () {
    expect(findCourseLexicon('supercalifragilistic'), isNull);
  });

  test('lookup does not match substrings within longer words', () {
    expect(findCourseLexicon('often'), isNull);
    expect(findCourseLexicon('sentence'), isNull);
    expect(findCourseLexicon('teacher'), isNull);
  });

  test(
    'lookup matches reviewed vocabulary with punctuation and apostrophes',
    () {
      expect(findCourseLexicon('tea'), isNotNull);
      expect(findCourseLexicon('tea.'), isNotNull);
      expect(findCourseLexicon("What's this?"), isNotNull);
      expect(findCourseLexicon('What’s this?'), isNotNull);
    },
  );

  testWidgets('cached temporary definition appears when lookup opens', (
    tester,
  ) async {
    final state = AppState()
      ..cacheTemporaryDefinition(query: 'library', definition: '图书馆');
    await tester.pumpWidget(
      MaterialApp(
        home: Builder(
          builder: (context) => ElevatedButton(
            onPressed: () => showLexiconLookup(
              context,
              state: state,
              initialText: 'library',
            ),
            child: const Text('查词'),
          ),
        ),
      ),
    );
    await tester.tap(find.text('查词'));
    await tester.pumpAndSettle();

    expect(find.textContaining('待审核临时释义'), findsOneWidget);
    expect(find.textContaining('图书馆'), findsOneWidget);
  });

  testWidgets('selected arbitrary text exposes a dynamic lookup action', (
    tester,
  ) async {
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(body: LexiconText('mystery widget', state: AppState())),
      ),
    );

    expect(find.byType(SelectableText), findsOneWidget);
    await tester.longPress(find.text('mystery widget'));
    await tester.pumpAndSettle();

    expect(find.text('查询已选文本'), findsOneWidget);
  });
}