import 'package:flutter_test/flutter_test.dart';
import 'package:halkyon_learn_flutter/src/feature/about/bloc/about_bloc.dart';
import 'package:halkyon_learn_flutter/src/feature/about/data/about_repository.dart';
import 'package:material_ui/material_ui.dart';

import '../../support/fake_about_gateway.dart';
import '../../support/pump_app.dart';
import '../../support/test_dependencies.dart';

void main() {
  group('AboutBloc', () {
    test('finds where the instance says its source is', () async {
      final bloc = AboutBloc(AboutRepository(FakeAboutGateway()))
        ..add(const AboutEventStarted());
      addTearDown(bloc.close);

      await expectLater(
        bloc.stream,
        emits(const AboutStateLoaded('https://example.org/halkyon-learn')),
      );
    });

    test('says so when the instance cannot be reached', () async {
      final gateway = FakeAboutGateway()
        ..unreachable = Exception('No connection');
      final bloc = AboutBloc(AboutRepository(gateway))
        ..add(const AboutEventStarted());
      addTearDown(bloc.close);

      await expectLater(bloc.stream, emits(const AboutStateUnreachable()));
    });
  });

  testWidgets('profile → settings → about shows the licences and the source', (
    tester,
  ) async {
    await pumpApp(tester, testDependencies());

    await openTab(tester, 'Profile');
    await tester.tap(find.byTooltip('Settings'));
    await tester.pumpAndSettle();
    await tester.scrollUntilVisible(
      find.text('About Halkyon Learn'),
      200,
      // The citation preview is selectable, a scroll view of its own.
      scrollable: find.byType(Scrollable).first,
    );
    await tester.pumpAndSettle();
    await tester.tap(find.text('About Halkyon Learn'));
    await tester.pumpAndSettle();

    expect(
      find.textContaining('GNU Affero General Public License'),
      findsOneWidget,
    );
    expect(find.text('https://example.org/halkyon-learn'), findsOneWidget);
    expect(find.text('View licenses'), findsOneWidget);
  });
}