import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/servicios/servicio_tutorial_ayuda.dart';
import 'package:shared_preferences/shared_preferences.dart';

/// `ServicioTutorialAyuda` decides whether the 9-screen help/tutorial
/// carousel (`PantallaTutorialAyuda`) is still due on this launch. Same
/// injectable-prefs, versioned-key convention as `ServicioBienvenida`: a
/// plain one-time boolean flag, since this tutorial shows once (to both
/// fresh installs and existing installs upgrading to this version) and is
/// otherwise only reachable manually from Ajustes.
void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  group('ServicioTutorialAyuda', () {
    test(
      'debeMostrarTutorial is true before it has ever been marked seen',
      () async {
        SharedPreferences.setMockInitialValues({});
        final servicio = ServicioTutorialAyuda();

        expect(await servicio.debeMostrarTutorial(), isTrue);
      },
    );

    test('debeMostrarTutorial is false after marcarTutorialVisto', () async {
      SharedPreferences.setMockInitialValues({});
      final servicio = ServicioTutorialAyuda();

      await servicio.marcarTutorialVisto();

      expect(await servicio.debeMostrarTutorial(), isFalse);
    });

    test('respects a seen flag already persisted by a prior launch', () async {
      SharedPreferences.setMockInitialValues({'pluri_tutorial_visto_v1': true});
      final servicio = ServicioTutorialAyuda();

      expect(await servicio.debeMostrarTutorial(), isFalse);
    });

    test(
      'is still due on an existing install that has other unrelated flags '
      'set but never this one (e.g. the welcome screen already seen)',
      () async {
        SharedPreferences.setMockInitialValues({
          'pluri_bienvenida_vista_v1': true,
        });
        final servicio = ServicioTutorialAyuda();

        expect(await servicio.debeMostrarTutorial(), isTrue);
      },
    );
  });
}