import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/estado/estado_idioma.dart';
import 'package:pluriwave/l10n/gen/app_localizations.dart';
import 'package:pluriwave/pantallas/ajustes/pantalla_ajustes_idioma.dart';
import 'package:pluriwave/widgets/pluri_push_scaffold.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

/// WU3b task 3b.1: the APLICACIÓN detail screen for "Idioma" renders inside
/// a [PluriPushScaffold] and its moved control (the language dropdown)
/// still responds exactly as it did inside the old `_SeccionIdioma`.
void main() {
  setUp(() {
    SharedPreferences.setMockInitialValues({});
  });

  Widget buildScreen(EstadoIdioma estado) {
    return ChangeNotifierProvider<EstadoIdioma>.value(
      value: estado,
      child: MaterialApp(
        locale: const Locale('en'),
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        supportedLocales: AppLocalizations.supportedLocales,
        home: const PantallaAjustesIdioma(),
      ),
    );
  }

  testWidgets('renders inside a PluriPushScaffold titled "Language"', (
    tester,
  ) async {
    final estado = EstadoIdioma(
      sharedPreferences: await SharedPreferences.getInstance(),
    );
    addTearDown(estado.dispose);

    await tester.pumpWidget(buildScreen(estado));
    await tester.pumpAndSettle();

    expect(find.byType(PluriPushScaffold), findsOneWidget);
    // "Language" legitimately renders twice here too (pre-existing,
    // unmodified by this move): the pushed screen's title AND the
    // dropdown's own floating label share the same l10n string.
    expect(find.text('Language'), findsWidgets);
  });

  testWidgets('moved control still responds: selecting a language persists '
      'it', (tester) async {
    final estado = EstadoIdioma(
      sharedPreferences: await SharedPreferences.getInstance(),
    );
    addTearDown(estado.dispose);

    await tester.pumpWidget(buildScreen(estado));
    await tester.pumpAndSettle();

    await tester.tap(find.byType(DropdownButtonFormField<String>));
    await tester.pumpAndSettle();
    await tester.tap(find.text('Español').last);
    await tester.pumpAndSettle();

    expect(estado.localeSeleccionado, const Locale('es'));
    expect(find.text('Language updated: Español'), findsOneWidget);

    // SnackBar's own dismiss Timer is not frame-scheduled — let it resolve
    // before teardown (WU3a batch discovery) instead of leaving a pending
    // Timer behind.
    await tester.pump(const Duration(seconds: 5));
    await tester.pumpAndSettle();
  });
}