import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:intl/date_symbol_data_local.dart';
import 'package:intl/intl.dart';
import 'package:pluriwave/estado/estado_alarmas.dart';
import 'package:pluriwave/estado/estado_radio.dart';
import 'package:pluriwave/l10n/formato_fechas.dart';
import 'package:pluriwave/l10n/gen/app_localizations.dart';
import 'package:pluriwave/modelos/alarma_musical.dart';
import 'package:pluriwave/pantallas/pantalla_alarmas.dart';
import 'package:pluriwave/servicios/servicio_alarmas.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

import '../helpers/fakes.dart';
import '../helpers/fakes_alarmas.dart';

/// S5-R4: short dates must follow the active locale, not a hardcoded
/// DD/MM/YYYY pattern.
void main() {
  test('en-US usa el orden mes/día, no el formato fijo DD/MM/YYYY', () {
    final fecha = DateTime(2026, 6, 11);
    final resultado = fechaCortaLocalizada('en-US', fecha);

    expect(resultado, DateFormat.yMd('en-US').format(fecha));
    expect(resultado, isNot('11/06/2026'));
    expect(resultado, '6/11/2026');
  });

  test('es usa el orden día/mes', () async {
    await initializeDateFormatting('es');
    final fecha = DateTime(2026, 6, 11);

    expect(
      fechaCortaLocalizada('es', fecha),
      DateFormat.yMd('es').format(fecha),
    );
  });

  group('WU10 — la seccion Avanzada del editor conserva fecha, respaldo y '
      'sonido', () {
    final l10n = lookupAppLocalizations(const Locale('es'));

    setUp(() {
      SharedPreferences.setMockInitialValues({});
    });

    Future<EstadoAlarmas> abrirEditorNuevo(WidgetTester tester) async {
      tester.view.physicalSize = const Size(1440, 3200);
      tester.view.devicePixelRatio = 1.0;
      addTearDown(tester.view.resetPhysicalSize);
      addTearDown(tester.view.resetDevicePixelRatio);

      final favoritos = FakeServicioFavoritos();
      await favoritos.agregar(emisoraDemo(uuid: 'gamma', nombre: 'Gamma FM'));
      final radio = EstadoRadio(
        audio: FakeServicioAudio(),
        favoritos: favoritos,
        radio: FakeServicioRadio(),
        servicioEcualizador: FakeServicioEcualizador(),
        servicioGrabacion: FakeServicioGrabacionRadioInactiva(),
        iniciarAutomaticamente: false,
      );
      addTearDown(radio.dispose);
      await radio.cargarFavoritos();

      final android = FakePuertoAlarmasAndroid();
      final estadoAlarmas = EstadoAlarmas(
        servicio: ServicioAlarmas(reloj: DateTime.now),
        android: android,
        iniciarAutomaticamente: false,
      );
      addTearDown(estadoAlarmas.dispose);
      addTearDown(android.dispose);

      await tester.pumpWidget(
        MultiProvider(
          providers: [
            ChangeNotifierProvider<EstadoRadio>.value(value: radio),
            ChangeNotifierProvider<EstadoAlarmas>.value(value: estadoAlarmas),
          ],
          child: MaterialApp(
            locale: const Locale('es'),
            localizationsDelegates: AppLocalizations.localizationsDelegates,
            supportedLocales: AppLocalizations.supportedLocales,
            home: const Scaffold(body: PantallaAlarmas()),
          ),
        ),
      );
      await tester.pumpAndSettle();

      await tester.tap(find.text(l10n.createAlarmAction));
      await tester.pumpAndSettle();

      return estadoAlarmas;
    }

    Future<void> expandirAvanzado(WidgetTester tester) async {
      await tester.ensureVisible(find.text(l10n.alarmAdvancedSectionTitle));
      await tester.tap(find.text(l10n.alarmAdvancedSectionTitle));
      await tester.pumpAndSettle();
    }

    testWidgets(
      'los circulos de dia de la semana son siempre visibles, incluso '
      'cuando el tipo es Una vez (por defecto en una alarma nueva)',
      (tester) async {
        await abrirEditorNuevo(tester);

        expect(find.text(l10n.weekdayShortMonday), findsOneWidget);
        expect(find.text(l10n.weekdayShortSunday), findsOneWidget);
      },
    );

    testWidgets(
      'permite crear una alarma de fecha unica desde la seccion Avanzada '
      '(colapsada por defecto)',
      (tester) async {
        final estadoAlarmas = await abrirEditorNuevo(tester);

        // A brand-new alarm already defaults to "one time" — the date field
        // is reachable as soon as Advanced is expanded, no mode switch
        // needed first.
        await expandirAvanzado(tester);

        await tester.ensureVisible(find.text(l10n.dateField));
        await tester.tap(find.text(l10n.dateField));
        await tester.pumpAndSettle();

        final okLabel =
            MaterialLocalizations.of(
              tester.element(find.text(l10n.dateField)),
            ).okButtonLabel;
        await tester.tap(find.text(okLabel));
        await tester.pumpAndSettle();

        await tester.ensureVisible(find.text(l10n.saveAlarmAction));
        await tester.tap(find.text(l10n.saveAlarmAction));
        await tester.pumpAndSettle();

        final alarma = estadoAlarmas.alarmas.single;
        expect(alarma.tipoProgramacion, TipoProgramacionAlarma.unica);
        expect(alarma.fechaUnica, isNotNull);
        expect(alarma.diasSemana, isEmpty);
      },
    );

    testWidgets(
      'el selector de emisora de respaldo sigue alcanzable desde Avanzado '
      'y persiste (S2-R9)',
      (tester) async {
        final estadoAlarmas = await abrirEditorNuevo(tester);

        await expandirAvanzado(tester);

        await tester.ensureVisible(
          find.byKey(const ValueKey('alarm-fallback-station-field')),
        );
        await tester.tap(
          find.byKey(const ValueKey('alarm-fallback-station-field')),
        );
        await tester.pumpAndSettle();

        // Scoped to the just-opened picker sheet's list: the primary
        // station field auto-selects the sole registered favorite too
        // (`EstadoRadio.emisoraPreferida` falls back to the first
        // favorite), so an unscoped `find.text('Gamma FM')` would match
        // twice — once there, once in this sheet.
        final lista = find.byType(ListView).last;
        expect(
          find.descendant(of: lista, matching: find.text('Gamma FM')),
          findsOneWidget,
        );
        await tester.tap(
          find.descendant(of: lista, matching: find.text('Gamma FM')),
        );
        await tester.pumpAndSettle();

        await tester.ensureVisible(find.text(l10n.saveAlarmAction));
        await tester.tap(find.text(l10n.saveAlarmAction));
        await tester.pumpAndSettle();

        final alarma = estadoAlarmas.alarmas.single;
        expect(alarma.emisoraFallback?.nombre, 'Gamma FM');
      },
    );

    testWidgets(
      'el dropdown de sonido interno sigue alcanzable desde Avanzado y '
      'persiste',
      (tester) async {
        final estadoAlarmas = await abrirEditorNuevo(tester);

        await expandirAvanzado(tester);

        await tester.ensureVisible(
          find.byType(DropdownButtonFormField<SonidoInternoAlarma>),
        );
        await tester.tap(
          find.byType(DropdownButtonFormField<SonidoInternoAlarma>),
        );
        await tester.pumpAndSettle();

        await tester.tap(find.text(l10n.soundSoftBell).last);
        await tester.pumpAndSettle();

        await tester.ensureVisible(find.text(l10n.saveAlarmAction));
        await tester.tap(find.text(l10n.saveAlarmAction));
        await tester.pumpAndSettle();

        final alarma = estadoAlarmas.alarmas.single;
        expect(alarma.sonidoInterno, SonidoInternoAlarma.campanaSuave);
      },
    );
  });
}