import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/estado/estado_alarmas.dart';
import 'package:pluriwave/estado/estado_radio.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';

class _Entorno {
  _Entorno({required this.estadoAlarmas});

  final EstadoAlarmas estadoAlarmas;
}

Future<_Entorno> _abrirEditor(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: 'alfa', nombre: 'Alfa FM'));
  await favoritos.agregar(emisoraDemo(uuid: 'beta', nombre: 'Beta 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 estadoAlarmas.guardarAlarma(
    const AlarmaMusical(
      id: 'ed1',
      nombre: 'Semanal',
      hora: 7,
      minuto: 30,
      tipoProgramacion: TipoProgramacionAlarma.diasSemana,
      diasSemana: [DateTime.monday],
    ),
  );

  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();

  final l10n = lookupAppLocalizations(const Locale('es'));
  await tester.ensureVisible(find.text(l10n.editAction).first);
  await tester.pumpAndSettle();
  await tester.tap(find.text(l10n.editAction).first);
  await tester.pumpAndSettle();
  return _Entorno(estadoAlarmas: estadoAlarmas);
}

String _textoPreview(WidgetTester tester) {
  final texto = tester.widget<Text>(
    find.descendant(
      of: find.byKey(const ValueKey('next-trigger-preview')),
      matching: find.byType(Text),
    ),
  );
  return texto.data ?? '';
}

void main() {
  final l10n = lookupAppLocalizations(const Locale('es'));

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

  testWidgets(
    'muestra la proxima ejecucion y la actualiza al cambiar la recurrencia '
    '(S2-R8)',
    (tester) async {
      await _abrirEditor(tester);

      expect(
        find.byKey(const ValueKey('next-trigger-preview')),
        findsOneWidget,
      );
      final antes = _textoPreview(tester);
      expect(antes, isNot(l10n.alarmNoNextExecution));

      // Lunes -> Martes: la fecha calculada SIEMPRE cambia, sea cual sea hoy.
      await tester.tap(find.text(l10n.weekdayShortTuesday));
      await tester.pumpAndSettle();
      await tester.tap(find.text(l10n.weekdayShortMonday));
      await tester.pumpAndSettle();

      final despues = _textoPreview(tester);
      expect(despues, isNot(l10n.alarmNoNextExecution));
      expect(despues, isNot(antes));
    },
  );

  testWidgets(
    'el selector de emisora abre un bottom sheet con buscador (S2-R9)',
    (tester) async {
      await _abrirEditor(tester);

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

      expect(find.byType(SearchBar), findsOneWidget);
      final lista = find.byType(ListView).last;
      expect(
        find.descendant(of: lista, matching: find.text('Alfa FM')),
        findsOneWidget,
      );
      expect(
        find.descendant(of: lista, matching: find.text('Beta FM')),
        findsOneWidget,
      );

      await tester.enterText(find.byType(TextField).last, 'beta');
      await tester.pumpAndSettle();

      expect(
        find.descendant(of: lista, matching: find.text('Alfa FM')),
        findsNothing,
      );
      expect(
        find.descendant(of: lista, matching: find.text('Beta FM')),
        findsOneWidget,
      );
    },
  );

  testWidgets(
    'tambien existe un selector para la emisora de respaldo (S2-R9)',
    (tester) async {
      await _abrirEditor(tester);

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

      expect(find.byType(SearchBar), findsOneWidget);
    },
  );

  testWidgets('permite configurar la duracion del snooze (S2-R10)', (
    tester,
  ) async {
    final entorno = await _abrirEditor(tester);

    await tester.ensureVisible(find.text(l10n.alarmSnoozeDurationTitle));
    await tester.pumpAndSettle();
    expect(find.byType(SegmentedButton<int>), findsWidgets);

    await tester.tap(find.text(l10n.alarmSnoozeOptionLabel(10)));
    await tester.pumpAndSettle();

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

    expect(entorno.estadoAlarmas.alarmas.single.snoozeMinutos, 10);
  });

  testWidgets('el slider de volumen permite bajar hasta 0.0 (S2-R11)', (
    tester,
  ) async {
    await _abrirEditor(tester);

    final sliders = tester.widgetList<Slider>(find.byType(Slider));
    final volumen = sliders.firstWhere((slider) => slider.max == 1.0);
    expect(volumen.min, 0.0);
  });
}