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:pluriwave/widgets/pluri_push_scaffold.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;
}

class _EntornoDosAlarmas {
  _EntornoDosAlarmas({required this.estadoAlarmas, required this.android});

  final EstadoAlarmas estadoAlarmas;
  final FakePuertoAlarmasAndroid android;
}

/// WU8 fixture: two DAILY alarms ('r1' 07:00, 'r2' 08:00) under a FIXED clock
/// (06:00, before both) so 'r1' is deterministically the featured/soonest
/// alarm regardless of the wall-clock time the suite happens to run at.
Future<_EntornoDosAlarmas> _montarDosAlarmas(WidgetTester tester) async {
  tester.view.physicalSize = const Size(1440, 3200);
  tester.view.devicePixelRatio = 1.0;
  addTearDown(tester.view.resetPhysicalSize);
  addTearDown(tester.view.resetDevicePixelRatio);

  final radio = EstadoRadio(
    audio: FakeServicioAudio(),
    favoritos: FakeServicioFavoritos(),
    radio: FakeServicioRadio(),
    servicioEcualizador: FakeServicioEcualizador(),
    servicioGrabacion: FakeServicioGrabacionRadioInactiva(),
    iniciarAutomaticamente: false,
  );
  addTearDown(radio.dispose);

  final android = FakePuertoAlarmasAndroid();
  final estadoAlarmas = EstadoAlarmas(
    servicio: ServicioAlarmas(reloj: () => DateTime(2026, 6, 1, 6, 0)),
    android: android,
    iniciarAutomaticamente: false,
  );
  addTearDown(estadoAlarmas.dispose);
  addTearDown(android.dispose);
  await estadoAlarmas.guardarAlarma(
    const AlarmaMusical(
      id: 'r1',
      nombre: 'Primera',
      hora: 7,
      minuto: 0,
      tipoProgramacion: TipoProgramacionAlarma.diaria,
      diasSemana: [],
    ),
  );
  await estadoAlarmas.guardarAlarma(
    const AlarmaMusical(
      id: 'r2',
      nombre: 'Segunda',
      hora: 8,
      minuto: 0,
      tipoProgramacion: TipoProgramacionAlarma.diaria,
      diasSemana: [],
    ),
  );

  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();

  return _EntornoDosAlarmas(estadoAlarmas: estadoAlarmas, android: android);
}

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();

  // WU8: the always-visible "Edit" button is gone — tapping the simplified
  // card itself now opens the editor.
  final tarjeta = find.byKey(const ValueKey('tarjeta-alarma-ed1'));
  await tester.ensureVisible(tarjeta);
  await tester.pumpAndSettle();
  await tester.tap(tarjeta);
  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);
  });

  group('WU8 — tarjeta de alarma simplificada', () {
    testWidgets(
      'tocar la tarjeta abre el editor precargado con los datos de esa '
      'alarma',
      (tester) async {
        await _montarDosAlarmas(tester);

        await tester.tap(find.byKey(const ValueKey('tarjeta-alarma-r2')));
        await tester.pumpAndSettle();

        expect(find.text(l10n.editAlarmTitle), findsOneWidget);
        expect(find.text('Segunda'), findsOneWidget);
      },
    );

    testWidgets('deslizar la tarjeta pide confirmacion; cancelar la conserva y '
        'confirmar la elimina', (tester) async {
      final entorno = await _montarDosAlarmas(tester);

      // Cancelar: la tarjeta se conserva.
      await tester.drag(
        find.byKey(const ValueKey('tarjeta-alarma-r2')),
        const Offset(-600, 0),
      );
      await tester.pumpAndSettle();
      expect(find.text(l10n.alarmDeleteConfirmTitle), findsOneWidget);
      await tester.tap(find.text(l10n.cancelAction));
      await tester.pumpAndSettle();
      expect(entorno.estadoAlarmas.alarmas.length, 2);
      expect(find.byKey(const ValueKey('tarjeta-alarma-r2')), findsOneWidget);

      // Confirmar: la tarjeta se elimina.
      await tester.drag(
        find.byKey(const ValueKey('tarjeta-alarma-r2')),
        const Offset(-600, 0),
      );
      await tester.pumpAndSettle();
      expect(find.text(l10n.alarmDeleteConfirmTitle), findsOneWidget);
      await tester.tap(find.text(l10n.deleteAction));
      await tester.pumpAndSettle();

      expect(entorno.estadoAlarmas.alarmas.length, 1);
      expect(find.byKey(const ValueKey('tarjeta-alarma-r2')), findsNothing);
    });

    testWidgets(
      'el banner destacado permite saltar la alarma mas proxima (accion '
      '"Saltar")',
      (tester) async {
        final entorno = await _montarDosAlarmas(tester);
        final proximaAntes = entorno.estadoAlarmas.proximaAlarma;
        expect(proximaAntes?.id, 'r1');

        await tester.tap(find.byKey(const ValueKey('hero-skip-next')));
        await tester.pumpAndSettle();

        expect(find.byType(SnackBar), findsOneWidget);
        final r1 = entorno.estadoAlarmas.alarmas.firstWhere(
          (a) => a.id == 'r1',
        );
        expect(r1.proximaEjecucion, isNot(proximaAntes!.proximaEjecucion));
      },
    );

    testWidgets('la fila resumen de vacaciones empuja una pantalla al tocarla '
        '(destino provisorio; WU9 lo reemplaza)', (tester) async {
      await _montarDosAlarmas(tester);

      await tester.tap(find.byKey(const ValueKey('vacaciones-resumen')));
      await tester.pumpAndSettle();

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

    testWidgets(
      'guardia de capacidad: editar (tap), saltar (hero) y eliminar (swipe) '
      'siguen siendo alcanzables tras la simplificacion de la tarjeta',
      (tester) async {
        final entorno = await _montarDosAlarmas(tester);

        // 1) Saltar, desde el banner destacado.
        await tester.tap(find.byKey(const ValueKey('hero-skip-next')));
        await tester.pumpAndSettle();
        expect(find.byType(SnackBar), findsOneWidget);

        // 2) Editar, tocando la tarjeta.
        await tester.tap(find.byKey(const ValueKey('tarjeta-alarma-r2')));
        await tester.pumpAndSettle();
        expect(find.text(l10n.editAlarmTitle), findsOneWidget);
        await tester.tap(find.byIcon(Icons.close_rounded));
        await tester.pumpAndSettle();

        // 3) Eliminar, deslizando y confirmando.
        await tester.drag(
          find.byKey(const ValueKey('tarjeta-alarma-r2')),
          const Offset(-600, 0),
        );
        await tester.pumpAndSettle();
        await tester.tap(find.text(l10n.deleteAction));
        await tester.pumpAndSettle();

        expect(entorno.estadoAlarmas.alarmas.length, 1);
      },
    );
  });
}