import 'dart:async';

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/modelos/emisora.dart';
import 'package:pluriwave/pantallas/pantalla_alarma_sonando.dart';
import 'package:pluriwave/servicios/servicio_alarmas.dart';
import 'package:pluriwave/servicios/servicio_audio.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,
    required this.android,
    required this.audio,
  });

  final EstadoAlarmas estadoAlarmas;
  final FakePuertoAlarmasAndroid android;
  final FakeServicioAudio audio;
}

Future<_Entorno> _montarPantalla(
  WidgetTester tester, {
  int snoozeMinutos = 5,
  int fadeInSegundos = 0,
}) async {
  tester.view.physicalSize = const Size(1440, 3200);
  tester.view.devicePixelRatio = 1.0;
  addTearDown(tester.view.resetPhysicalSize);
  addTearDown(tester.view.resetDevicePixelRatio);

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

  final android = FakePuertoAlarmasAndroid();
  // Mutable clock: the alarm is saved at 7:00 and the screen mounts at ring
  // time (7:30:10), so snooze anchors to the RINGING occurrence — the only
  // scenario the ringing screen can exist in.
  var ahora = DateTime(2026, 6, 11, 7, 0);
  final estadoAlarmas = EstadoAlarmas(
    servicio: ServicioAlarmas(reloj: () => ahora),
    android: android,
    iniciarAutomaticamente: false,
  );
  addTearDown(estadoAlarmas.dispose);
  addTearDown(android.dispose);
  await estadoAlarmas.guardarAlarma(
    AlarmaMusical(
      id: 'ring1',
      nombre: 'Despertar',
      hora: 7,
      minuto: 30,
      tipoProgramacion: TipoProgramacionAlarma.diaria,
      diasSemana: const [],
      snoozeMinutos: snoozeMinutos,
      fadeInSegundos: fadeInSegundos,
      emisora: const Emisora(
        uuid: 'e1',
        nombre: 'Radio Uno',
        url: 'https://radio.example/stream',
      ),
    ),
  );
  // The screen mounts at ring time: 10s after the 7:30 occurrence fired.
  ahora = DateTime(2026, 6, 11, 7, 30, 10);

  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 SizedBox.shrink(),
      ),
    ),
  );
  final navigator = tester.state<NavigatorState>(find.byType(Navigator));
  unawaited(
    navigator.push(
      MaterialPageRoute<void>(
        builder:
            (_) =>
                PantallaAlarmaSonando(alarma: estadoAlarmas.alarmas.single),
        fullscreenDialog: true,
      ),
    ),
  );
  await tester.pumpAndSettle();
  return _Entorno(estadoAlarmas: estadoAlarmas, android: android, audio: audio);
}

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

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

  testWidgets(
    'muestra botones de posponer 3/5/10 mas el personalizado (S2-R1-A/C)',
    (tester) async {
      await _montarPantalla(tester, snoozeMinutos: 7);

      expect(find.text(l10n.alarmSnoozeOptionLabel(3)), findsOneWidget);
      expect(find.text(l10n.alarmSnoozeOptionLabel(5)), findsOneWidget);
      expect(find.text(l10n.alarmSnoozeOptionLabel(7)), findsOneWidget);
      expect(find.text(l10n.alarmSnoozeOptionLabel(10)), findsOneWidget);
      expect(find.text(l10n.stopAlarmAction), findsOneWidget);
    },
  );

  testWidgets(
    'no duplica el boton cuando snoozeMinutos coincide con una opcion fija',
    (tester) async {
      await _montarPantalla(tester, snoozeMinutos: 5);

      expect(find.text(l10n.alarmSnoozeOptionLabel(3)), findsOneWidget);
      expect(find.text(l10n.alarmSnoozeOptionLabel(5)), findsOneWidget);
      expect(find.text(l10n.alarmSnoozeOptionLabel(10)), findsOneWidget);
    },
  );

  testWidgets(
    'posponer 5 min pospone la alarma y cierra la pantalla (S2-R1-B)',
    (tester) async {
      final entorno = await _montarPantalla(tester, snoozeMinutos: 5);

      await tester.tap(find.text(l10n.alarmSnoozeOptionLabel(5)));
      await tester.pumpAndSettle();

      final alarma = entorno.estadoAlarmas.alarmas.single;
      expect(alarma.snoozeHasta, DateTime(2026, 6, 11, 7, 35));
      expect(find.byType(PantallaAlarmaSonando), findsNothing);
      // posponerAlarma oculta la notificacion nativa (mismo stop path que
      // el boton de detener) y reprograma con el snooze.
      expect(entorno.android.ocultadas, contains('ring1'));
      expect(
        entorno.android.programadas.last.snoozeHasta,
        DateTime(2026, 6, 11, 7, 35),
      );
    },
  );

  group('salidas del ring fuera de los botones', () {
    testWidgets(
      'el boton atras del sistema se comporta como Detener: finaliza la '
      'ejecucion y cierra',
      (tester) async {
        final entorno = await _montarPantalla(tester);

        // Simulate the SYSTEM back (routes through PopScope via the
        // binding), not a direct Navigator.pop: a plain pop only runs
        // dispose(), which would leave no alarm UI anywhere to stop the
        // ring (native audio teardown is driven by finalizarEjecucion, the
        // same path Detener uses).
        await tester.binding.handlePopRoute();
        await tester.pumpAndSettle();

        expect(find.byType(PantallaAlarmaSonando), findsNothing);
        expect(
          entorno.android.ocultadas,
          contains('ring1'),
          reason:
              'atras debe finalizar la ejecucion (mismo camino que Detener)',
        );
      },
    );
  });
}