import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/estado/estado_alarmas.dart';
import 'package:pluriwave/estado/estado_busqueda.dart';
import 'package:pluriwave/estado/estado_ecualizador.dart';
import 'package:pluriwave/estado/estado_grabacion.dart';
import 'package:pluriwave/estado/estado_idioma.dart';
import 'package:pluriwave/estado/estado_radio.dart';
import 'package:pluriwave/l10n/gen/app_localizations.dart';
import 'package:pluriwave/pantallas/pantalla_ajustes.dart';
import 'package:pluriwave/pantallas/pantalla_alarmas.dart';
import 'package:pluriwave/pantallas/pantalla_buscar.dart';
import 'package:pluriwave/pantallas/pantalla_favoritos.dart';
import 'package:pluriwave/pantallas/pantalla_inicio.dart';
import 'package:pluriwave/servicios/servicio_alarmas.dart';
import 'package:pluriwave/widgets/pluri_root_header.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

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

/// S1 (Tier 1 visual fidelity): `app.dart`'s `PluriWaveScaffold(appBar:
/// AppBar(...))` is gone — every root now draws its own [PluriRootHeader]
/// instead, matching the prototype (no screen in `t4` shows a global
/// `AppBar`). [PluriRootHeader]'s own title text is asserted via
/// `find.descendant` throughout — see `pluri_screen_header_retired_test.dart`
/// for S2's separate assertion that the old glass-hero subtitle is gone.
///
/// Pre-existing project constraint (see `pantalla_ajustes_test.dart`):
/// PluriGlassSurface paints a background over ListTile's ink layer, which
/// Flutter flags as a warning-level assertion, not a correctness bug.
void _suppressListTileInkAssertion() {
  final original = FlutterError.onError;
  FlutterError.onError = (details) {
    if (details.exceptionAsString().contains(
      'ListTile background color or ink splashes may be invisible',
    )) {
      return;
    }
    original?.call(details);
  };
  addTearDown(() => FlutterError.onError = original);
}

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

  Future<File> archivoCustomVacio() async => File(
    '${Directory.current.path}/test/fixtures/emisoras_custom_vacio.json',
  );

  EstadoRadio crearEstadoRadio() => EstadoRadio(
    audio: FakeServicioAudio(),
    favoritos: FakeServicioFavoritos(),
    radio: FakeServicioRadio(),
    servicioEcualizador: FakeServicioEcualizador(),
    servicioGrabacion: FakeServicioGrabacionRadioInactiva(),
    resolverArchivoCustom: archivoCustomVacio,
    iniciarAutomaticamente: false,
  );

  Widget testApp(EstadoRadio estado, Widget body, {EstadoAlarmas? alarmas}) {
    return MultiProvider(
      providers: [
        ChangeNotifierProvider<EstadoRadio>.value(value: estado),
        ListenableProvider<EstadoEcualizador>.value(value: estado.ecualizador),
        ListenableProvider<EstadoGrabacion>.value(value: estado.grabacion),
        ListenableProvider<EstadoBusqueda>.value(value: estado.busqueda),
        ChangeNotifierProvider<EstadoIdioma>.value(value: EstadoIdioma()),
        if (alarmas != null)
          ChangeNotifierProvider<EstadoAlarmas>.value(value: alarmas),
      ],
      child: MaterialApp(
        locale: const Locale('en'),
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        supportedLocales: AppLocalizations.supportedLocales,
        home: Scaffold(body: body),
      ),
    );
  }

  void setLargeSurface(WidgetTester tester) {
    tester.view.physicalSize = const Size(1440, 3200);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);
  }

  Future<void> pumpStable(WidgetTester tester) async {
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 100));
  }

  Finder titleInHeader(String title) => find.descendant(
    of: find.byType(PluriRootHeader),
    matching: find.text(title),
  );

  testWidgets(
    'Escuchar is the documented header exception: a 52px "now listening" '
    'eyebrow instead of a PluriRootHeader title row, and still no AppBar',
    (tester) async {
      // The prototype gives Escuchar a STRUCTURALLY different header from
      // every other root (t4 line 53 vs line 325): 52px rather than 56, an
      // eyebrow at 15px/w800/55% opacity rather than a 23px title, and
      // trailing actions rather than a CTA. This test originally asserted
      // `PluriRootHeader` on all five roots — an over-broad premise, since
      // Escuchar's header was never a title row in the design.
      //
      // What still holds unconditionally, and is what this guards: no
      // AppBar anywhere (systemic item S1), and the sleep-timer action that
      // used to live in the removed global chrome is still reachable here.
      _suppressListTileInkAssertion();
      setLargeSurface(tester);
      final estado = crearEstadoRadio();
      addTearDown(estado.dispose);

      await tester.pumpWidget(testApp(estado, const PantallaInicio()));
      await pumpStable(tester);

      expect(find.byType(AppBar), findsNothing);
      expect(
        find.byType(PluriRootHeader),
        findsNothing,
        reason: 'Escuchar uses its own eyebrow header, not the shared one',
      );
      expect(find.text('Now listening'), findsOneWidget);
      expect(
        find.byIcon(Icons.bedtime_outlined),
        findsOneWidget,
        reason: 'the sleep-timer action survived the global AppBar removal',
      );
    },
  );

  testWidgets(
    'Buscar draws its own PluriRootHeader with the search title, no AppBar',
    (tester) async {
      _suppressListTileInkAssertion();
      setLargeSurface(tester);
      final estado = crearEstadoRadio();
      addTearDown(estado.dispose);

      await tester.pumpWidget(testApp(estado, const PantallaBuscar()));
      await pumpStable(tester);

      expect(find.byType(PluriRootHeader), findsOneWidget);
      expect(titleInHeader('Search signal'), findsOneWidget);
      expect(find.byType(AppBar), findsNothing);
    },
  );

  testWidgets(
    'Favoritos (empty state) draws its own PluriRootHeader, no AppBar',
    (tester) async {
      _suppressListTileInkAssertion();
      setLargeSurface(tester);
      final estado = crearEstadoRadio();
      addTearDown(estado.dispose);

      await tester.pumpWidget(testApp(estado, const PantallaFavoritos()));
      await pumpStable(tester);

      expect(find.byType(PluriRootHeader), findsOneWidget);
      expect(titleInHeader('Favorites'), findsOneWidget);
      expect(find.byType(AppBar), findsNothing);
    },
  );

  testWidgets('Alarmas draws its own PluriRootHeader, no AppBar', (
    tester,
  ) async {
    _suppressListTileInkAssertion();
    setLargeSurface(tester);
    final estado = crearEstadoRadio();
    final alarmas = EstadoAlarmas(
      servicio: ServicioAlarmas(reloj: () => DateTime(2026, 6, 1, 6, 0)),
      android: FakePuertoAlarmasAndroid(),
      iniciarAutomaticamente: false,
    );
    addTearDown(estado.dispose);
    addTearDown(alarmas.dispose);

    await tester.pumpWidget(
      testApp(estado, const PantallaAlarmas(), alarmas: alarmas),
    );
    await pumpStable(tester);

    expect(find.byType(PluriRootHeader), findsOneWidget);
    expect(titleInHeader('Music wake-up'), findsOneWidget);
    expect(find.byType(AppBar), findsNothing);
  });

  testWidgets(
    'Ajustes draws its own PluriRootHeader, no AppBar, and its bedtime '
    'action opens the sleep-timer sheet',
    (tester) async {
      _suppressListTileInkAssertion();
      setLargeSurface(tester);
      final estado = crearEstadoRadio();
      addTearDown(estado.dispose);

      await tester.pumpWidget(testApp(estado, const PantallaAjustes()));
      await pumpStable(tester);

      expect(find.byType(PluriRootHeader), findsOneWidget);
      expect(titleInHeader('Settings'), findsOneWidget);
      expect(find.byType(AppBar), findsNothing);

      await tester.tap(find.byIcon(Icons.bedtime_outlined));
      await pumpStable(tester);

      // Not `find.text('Sleep timer')` — Ajustes' own "Sleep timer"
      // FilaAjuste row (`l10n.timerSectionTitle`) coincidentally shares the
      // exact same string as `l10n.sleepTimer`. The description line is
      // unique to the sheet this action opens.
      expect(
        find.text('Smooth radio shutdown with an exact countdown.'),
        findsOneWidget,
      );
    },
  );
}