import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/estado/estado_navegacion.dart';
import 'package:pluriwave/l10n/gen/app_localizations.dart';
import 'package:pluriwave/pantallas/pantalla_bienvenida.dart';
import 'package:provider/provider.dart';

/// WU17: `onboarding-welcome` spec — full-screen route (not a modal),
/// content only (logo/headline/body/3 bullets/1 CTA), binding
/// no-monetization guard, and CTA dismisses to Escuchar with the route
/// popped.
Widget _app({required EstadoNavegacionRaiz navegacion}) {
  return ChangeNotifierProvider<EstadoNavegacionRaiz>.value(
    value: navegacion,
    child: const MaterialApp(
      locale: Locale('es'),
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,
      home: PantallaBienvenida(),
    ),
  );
}

void main() {
  testWidgets(
    'renders as a full-screen route with a logo, headline, body copy, '
    'exactly 3 feature bullets, and exactly one primary CTA',
    (tester) async {
      final navegacion = EstadoNavegacionRaiz();
      addTearDown(navegacion.dispose);

      await tester.pumpWidget(_app(navegacion: navegacion));
      await tester.pumpAndSettle();

      // A full-screen route, never a modal dialog.
      expect(find.byType(Dialog), findsNothing);
      expect(find.byType(AlertDialog), findsNothing);
      expect(find.byType(Scaffold), findsOneWidget);

      expect(find.byType(Image), findsOneWidget, reason: 'the logo mark');
      expect(find.text('Tu mundo, en directo'), findsOneWidget);
      expect(
        find.textContaining('53.412 emisoras de 238 países'),
        findsOneWidget,
      );
      expect(
        find.byType(FilaCaracteristicaBienvenida),
        findsNWidgets(3),
        reason: 'exactly 3 feature bullets',
      );
      expect(
        find.byType(FilledButton),
        findsOneWidget,
        reason: 'exactly 1 primary CTA',
      );
      expect(find.text('Empezar a escuchar'), findsOneWidget);
    },
  );

  testWidgets('rendered content contains no monetization strings', (
    tester,
  ) async {
    final navegacion = EstadoNavegacionRaiz();
    addTearDown(navegacion.dispose);

    await tester.pumpWidget(_app(navegacion: navegacion));
    await tester.pumpAndSettle();

    final textoCompleto = tester
        .widgetList<Text>(find.byType(Text))
        .map((widget) => widget.data ?? '')
        .join('\n');

    expect(textoCompleto.contains('PRO'), isFalse);
    expect(textoCompleto.contains('€'), isFalse);
    expect(textoCompleto.contains(r'$'), isFalse);
    expect(
      RegExp(r'\d+\s*d[ií]as?\b', caseSensitive: false).hasMatch(
        textoCompleto,
      ),
      isFalse,
      reason: 'no day-count trial phrase (e.g. "14 días")',
    );
    expect(
      find.textContaining('gratuita', findRichText: true),
      findsNothing,
      reason: 'no secondary "free version" link',
    );
    expect(
      find.textContaining('gratis', findRichText: true),
      findsNothing,
      reason: 'no secondary "free version" link',
    );
    // Only one tappable action on the whole screen: the primary CTA.
    expect(find.byType(TextButton), findsNothing);
    expect(find.byType(FilledButton), findsOneWidget);
  });

  testWidgets(
    'tapping the primary CTA switches to Escuchar and pops the welcome route',
    (tester) async {
      // Start on a DIFFERENT tab so a pass actually proves irA() ran,
      // rather than coasting on EstadoNavegacionRaiz's own escuchar default.
      final navegacion = EstadoNavegacionRaiz()
        ..irA(RaizPluriWave.ajustes);
      addTearDown(navegacion.dispose);
      final navigatorKey = GlobalKey<NavigatorState>();

      await tester.pumpWidget(
        ChangeNotifierProvider<EstadoNavegacionRaiz>.value(
          value: navegacion,
          child: MaterialApp(
            navigatorKey: navigatorKey,
            locale: const Locale('es'),
            localizationsDelegates: AppLocalizations.localizationsDelegates,
            supportedLocales: AppLocalizations.supportedLocales,
            home: const Scaffold(body: Center(child: Text('home stand-in'))),
          ),
        ),
      );

      unawaited(
        navigatorKey.currentState!.push(
          MaterialPageRoute<void>(builder: (_) => const PantallaBienvenida()),
        ),
      );
      await tester.pumpAndSettle();
      expect(find.byType(PantallaBienvenida), findsOneWidget);

      await tester.tap(find.text('Empezar a escuchar'));
      await tester.pumpAndSettle();

      expect(navegacion.actual, RaizPluriWave.escuchar);
      expect(
        find.byType(PantallaBienvenida),
        findsNothing,
        reason: 'the welcome route was removed from the back stack',
      );
      expect(find.text('home stand-in'), findsOneWidget);
    },
  );
}