pluriwave/lib/main.dart

import 'dart:async';
import 'dart:ui' as ui;

import 'package:audio_service/audio_service.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'app.dart';
import 'servicios/navegacion_auto.dart';
import 'servicios/servicio_audio.dart';
import 'servicios/servicio_audio_session.dart';
import 'tema/pluriwave_tokens.dart';

const _anchoMinimoLandscape = 600.0;

/// Branded monochrome status-bar icon, replacing the default full-color
/// launcher silhouette fallback.
const androidNotificationIconResource = 'drawable/ic_stat_pluriwave';

/// S5-R8: media notification accent uses the brand color, not the M3
/// default purple. Top-level const so tests can assert it.
const configuracionAudioService = AudioServiceConfig(
  androidNotificationChannelId: 'es.freetimelab.pluriwave.audio',
  androidNotificationChannelName: 'PluriWave Radio',
  androidNotificationOngoing: true,
  androidStopForegroundOnPause: true,
  notificationColor: PluriWaveTokens.brand,
  androidNotificationIcon: androidNotificationIconResource,
);

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await _aplicarPoliticaOrientacion();

  // S3-R4: single SharedPreferences instance resolved once at startup and
  // injected into every state/service below.
  final prefs = await SharedPreferences.getInstance();

  final handler = await AudioService.init(
    builder: () => PluriWaveAudioHandler(),
    config: configuracionAudioService,
  );
  registrarHandler(handler);

  // Android Auto browse source (Design "getChildren data source, cold-start
  // safe") — registered before EstadoRadio builds so a headless Auto bind
  // (main() runs but the lazily-created Provider tree may never build) can
  // still serve favourites/custom stations from local reads.
  final fuenteAuto = FuenteEmisorasAutoLocal();
  registrarFuenteNavegacion(fuenteAuto);

  // S3-R1: audio focus — phone calls / transient losses pause or duck the
  // radio; headphones unplugged pauses it.
  final sesionAudio = ServicioAudioSession(objetivo: handler);
  unawaited(sesionAudio.configurar());

  runApp(
    _OrientacionResponsiveApp(
      child: PluriWaveApp(prefs: prefs, fuenteAuto: fuenteAuto),
    ),
  );
}

Future<void> _aplicarPoliticaOrientacion([ui.Display? display]) async {
  final vista =
      WidgetsBinding.instance.platformDispatcher.views.isNotEmpty
          ? WidgetsBinding.instance.platformDispatcher.views.first
          : null;
  final displayActivo = display ?? vista?.display;
  if (displayActivo == null) return;

  final anchoLogico = displayActivo.size.width / displayActivo.devicePixelRatio;
  if (anchoLogico < _anchoMinimoLandscape) {
    await SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
    return;
  }

  await SystemChrome.setPreferredOrientations(DeviceOrientation.values);
}

class _OrientacionResponsiveApp extends StatefulWidget {
  const _OrientacionResponsiveApp({required this.child});

  final Widget child;

  @override
  State<_OrientacionResponsiveApp> createState() =>
      _OrientacionResponsiveAppState();
}

class _OrientacionResponsiveAppState extends State<_OrientacionResponsiveApp>
    with WidgetsBindingObserver {
  ui.Display? _display;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    _display = View.maybeOf(context)?.display;
    unawaited(_aplicarPoliticaOrientacion(_display));
  }

  @override
  void didChangeMetrics() {
    unawaited(_aplicarPoliticaOrientacion(_display));
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) => widget.child;
}