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import 'package:audio_service/audio_service.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:just_audio/just_audio.dart';
import 'providers/audio_handler_provider.dart';
import 'providers/progress_queue_provider.dart';
import 'providers/theme_provider.dart';
import 'router.dart';
import 'services/audio_handler.dart';
// ---------------------------------------------------------------------------
// Entry point
// ---------------------------------------------------------------------------
/// Entry point.
///
/// [AudioService.init] must be called before [runApp] so that the handler is
/// registered before any widget tries to obtain it via [audioHandlerProvider].
///
/// The handler is injected into [ProviderScope] via an override rather than
/// stored in a global variable, keeping the dependency explicit and testable
/// (Dependency Inversion Principle: the provider file does not need to import
/// `main.dart`; the composition root wires the graph).
void main() async {
// Ensure platform channels are ready before calling AudioService.init.
WidgetsFlutterBinding.ensureInitialized();
// Register the PlayerAudioHandler as the singleton media session handler.
// AudioService.init<T> returns the exact T from the builder. We pass it
// directly into ProviderScope so [audioHandlerProvider] is resolved without
// any global mutable state.
final handler = await AudioService.init<PlayerAudioHandler>(
builder: () => PlayerAudioHandler(AudioPlayer()),
config: const AudioServiceConfig(
// Notification channel name shown in Android Settings → App info.
androidNotificationChannelName: 'Player Audio',
// Keep the service alive while the notification is visible so the OS
// does not kill the process when the user swipes the app away.
androidStopForegroundOnPause: false,
// Allow the user to swipe away the notification to stop playback (UX
// expectation on Android — mirrors Spotify / Podcast Addict behaviour).
androidNotificationOngoing: false,
),
);
// Create the ProviderScope first so we can read providers before runApp.
// The scope is then passed to PlayerAndroidApp so it is the single root.
final container = ProviderContainer(
overrides: [audioHandlerProvider.overrideWithValue(handler)],
);
// Initialise the offline progress queue (opens SQLite DB, subscribes to
// connectivity). Must be done before any player screen opens so that the
// queue is ready to accept enqueue calls immediately.
await container.read(progressQueueProvider).init();
runApp(
UncontrolledProviderScope(
container: container,
child: const PlayerAndroidApp(),
),
);
}
// ---------------------------------------------------------------------------
// Module-level theme constants
// ---------------------------------------------------------------------------
// Built once at startup rather than on every rebuild of PlayerAndroidApp.
// ThemeData construction is not cheap, and the colour tokens never change
// at runtime — only the active ThemeMode (light/dark/system) does.
final _lightTheme = buildLightTheme();
final _darkTheme = buildDarkTheme();
// ---------------------------------------------------------------------------
// Root widget
// ---------------------------------------------------------------------------
/// Root application widget.
///
/// Uses [ConsumerWidget] to read [routerProvider] and [themeProvider] from
/// Riverpod so that the same [GoRouter] instance and the persisted [ThemeMode]
/// are both available without additional state management in the widget itself.
///
/// [MaterialApp.router] delegates all navigation decisions to go_router.
/// [themeMode] is driven by [themeProvider] so the user's light/dark preference
/// takes effect immediately on every screen and survives app restarts.
class PlayerAndroidApp extends ConsumerWidget {
const PlayerAndroidApp({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final router = ref.watch(routerProvider);
// Default to ThemeMode.system while the preference is loading so the app
// does not flash an incorrect theme during startup.
final themeMode =
ref.watch(themeProvider).valueOrNull ?? ThemeMode.system;
return MaterialApp.router(
title: 'Player',
routerConfig: router,
// Material 3 is enabled in both ThemeData instances; see theme_provider.dart.
theme: _lightTheme,
darkTheme: _darkTheme,
themeMode: themeMode,
);
}
}
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