import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter_quill/flutter_quill.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import 'routing/app_router.dart';
import 'models/profile.dart';
import 'providers/profile_provider.dart';
import 'services/background_location_service.dart';
import 'theme/app_theme.dart';
import 'utils/snackbar.dart';

class TasqApp extends ConsumerWidget {
  const TasqApp({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final router = ref.watch(appRouterProvider);

    // Ensure background service is running if the profile indicates tracking.
    // This handles the case where the app restarts while tracking was already
    // enabled (service should persist, but this guarantees it). It also stops
    // the service when tracking is disabled externally.
    ref.listen<AsyncValue<Profile?>>(currentProfileProvider, (
      previous,
      next,
    ) async {
      final profile = next.valueOrNull;
      final allow = profile?.allowTracking ?? false;
      if (allow) {
        await startBackgroundLocationUpdates();
      } else {
        await stopBackgroundLocationUpdates();
      }
    });

    return MaterialApp.router(
      title: 'TasQ',
      routerConfig: router,
      scaffoldMessengerKey: scaffoldMessengerKey,
      theme: AppTheme.light(),
      darkTheme: AppTheme.dark(),
      themeMode: ThemeMode.system,
      localizationsDelegates: const [
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
        FlutterQuillLocalizations.delegate,
      ],
    );
  }
}