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

import 'data/hub_endpoint.dart';
import 'data/hub_repository.dart';
import 'data/repository.dart';
import 'pages/landing_page.dart';
import 'theme/reclaim_theme.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  // Acquiring settings + probing the hub must never prevent the
  // first frame. Any failure here falls back to demo data so the
  // app always paints instead of hanging on a blank page.
  HubSettings settings;
  EvaluationRepository repository;
  try {
    settings = await HubSettings.load();
    repository = await _pickRepository(settings);
  } catch (_) {
    settings = const HubSettings(
      host: HubSettings.defaultHost,
      port: HubSettings.defaultPort,
      secure: false,
    );
    repository = const MockRepository();
  }
  runApp(ReclaimApp(repository: repository, settings: settings));
}

/// Decide which repository to start with.
///
///   useHub=false           → MockRepository, explicit opt-in to
///                            demo data via the Hub-Reiter.
///   useHub=true            → HubRepository regardless of probe
///                            outcome. When unhealthy the
///                            repository's list() returns [] and
///                            the ModeBanner shows 'hub-down' —
///                            no silent mock fallback that would
///                            quietly demote the app to demo
///                            mode.
Future<EvaluationRepository> _pickRepository(HubSettings settings) async {
  if (!settings.useHub) return const MockRepository();
  return HubRepository.connect(settings);
}

class ReclaimApp extends StatelessWidget {
  const ReclaimApp({
    super.key,
    this.repository = const MockRepository(),
    this.settings,
  });

  final EvaluationRepository repository;
  final HubSettings? settings;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Recl∆Im',
      debugShowCheckedModeBanner: false,
      theme: ReclaimTheme.light(),
      darkTheme: ReclaimTheme.dark(),
      themeMode: ThemeMode.dark,
      localizationsDelegates: const [
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      supportedLocales: const [Locale('de'), Locale('en')],
      home: LandingPage(repository: repository),
    );
  }
}