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

import 'services/storage.dart';
import 'state/app_state.dart';
import 'ui/common.dart';
import 'ui/home_shell.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  // Portrait only; also set in AndroidManifest.xml and Info.plist.
  await SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
  final state = AppState(await Storage.open());
  runApp(DailyTechNewsApp(state: state));
  state.init();
}

class DailyTechNewsApp extends StatelessWidget {
  const DailyTechNewsApp({super.key, required this.state});

  final AppState state;

  static const _seed = Color(0xFF3355DD);

  @override
  Widget build(BuildContext context) {
    ThemeData theme(Brightness brightness) => ThemeData(
          colorScheme: ColorScheme.fromSeed(seedColor: _seed, brightness: brightness),
          cardTheme: const CardThemeData(margin: EdgeInsets.zero),
        );

    // Rebuild when the theme setting changes; everything else listens itself.
    return ListenableBuilder(
      listenable: state,
      builder: (context, _) => MaterialApp(
        title: appName,
        debugShowCheckedModeBanner: false,
        theme: theme(Brightness.light),
        darkTheme: theme(Brightness.dark),
        themeMode: state.settings.themeMode,
        home: HomeShell(state: state),
      ),
    );
  }
}