import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'core/router.dart';
import 'core/theme.dart';
import 'state/session_controller.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  final prefs = await SharedPreferences.getInstance();

  SystemChrome.setSystemUIOverlayStyle(
    const SystemUiOverlayStyle(
      statusBarColor: Colors.transparent,
      statusBarIconBrightness: Brightness.light,
    ),
  );

  runApp(
    ProviderScope(
      overrides: [prefsProvider.overrideWithValue(prefs)],
      child: const KrowApp(),
    ),
  );
}

class KrowApp extends StatelessWidget {
  const KrowApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp.router(
      title: 'KROW Worker',
      debugShowCheckedModeBanner: false,
      theme: buildKrowTheme(),
      scrollBehavior: const KrowScrollBehavior(),
      routerConfig: router,
    );
  }
}

/// Scrolling feel, applied everywhere.
class KrowScrollBehavior extends MaterialScrollBehavior {
  const KrowScrollBehavior();

  /// Bouncing on every platform. The lists here sit under a pinned header, and
  /// a rubber-band edge shows you have reached the end of the content rather
  /// than the end of the screen — clamping just stops dead against the header.
  @override
  ScrollPhysics getScrollPhysics(BuildContext context) =>
      const BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics());

  /// Let the web and desktop builds be dragged with a mouse or trackpad, not
  /// only scrolled with a wheel.
  @override
  Set<PointerDeviceKind> get dragDevices => {
    PointerDeviceKind.touch,
    PointerDeviceKind.mouse,
    PointerDeviceKind.trackpad,
    PointerDeviceKind.stylus,
  };

  /// The bounce is the end-of-list signal; a glow on top of it is noise.
  @override
  Widget buildOverscrollIndicator(
    BuildContext context,
    Widget child,
    ScrollableDetails details,
  ) => child;
}