import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

import 'api.dart';
import 'screens/home_screen.dart';
import 'screens/login_screen.dart';
import 'theme.dart';

void main() {
  final state = AppState(Api(http.Client()))..bootstrap();
  runApp(KcApp(state: state));
}

/// Minimal InheritedNotifier so screens can read `AppState.of(context)` and
/// rebuild on change — no third-party state management.
class AppScope extends InheritedNotifier<AppState> {
  const AppScope({super.key, required AppState state, required super.child})
      : super(notifier: state);

  static AppState of(BuildContext context) {
    final scope = context.dependOnInheritedWidgetOfExactType<AppScope>();
    assert(scope != null, 'AppScope missing above this widget');
    return scope!.notifier!;
  }
}

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

  @override
  Widget build(BuildContext context) {
    return AppScope(
      state: state,
      child: MaterialApp(
        title: 'KC-App',
        debugShowCheckedModeBanner: false,
        theme: buildKcTheme(),
        home: const _AuthGate(),
      ),
    );
  }
}

class _AuthGate extends StatelessWidget {
  const _AuthGate();

  @override
  Widget build(BuildContext context) {
    final state = AppScope.of(context);
    if (state.loading) {
      return const Scaffold(body: Center(child: CircularProgressIndicator()));
    }
    return state.isLoggedIn ? const HomeScreen() : const LoginScreen();
  }
}