import 'dart:async';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import 'core/logging/app_log.dart';
import 'core/providers/theme_provider.dart';
import 'ui/theme/app_theme.dart';
import 'ui/screens/bt_picker/bt_picker_screen.dart';

void main() {
  runZonedGuarded(() {
    WidgetsFlutterBinding.ensureInitialized();

    // Catch every Dart-side error, log it (copyable from the Debug screen)
    // and keep the app running instead of showing a red/grey error screen.
    FlutterError.onError = (FlutterErrorDetails details) {
      AppLog.e('Flutter error', details.exception, details.stack);
    };
    WidgetsBinding.instance.platformDispatcher.onError = (error, stack) {
      AppLog.e('Uncaught platform error', error, stack);
      return true;
    };
    // Release only: keep Flutter's red error screen in debug builds so
    // layout/build errors stay visible during development.
    if (kReleaseMode) {
      ErrorWidget.builder = (FlutterErrorDetails details) => const Center(
            child: Padding(
              padding: EdgeInsets.all(16),
              child: Text(
                'Something went wrong on this screen.\n'
                'Open Debug → Copy log and send it to support.',
                textAlign: TextAlign.center,
                style: TextStyle(color: Colors.grey),
              ),
            ),
          );
    }

    AppLog.i('App start');
    runApp(const ProviderScope(child: HvbtApp()));
  }, (error, stack) {
    AppLog.e('Uncaught zone error', error, stack);
  });
}

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

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

    return MaterialApp(
      title: 'HV BT Dashboard',
      debugShowCheckedModeBanner: false,
      theme: AppTheme.build(themeVariant),
      home: const BtPickerScreen(),
    );
  }
}