PIbd-32_Shabunov_O.A._MobileProgramming/lib/main.dart

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_android_app/presentation/favourites_bloc/favourites_bloc.dart';
import 'package:flutter_android_app/presentation/home_page/bloc/bloc.dart';
import 'package:flutter_android_app/presentation/home_page/home_page.dart';
import 'package:flutter_android_app/presentation/locale_bloc/locale_bloc.dart';
import 'package:flutter_android_app/presentation/locale_bloc/locale_state.dart';
import 'package:flutter_android_app/repositories/crypto_repository.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

import 'components/locale/l10n/app_localizations.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});
  
  @override
  Widget build(BuildContext context) {
    return BlocProvider<FavouritesBloc>(
      lazy: false,
      create: (context) => FavouritesBloc(),
      child: BlocProvider<LocaleBloc>(
        lazy: false,
        create: (context) => LocaleBloc(Locale(_getLangCode(Platform.localeName))),
        child: BlocBuilder<LocaleBloc, LocaleState>(
          builder: (context, state) =>  MaterialApp(
            title: 'Cryptocurrency Exchange App',
            locale: state.currentLocale,
            localizationsDelegates: AppLocale.localizationsDelegates,
            supportedLocales: AppLocale.supportedLocales,
            theme: ThemeData(
              colorScheme: ColorScheme.fromSeed(seedColor: Colors.indigoAccent),
              useMaterial3: true,
            ),
            debugShowCheckedModeBanner: false,
            home: RepositoryProvider<CryptoRepository>(
              lazy: true,
              create: (_) => CryptoRepository(),
              child: BlocProvider<HomeBloc>(
                lazy: false,
                create: (context) => HomeBloc(context.read<CryptoRepository>()),
                child: const MainScaffold(),
              ),
            ),
          ),
        ),
      ),
    );
  }

  String _getLangCode(String fullLocaleName) {
    int index = fullLocaleName.indexOf('_');
    return index != -1 ? fullLocaleName.substring(0, index) : fullLocaleName;
  }
}