import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_android_app/presentation/currency_bloc/currency_bloc.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 StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool isDarkMode = false;

  @override
  Widget build(BuildContext context) {
    return BlocProvider<FavouritesBloc>(
      lazy: false,
      create: (context) => FavouritesBloc(),
      child: BlocProvider<CurrencyBloc>(
        lazy: false,
        create: (context) => CurrencyBloc(),
        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,
                  brightness: isDarkMode ? Brightness.dark : Brightness.light,
                ),
                useMaterial3: true,
                brightness: isDarkMode ? Brightness.dark : Brightness.light,
              ),
              debugShowCheckedModeBanner: false,
              home: RepositoryProvider<CryptoRepository>(
                lazy: true,
                create: (_) => CryptoRepository(),
                child: BlocProvider<HomeBloc>(
                  lazy: false,
                  create: (context) => HomeBloc(context.read<CryptoRepository>()),
                  child: MainScaffold(
                    toggleDarkMode: _toggleDarkMode,
                    isDarkModeSelected: isDarkMode,
                  ),
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }

  void _toggleDarkMode() {
    setState(() {
      isDarkMode = !isDarkMode;
    });
  }

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