import 'dart:ui' show PlatformDispatcher;

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

import 'app.dart';
import 'core/locale/language_provider.dart';
import 'core/storage/local_preferences.dart';
import 'core/storage/local_preferences_provider.dart';
import 'firebase_options.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

  final sharedPreferences = await SharedPreferences.getInstance();

  // Detect system language on first launch.
  const supportedLanguageCodes = {
    'en', 'ru', 'es', 'de', 'fr', 'it', 'pt', 'zh', 'ja', 'ko', 'ar', 'hi',
  };
  final systemLanguageCode = PlatformDispatcher.instance.locale.languageCode;
  final initialLanguage = supportedLanguageCodes.contains(systemLanguageCode)
      ? systemLanguageCode
      : 'en';

  runApp(
    ProviderScope(
      overrides: [
        localPreferencesProvider.overrideWithValue(
          LocalPreferences(sharedPreferences),
        ),
        languageProvider.overrideWith((ref) => initialLanguage),
      ],
      child: const App(),
    ),
  );
}