import 'dart:ui' as ui;

import 'package:flutter/material.dart';

import 'package:aslan/chatvibe_core/constants/at_global_config.dart';
import 'package:aslan/chatvibe_data/sources/local/data_persistence.dart';

class LocalizationManager with ChangeNotifier {
  static const List<String> _supportedLanguageCodes = [
    'en',
    'ar',
    'tr',
    'bn',
    'id',
    'fil',
    'ur',
    'hi',
  ];

  Locale? _locale;

  Locale? get locale => _locale;

  LocalizationManager() {
    init();
  }

  init() {
    String language = DataPersistence.getLang();
    if (language.isEmpty) {
      Locale systemLocale = ui.PlatformDispatcher.instance.locale;
      _locale = Locale(_normalizeLanguageCode(systemLocale.languageCode), '');
    } else {
      _locale = Locale(_normalizeLanguageCode(language), '');
    }
    if (_locale != null) {
      setLocale(_locale!);
    }
  }

  String _normalizeLanguageCode(String languageCode) {
    if (languageCode.startsWith("ar")) {
      return 'ar';
    }
    if (languageCode == 'tl') {
      return 'fil';
    }
    if (_supportedLanguageCodes.contains(languageCode)) {
      return languageCode;
    }
    return 'en';
  }

  void setLocale(Locale locale) {
    _locale = locale;
    ATGlobalConfig.lang = locale.languageCode;
    DataPersistence.setLang(locale.languageCode);
    notifyListeners();
  }
}