Line data    Source code

       1              : // Copyright 2023 The terCAD team. All rights reserved.
       2              : // Use of this source code is governed by a CC BY-NC-ND 4.0 license that can be found in the LICENSE file.
       3              : 
       4              : import 'package:app_finance/_classes/herald/app_design.dart';
       5              : import 'package:app_finance/_classes/storage/app_preferences.dart';
       6              : import 'package:app_finance/l10n/app_localization.dart';
       7              : import 'package:app_finance/l10n/app_localization_en.dart';
       8              : import 'package:material_ui/material_ui.dart';
       9              : import 'package:flutter_currency_picker/flutter_currency_picker.dart';
      10              : 
      11              : class AppLocale extends ValueNotifier<Locale?> {
      12              :   static String code = 'en';
      13            9 :   static AppLocalizations labels = AppLocalizationsEn();
      14              : 
      15            3 :   AppLocale() : super(_initialLocale());
      16              : 
      17            1 :   static Locale? _initialLocale() {
      18            1 :     final prefCode = AppPreferences.get(AppPreferences.prefLocale);
      19            0 :     if (prefCode != null && prefCode.isNotEmpty) {
      20              :       code = prefCode;
      21              :     }
      22            1 :     return AppLocale.fromCode(code);
      23              :   }
      24              : 
      25            1 :   static Locale? fromCode(String value) {
      26              :     try {
      27            1 :       final keys = value.split('_');
      28            5 :       return Locale.fromSubtags(languageCode: keys.first, countryCode: keys.length > 1 ? keys.last : null);
      29              :     } catch (e) {
      30              :       return null;
      31              :     }
      32              :   }
      33              : 
      34            0 :   static Locale get() => AppLocale.fromCode(AppPreferences.get(AppPreferences.prefLocale) ?? '') ?? Locale('en', 'US');
      35              : 
      36            1 :   Future<void> set(String newValue, [Function? callback]) async {
      37            1 :     final loc = fromCode(newValue);
      38            3 :     if (loc != null && loc != value && AppLocalizations.supportedLocales.contains(loc)) {
      39            1 :       value = loc;
      40            2 :       code = value.toString();
      41            1 :       await AppPreferences.set(AppPreferences.prefLocale, newValue);
      42              :       CurrencyDefaults.defaultLocale = loc;
      43              :       if (callback != null) {
      44            0 :         callback();
      45              :       }
      46            1 :       notifyListeners();
      47              :     }
      48              :   }
      49              : 
      50            1 :   void updateState(BuildContext context) {
      51            1 :     final value = Localizations.localeOf(context).toString();
      52            0 :     labels = AppLocalizations.of(context) ?? AppLocalizationsEn();
      53            0 :     CurrencyProvider.initFromContext(context, locale: super.value);
      54            0 :     if (AppPreferences.get(AppPreferences.prefDesign) == null) {
      55            0 :       AppPreferences.set(AppPreferences.prefDesign, AppDesign.fromLocale(fromCode(value)));
      56              :     }
      57            0 :     set(value);
      58              :   }
      59              : }