localizations, dark mode touchups

2026-07-08 21:58:04 +02:00 · 2025-08-31 11:16:20 -05:00
parent 8381388ffa
commit fa6b6ffcda
17 changed files with 598 additions and 191 deletions
@@ -0,0 +1,122 @@
+import 'dart:convert';
+import 'dart:io';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class LocalizationService extends ChangeNotifier {
+  static LocalizationService? _instance;
+  static LocalizationService get instance => _instance ??= LocalizationService._();
+  
+  LocalizationService._();
+
+  String _currentLanguage = 'en';
+  Map<String, dynamic> _strings = {};
+  List<String> _availableLanguages = [];
+
+  String get currentLanguage => _currentLanguage;
+  List<String> get availableLanguages => _availableLanguages;
+
+  Future<void> init() async {
+    await _discoverAvailableLanguages();
+    await _loadSavedLanguage();
+    await _loadStrings();
+  }
+
+  Future<void> _discoverAvailableLanguages() async {
+    // For now, we'll hardcode the languages we support
+    // In the future, this could scan the assets directory
+    _availableLanguages = ['en', 'es', 'fr', 'de'];
+  }
+
+  Future<void> _loadSavedLanguage() async {
+    final prefs = await SharedPreferences.getInstance();
+    final savedLanguage = prefs.getString('language_code');
+    
+    if (savedLanguage != null && _availableLanguages.contains(savedLanguage)) {
+      _currentLanguage = savedLanguage;
+    } else {
+      // Use system default or fallback to English
+      final systemLocale = Platform.localeName.split('_')[0];
+      if (_availableLanguages.contains(systemLocale)) {
+        _currentLanguage = systemLocale;
+      } else {
+        _currentLanguage = 'en';
+      }
+    }
+  }
+
+  Future<void> _loadStrings() async {
+    try {
+      final String jsonString = await rootBundle.loadString('lib/localizations/$_currentLanguage.json');
+      _strings = json.decode(jsonString);
+    } catch (e) {
+      // Fallback to English if the language file doesn't exist
+      if (_currentLanguage != 'en') {
+        try {
+          final String fallbackString = await rootBundle.loadString('lib/localizations/en.json');
+          _strings = json.decode(fallbackString);
+        } catch (e) {
+          debugPrint('Failed to load fallback language file: $e');
+          _strings = {};
+        }
+      } else {
+        debugPrint('Failed to load language file for $_currentLanguage: $e');
+        _strings = {};
+      }
+    }
+  }
+
+  Future<void> setLanguage(String? languageCode) async {
+    final prefs = await SharedPreferences.getInstance();
+    
+    if (languageCode == null) {
+      // System default
+      await prefs.remove('language_code');
+      final systemLocale = Platform.localeName.split('_')[0];
+      _currentLanguage = _availableLanguages.contains(systemLocale) ? systemLocale : 'en';
+    } else {
+      await prefs.setString('language_code', languageCode);
+      _currentLanguage = languageCode;
+    }
+    
+    await _loadStrings();
+    notifyListeners();
+  }
+
+  String t(String key) {
+    List<String> keys = key.split('.');
+    dynamic current = _strings;
+    
+    for (String k in keys) {
+      if (current is Map && current.containsKey(k)) {
+        current = current[k];
+      } else {
+        // Return the key as fallback for missing translations
+        return key;
+      }
+    }
+    
+    return current is String ? current : key;
+  }
+
+  // Get display name for a specific language code
+  Future<String> getLanguageDisplayName(String languageCode) async {
+    try {
+      final String jsonString = await rootBundle.loadString('lib/localizations/$languageCode.json');
+      final Map<String, dynamic> langData = json.decode(jsonString);
+      return langData['language']?['name'] ?? languageCode.toUpperCase();
+    } catch (e) {
+      return languageCode.toUpperCase(); // Fallback to language code
+    }
+  }
+
+  // Helper methods for common strings
+  String get appTitle => t('app.title');
+  String get settings => t('actions.settings');
+  String get tagNode => t('actions.tagNode');
+  String get download => t('actions.download');
+  String get edit => t('actions.edit');
+  String get cancel => t('actions.cancel');
+  String get ok => t('actions.ok');
+}