Complete refactoring SFM App Source Code

lib/product/services/language_services.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+import '../cache/local_manager.dart';
+import '../constant/enums/local_keys_enums.dart';
+import '../constant/lang/language_constants.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+
+class LanguageServices {
+  Future<Locale> setLocale(String languageCode) async {
+    await LocaleManager.prefrencesInit();
+    LocaleManager.instance
+        .setStringValue(PreferencesKeys.LANGUAGE_CODE, languageCode);
+    return _locale(languageCode);
+  }
+
+  Future<Locale> getLocale() async {
+    await LocaleManager.prefrencesInit();
+    String languageCode =
+        LocaleManager.instance.getStringValue(PreferencesKeys.LANGUAGE_CODE);
+    return _locale(languageCode);
+  }
+
+  Locale _locale(String languageCode) {
+    switch (languageCode) {
+      case LanguageConstants.ENGLISH:
+        return const Locale(LanguageConstants.ENGLISH, '');
+      case LanguageConstants.VIETNAM:
+        return const Locale(LanguageConstants.VIETNAM, '');
+      default:
+        return const Locale(LanguageConstants.VIETNAM, '');
+    }
+  }
+}
+
+AppLocalizations appLocalization(BuildContext context) {
+  return AppLocalizations.of(context)!;
+}