TF-297 Store language selected when user changed

lib/features/manage_account/data/datasource/manage_account_datasource.dart

@@ -1,3 +1,5 @@
+import 'dart:ui';
+
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/properties/properties.dart';
 import 'package:jmap_dart_client/jmap/identities/identity.dart';
@@ -13,4 +15,6 @@ abstract class ManageAccountDataSource {
   Future<bool> deleteIdentity(AccountId accountId, IdentityId identityId);
 
   Future<bool> editIdentity(AccountId accountId, EditIdentityRequest editIdentityRequest);
+
+  Future<void> persistLanguage(Locale localeCurrent);
 }

lib/features/manage_account/data/datasource_impl/manage_account_datasource_impl.dart

@@ -1,7 +1,10 @@
+import 'dart:ui';
+
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/properties/properties.dart';
 import 'package:jmap_dart_client/jmap/identities/identity.dart';
 import 'package:tmail_ui_user/features/manage_account/data/datasource/manage_account_datasource.dart';
+import 'package:tmail_ui_user/features/manage_account/data/local/language_cache_manager.dart';
 import 'package:tmail_ui_user/features/manage_account/data/network/manage_account_api.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/model/create_new_identity_request.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/model/edit_identity_request.dart';
@@ -10,8 +13,9 @@ import 'package:tmail_ui_user/features/manage_account/domain/model/identities_re
 class ManageAccountDataSourceImpl extends ManageAccountDataSource {
 
   final ManageAccountAPI manageAccountAPI;
+  final LanguageCacheManager _languageCacheManager;
 
-  ManageAccountDataSourceImpl(this.manageAccountAPI);
+  ManageAccountDataSourceImpl(this.manageAccountAPI, this._languageCacheManager);
 
   @override
   Future<IdentitiesResponse> getAllIdentities(AccountId accountId, {Properties? properties}) {
@@ -48,4 +52,13 @@ class ManageAccountDataSourceImpl extends ManageAccountDataSource {
       throw error;
     });
   }
+
+  @override
+  Future<void> persistLanguage(Locale localeCurrent) {
+    return Future.sync(() async {
+      return await _languageCacheManager.persistLanguage(localeCurrent);
+    }).catchError((error) {
+      throw error;
+    });
+  }
 }

lib/features/manage_account/data/local/language_cache_manager.dart

@@ -0,0 +1,20 @@
+
+import 'dart:ui';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+class LanguageCacheManager {
+  static const keyLanguageCode = 'LANGUAGE_CODE';
+  static const keyCountryCode = 'COUNTRY_CODE';
+
+  final SharedPreferences _sharedPreferences;
+
+  LanguageCacheManager(this._sharedPreferences);
+
+  Future<void> persistLanguage(Locale localeCurrent) async {
+    await Future.wait([
+      _sharedPreferences.setString(keyLanguageCode, localeCurrent.languageCode),
+      _sharedPreferences.setString(keyCountryCode, localeCurrent.countryCode ?? '')
+    ]);
+  }
+}

lib/features/manage_account/data/repository/manage_account_repository_impl.dart

@@ -1,3 +1,5 @@
+import 'dart:ui';
+
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/properties/properties.dart';
 import 'package:jmap_dart_client/jmap/identities/identity.dart';
@@ -32,4 +34,9 @@ class ManageAccountRepositoryImpl extends ManageAccountRepository {
   Future<bool> editIdentity(AccountId accountId, EditIdentityRequest editIdentityRequest) {
     return dataSource.editIdentity(accountId, editIdentityRequest);
   }
+
+  @override
+  Future<void> persistLanguage(Locale localeCurrent) {
+    return dataSource.persistLanguage(localeCurrent);
+  }
 }