lib/logic/api_maps/graphql_maps/graphql_api_map.dart

@@ -71,15 +71,14 @@ abstract class GraphQLApiMap {
       'https://api.$rootAddress/graphql',
       httpClient: ioClient,
       parser: ResponseLoggingParser(),
+      defaultHeaders: {'Accept-Language': _locale},
     );
 
-    final String token = _getApiToken();
-
     final Link graphQLLink = RequestLoggingLink().concat(
       isWithToken
           ? AuthLink(
               getToken: () async =>
-                  customToken == '' ? 'Bearer $token' : customToken,
+                  customToken == '' ? 'Bearer $_token' : customToken,
             ).concat(httpLink)
           : httpLink,
     );
@@ -95,13 +94,16 @@ abstract class GraphQLApiMap {
   }
 
   Future<GraphQLClient> getSubscriptionClient() async {
-    final String token = _getApiToken();
-
     final WebSocketLink webSocketLink = WebSocketLink(
       'ws://api.$rootAddress/graphql',
       config: SocketClientConfig(
         autoReconnect: true,
-        headers: token.isEmpty ? null : {'Authorization': 'Bearer $token'},
+        headers: _token.isEmpty
+            ? null
+            : {
+                'Authorization': 'Bearer $_token',
+                'Accept-Language': _locale,
+              },
       ),
     );
 
@@ -111,7 +113,9 @@ abstract class GraphQLApiMap {
     );
   }
 
-  String _getApiToken() {
+  String get _locale => getIt.get<ApiConfigModel>().localeCode ?? 'en';
+
+  String get _token {
     String token = '';
     final serverDetails = getIt<ApiConfigModel>().serverDetails;
     if (serverDetails != null) {

lib/logic/get_it/api_config.dart

@@ -9,6 +9,7 @@ class ApiConfigModel {
   final Box _box = Hive.box(BNames.serverInstallationBox);
 
   ServerHostingDetails? get serverDetails => _serverDetails;
+  String? get localeCode => _localeCode;
   String? get serverProviderKey => _serverProviderKey;
   String? get serverLocation => _serverLocation;
   String? get serverType => _serverType;
@@ -20,6 +21,7 @@ class ApiConfigModel {
   ServerDomain? get serverDomain => _serverDomain;
   BackblazeBucket? get backblazeBucket => _backblazeBucket;
 
+  String? _localeCode;
   String? _serverProviderKey;
   String? _serverLocation;
   String? _dnsProviderKey;
@@ -31,6 +33,10 @@ class ApiConfigModel {
   ServerDomain? _serverDomain;
   BackblazeBucket? _backblazeBucket;
 
+  Future<void> setLocaleCode(final String value) async {
+    _localeCode = value;
+  }
+
   Future<void> storeServerProviderType(final ServerProviderType value) async {
     await _box.put(BNames.serverProvider, value);
     _serverProvider = value;
@@ -82,6 +88,7 @@ class ApiConfigModel {
   }
 
   void clear() {
+    _localeCode = null;
     _serverProviderKey = null;
     _dnsProvider = null;
     _serverLocation = null;
@@ -95,6 +102,7 @@ class ApiConfigModel {
   }
 
   void init() {
+    _localeCode = 'en';
     _serverProviderKey = _box.get(BNames.hetznerKey);
     _serverLocation = _box.get(BNames.serverLocation);
     _dnsProviderKey = _box.get(BNames.cloudFlareKey);

lib/main.dart

@@ -71,8 +71,11 @@ class SelfprivacyApp extends StatelessWidget {
             builder: (
               final BuildContext context,
               final AppSettingsState appSettings,
-            ) =>
+            ) {
-                MaterialApp.router(
+              getIt.get<ApiConfigModel>().setLocaleCode(
+                    context.locale.languageCode,
+                  );
+              return MaterialApp.router(
                 routeInformationParser: _appRouter.defaultRouteParser(),
                 routerDelegate: _appRouter.delegate(),
                 scaffoldMessengerKey:
@@ -98,7 +101,8 @@ class SelfprivacyApp extends StatelessWidget {
                       (final FlutterErrorDetails errorDetails) => error;
                   return widget!;
                 },
-            ),
+              );
+            },
           ),
         ),
       );