Fix string not translatable

app/lib/l10n/app_en.arb

@@ -301,6 +301,10 @@
 	"@settingsLanguageTitle": {
 		"description": "Set display language"
 	},
+	"settingsLanguageOptionSystemDefaultLabel": "System default",
+	"@settingsLanguageOptionSystemDefaultLabel": {
+		"description": "Follow the Android system language"
+	},
 	"settingsExifSupportTitle": "EXIF support",
 	"@settingsExifSupportTitle": {
 		"description": "Title of the EXIF support setting"

app/lib/l10n/untranslated-messages.txt

@@ -1,5 +1,6 @@
 {
   "cs": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsMemoriesTitle",
@@ -145,6 +146,7 @@
   ],
 
   "de": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsMemoriesTitle",
@@ -304,6 +306,7 @@
   ],
 
   "el": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",
@@ -343,6 +346,7 @@
   ],
 
   "es": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "rootPickerSkipConfirmationDialogContent2",
     "categoriesLabel",
     "searchLandingPeopleListEmptyText",
@@ -364,6 +368,7 @@
   ],
 
   "fi": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "categoriesLabel",
     "searchLandingPeopleListEmptyText",
     "searchLandingCategoryVideosLabel",
@@ -385,6 +390,7 @@
 
   "fr": [
     "collectionsTooltip",
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",
@@ -448,6 +454,7 @@
   ],
 
   "pl": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",
@@ -529,6 +536,7 @@
   ],
 
   "pt": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",
@@ -589,6 +597,7 @@
   ],
 
   "ru": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",
@@ -649,6 +658,7 @@
   ],
 
   "zh": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",
@@ -709,6 +719,7 @@
   ],
 
   "zh_Hant": [
+    "settingsLanguageOptionSystemDefaultLabel",
     "settingsExifWifiOnlyTitle",
     "settingsExifWifiOnlyFalseSubtitle",
     "settingsAccountLabelTitle",

app/lib/language_util.dart

@@ -1,17 +1,38 @@
 import 'package:flutter/widgets.dart';
+import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/pref.dart';
 
 class AppLanguage {
-  const AppLanguage(this.langId, this.nativeName, this.isoName, this.locale);
+  const AppLanguage(this.langId, this._nativeName, this.isoName, this.locale);
+
+  String get nativeName {
+    if (langId == _AppLanguageEnum.systemDefault.index) {
+      try {
+        return L10n.global().settingsLanguageOptionSystemDefaultLabel;
+      } catch (_) {
+        return _nativeName;
+      }
+    } else {
+      return _nativeName;
+    }
+  }
 
   final int langId;
-  final String nativeName;
+  final String _nativeName;
   final String? isoName;
   final Locale? locale;
 }
 
-String getSelectedLanguageName() => _getSelectedLanguage().nativeName;
-Locale? getSelectedLocale() => _getSelectedLanguage().locale;
+AppLanguage getSelectedLanguage() {
+  try {
+    final lang = Pref().getLanguageOr(0);
+    return supportedLanguages[lang]!;
+  } catch (_) {
+    return supportedLanguages[_AppLanguageEnum.systemDefault.index]!;
+  }
+}
+
+Locale? getSelectedLocale() => getSelectedLanguage().locale;
 
 final supportedLanguages = {
   _AppLanguageEnum.systemDefault.index: AppLanguage(
@@ -68,12 +89,3 @@ enum _AppLanguageEnum {
   chineseHans,
   chineseHant,
 }
-
-AppLanguage _getSelectedLanguage() {
-  try {
-    final lang = Pref().getLanguageOr(0);
-    return supportedLanguages[lang]!;
-  } catch (_) {
-    return supportedLanguages[_AppLanguageEnum.systemDefault.index]!;
-  }
-}

app/lib/widget/settings.dart

@@ -108,7 +108,7 @@ class _SettingsState extends State<Settings> {
             [
               ListTile(
                 title: Text(L10n.global().settingsLanguageTitle),
-                subtitle: Text(language_util.getSelectedLanguageName()),
+                subtitle: Text(language_util.getSelectedLanguage().nativeName),
                 onTap: () => _onLanguageTap(context),
               ),
               SwitchListTile(