Feat: Add Launcher Localization support (i18n) & Russian language

Launcher/l10n.yaml

@@ -0,0 +1,5 @@
+arb-dir: lib/l10n
+template-arb-file: app_en.arb
+output-localization-file: app_localizations.dart
+output-class: AppLocalizations
+output-dir: lib/gen/l10n

Launcher/lib/core/routing/app_router.dart

@@ -31,6 +31,8 @@ import 'package:kyber_launcher/features/social/screens/social_home.dart';
 import 'package:kyber_launcher/features/stats/providers/stats_cubit.dart';
 import 'package:kyber_launcher/features/stats/screens/personal/stats_overview.dart';
 import 'package:kyber_launcher/features/stats/screens/stats.dart';
+import 'package:kyber_launcher/gen/fonts.gen.dart';
+import 'package:kyber_launcher/gen/l10n/app_localizations.dart';
 import 'package:kyber_launcher/injection_container.dart';
 import 'package:kyber_launcher/main.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
@@ -189,22 +191,33 @@ final router = GoRouter(
   initialLocation: '/home',
   observers: [SentryNavigatorObserver()],
   errorBuilder: (context, state) {
+    final l10n = AppLocalizations.of(context)!;
+    final isEn = Localizations.localeOf(context).languageCode == 'en';
+    final currentFont = isEn ? FontFamily.battlefrontUI : 'BattlefrontGlobal';
+
     return SafeArea(
       child: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
-            const Text(
-              'Page Not Found',
-              style: TextStyle(fontWeight: FontWeight.bold),
+            Text(
+              l10n.pageNotFoundTitle,
+              style: TextStyle(
+                fontFamily: currentFont,
+                fontWeight: FontWeight.bold,
+              ),
             ),
             const SizedBox(height: 16),
-            Text(state.error?.toString() ?? 'page not found'),
+            Text(
+              state.error?.toString() ?? l10n.pageNotFoundFallback,
+              style: TextStyle(fontFamily: currentFont),
+            ),
             const SizedBox(height: 16),
             Button(
               onPressed: () => context.go('/'),
-              child: const Text(
-                'Go to home page',
+              child: Text(
+                l10n.goToHomePage,
+                style: TextStyle(fontFamily: currentFont),
               ),
             ),
           ],
@@ -370,7 +383,8 @@ final router = GoRouter(
             //TODO: check for unsaved changes
             return true;
           },
-          pageBuilder: (_, state) {
+          pageBuilder: (context, state) {
+            final l10n = AppLocalizations.of(context)!;
             return buildCustomPage(
               state: state,
               child: MultiBlocProvider(
@@ -393,7 +407,7 @@ final router = GoRouter(
                         if (collectionQuery == 'new') {
                           collection = ModCollectionMetaData(
                             localId: const Uuid().v4(),
-                            title: 'New Collection',
+                            title: l10n.newCollectionTitle,
                             mods: [],
                           );
                         } else {
@@ -522,4 +536,4 @@ final router = GoRouter(
       ],
     ),
   ],
-);
+);

Launcher/lib/features/download_manager/screens/download_manager.dart

@@ -12,6 +12,7 @@ import 'package:kyber_launcher/features/nexusmods/services/nexusmods_service.dar
 import 'package:kyber_launcher/features/settings/dialogs/chromium_download_dialog.dart';
 import 'package:kyber_launcher/gen/assets.gen.dart';
 import 'package:kyber_launcher/gen/fonts.gen.dart';
+import 'package:kyber_launcher/gen/l10n/app_localizations.dart';
 import 'package:kyber_launcher/injection_container.dart';
 import 'package:kyber_launcher/shared/ui/buttons/custom_icon_button.dart';
 import 'package:kyber_launcher/shared/ui/cards/kyber_container.dart';
@@ -120,16 +121,20 @@ class _DownloadManagerHeader extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context)!;
+    final isEn = Localizations.localeOf(context).languageCode == 'en';
+    final currentFont = isEn ? FontFamily.battlefrontUI : 'BattlefrontGlobal';
+
     return Padding(
       padding: const EdgeInsets.all(15),
       child: Row(
         children: [
-          const Expanded(
+          Expanded(
             child: Column(
               crossAxisAlignment: .start,
               children: [
-                Text(
-                  'DOWNLOAD MANAGER',
+                const Text(
+                  'DOWNLOAD MANAGER', 
                   style: TextStyle(
                     fontFamily: FontFamily.aurebesh,
                     fontSize: 14,
@@ -138,9 +143,9 @@ class _DownloadManagerHeader extends StatelessWidget {
                   ),
                 ),
                 Text(
-                  'DOWNLOAD MANAGER',
+                  l10n.downloadManager.toUpperCase(),
                   style: TextStyle(
-                    fontFamily: FontFamily.battlefrontUI,
+                    fontFamily: currentFont, 
                     fontSize: 24,
                     height: 1,
                   ),
@@ -196,15 +201,19 @@ class _PausedDownloadsSection extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context)!;
+    final isEn = Localizations.localeOf(context).languageCode == 'en';
+    final currentFont = isEn ? FontFamily.battlefrontUI : 'BattlefrontGlobal';
+
     return Column(
       crossAxisAlignment: .start,
       children: [
-        const Padding(
-          padding: .symmetric(horizontal: 15, vertical: 10),
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 15, vertical: 10),
           child: Text(
-            'PAUSED DOWNLOADS',
+            l10n.pausedDownloads.toUpperCase(),
             style: TextStyle(
-              fontFamily: FontFamily.battlefrontUI,
+              fontFamily: currentFont,
               fontSize: 20,
               color: kWhiteColor,
             ),
@@ -251,7 +260,7 @@ class _DownloadTaskItem extends StatelessWidget {
             children: [
               _buildLeadingIcon(),
               const VCardSection(),
-              Expanded(child: _buildTaskInfo()),
+              Expanded(child: _buildTaskInfo(context)),
               if (task.status.isNotFinalState) ...[
                 const VCardSection(),
                 _buildCancelButton(),
@@ -301,7 +310,10 @@ class _DownloadTaskItem extends StatelessWidget {
     );
   }
 
-  Widget _buildTaskInfo() {
+  Widget _buildTaskInfo(BuildContext context) {
+    final isEn = Localizations.localeOf(context).languageCode == 'en';
+    final currentFont = isEn ? FontFamily.battlefrontUI : 'BattlefrontGlobal';
+
     return Stack(
       children: [
         Positioned.fill(
@@ -312,8 +324,8 @@ class _DownloadTaskItem extends StatelessWidget {
               children: [
                 Text(
                   task.task.displayName,
-                  style: const TextStyle(
-                    fontFamily: FontFamily.battlefrontUI,
+                  style: TextStyle(
+                    fontFamily: currentFont,
                     fontSize: 18,
                     height: 1,
                     color: kWhiteColor,
@@ -426,25 +438,29 @@ class _NexusPremiumBanner extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context)!;
+    final isEn = Localizations.localeOf(context).languageCode == 'en';
+    final currentFont = isEn ? FontFamily.battlefrontUI : 'BattlefrontGlobal';
+
     return Center(
       child: Container(
         padding: const EdgeInsets.all(15),
         child: RichText(
           text: TextSpan(
             children: [
-              const TextSpan(
-                text: 'UN-CAP DOWNLOAD SPEEDS WITH ',
+              TextSpan(
+                text: l10n.unCapSpeedPrefix,
                 style: TextStyle(
                   color: kGrayColor,
-                  fontFamily: FontFamily.battlefrontUI,
+                  fontFamily: currentFont,
                   fontSize: 16,
                 ),
               ),
               TextSpan(
-                text: 'NEXUS MODS PREMIUM',
+                text: l10n.nexusModsPremium,
                 style: TextStyle(
                   color: kActiveColor,
-                  fontFamily: FontFamily.battlefrontUI,
+                  fontFamily: currentFont,
                   fontSize: 16,
                 ),
                 recognizer: TapGestureRecognizer()
@@ -629,4 +645,4 @@ class _DownloadProgressIndicator extends StatelessWidget {
       ),
     );
   }
-}
+}