- added function to upgrade language translations

- maintenance gate

app/Http/Controllers/App/Maintenance.php

@@ -3,17 +3,34 @@
 namespace App\Http\Controllers\App;
 
 use App\Http\Controllers\Controller;
+use App\Models\Language;
+use App\Models\LanguageTranslation;
+use App\Services\LanguageService;
 use Artisan;
+use DB;
+use Gate;
+use Illuminate\Contracts\Foundation\Application;
+use Illuminate\Contracts\Routing\ResponseFactory;
 use Illuminate\Http\Request;
+use Illuminate\Http\Response;
 use Schema;
 
 class Maintenance extends Controller
 {
+    /**
+     * @throws \Illuminate\Auth\Access\AuthorizationException
+     */
+    public function __construct()
+    {
+        // Check admin permission
+        Gate::authorize('maintenance');
+    }
 
     /**
      *  Start maintenance mode
      */
-    public function up() {
+    public function up()
+    {
         $command = Artisan::call('up');
 
         if ($command === 0) {
@@ -24,7 +41,8 @@ class Maintenance extends Controller
     /**
      *  End maintenance mode
      */
-    public function down() {
+    public function down()
+    {
         $command = Artisan::call('down');
 
         if ($command === 0) {
@@ -33,17 +51,23 @@ class Maintenance extends Controller
     }
 
     /**
-     *  Upgrade database
+     * Get new language translations from default translations
+     * and insert it into database
+     *
+     * @return Application|ResponseFactory|Response
      */
-    public function upgrade()
+    public function upgrade_translations()
     {
-        $this->upgrade_database();
+        resolve(LanguageService::class)
+            ->upgrade_language_translations();
+
+        return response('Done.', 201);
     }
 
     /**
      * @return int|mixed
      */
-    private function upgrade_database()
+    public function upgrade_database()
     {
         $command = Artisan::call('migrate', [
             '--force' => true