controller refactoring part 4

src/Domain/Localization/Controllers/CurrentLocalizationController.php

@@ -0,0 +1,36 @@
+<?php
+
+
+namespace Domain\Localization\Controllers;
+
+
+use Domain\Localization\Models\Language;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
+use Illuminate\Database\QueryException;
+use Illuminate\Support\Collection;
+
+class CurrentLocalizationController
+{
+    /**
+     * Get language translations for frontend app
+     */
+    public function __invoke(
+        string $lang
+    ): Collection {
+
+        $translations = cache()
+            ->rememberForever("language-translations-$lang", function () use ($lang) {
+                try {
+                    return Language::whereLocale($lang)
+                        ->firstOrFail()
+                        ->languageTranslations;
+                } catch (QueryException | ModelNotFoundException $e) {
+                    return null;
+                }
+            });
+
+        return $translations
+            ? map_language_translations($translations)
+            : get_default_language_translations();
+    }
+}