finished laravel migration

app/Http/Controllers/I18nController.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\JsonResponse;
+use Illuminate\Support\Facades\File;
+
+class I18nController extends Controller
+{
+    public function __invoke(string $locale): JsonResponse
+    {
+        $path = resource_path("lang/{$locale}.json");
+
+        if (!File::exists($path)) {
+            return response()->json([], 404);
+        }
+
+        $contents = File::get($path);
+
+        return response()->json(json_decode($contents, true, 512, JSON_THROW_ON_ERROR));
+    }
+}