Add locale middleware

src/Lodash/Middlewares/ApiLocale.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Longman\LaravelLodash\Middlewares;
+
+use Closure;
+use Illuminate\Http\Request;
+
+use function app;
+use function array_keys;
+use function config;
+use function setlocale;
+
+use const LC_ALL;
+
+class ApiLocale
+{
+    public function handle(Request $request, Closure $next)
+    {
+        if ($request->wantsJson()) {
+            $locales = config('lodash.locales', []);
+            $locale = $request->getPreferredLanguage(array_keys($locales));
+            app()->setLocale($locale);
+        }
+
+        /** @var \Symfony\Component\HttpFoundation\Response $response */
+        $response = $next($request);
+        $locale = app()->getLocale();
+        $response->headers->set('Content-Language', $locale, true);
+
+        if (! empty($locales[$locale])) {
+            setlocale(LC_ALL, $locales[$locale]['full_locale']);
+        }
+
+        return $response;
+    }
+}

src/config/config.php

@@ -3,6 +3,25 @@
 declare(strict_types=1);
 
 return [
+    'locales' => [
+        'en' => [
+            'name'             => 'English',
+            'native_name'      => 'English',
+            'flag'             => 'gb',
+            'locale'           => 'en',
+            'canonical_locale' => 'en_GB',
+            'full_locale'      => 'en_GB.UTF-8',
+        ],
+        'ka' => [
+            'name'             => 'Georgian',
+            'native_name'      => 'ქართული',
+            'flag'             => 'ge',
+            'locale'           => 'ka',
+            'canonical_locale' => 'ka_GE',
+            'full_locale'      => 'ka_GE.UTF-8',
+        ],
+    ],
+
     'debug' => [
         'ips' => explode(',', env('DEBUG_IP_LIST', '')), // IP list for enabling debug mode
     ],