cms/app/Http/Middleware/SetLocaleMiddleware.php

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<?php
namespace App\Http\Middleware;
use App\Services\TranslationManager;
use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Symfony\Component\HttpFoundation\Response;
class SetLocaleMiddleware
{
protected TranslationManager $translationManager;
public function __construct(TranslationManager $translationManager)
{
$this->translationManager = $translationManager;
}
/**
* Handle an incoming request.
*
* @param \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response) $next
*/
public function handle(Request $request, Closure $next): Response
{
$settingService = app(\App\Services\SettingService::class);
$locale = $this->determineLocale($request, $settingService);
app()->setLocale($locale);
$this->translationManager->setLocale($locale);
return $next($request);
}
protected function determineLocale(Request $request, \App\Services\SettingService $settingService): string
{
// 1. User Preference (Authenticated)
if (Auth::check() && Auth::user()->preferred_locale) {
return Auth::user()->preferred_locale;
}
// 2. URL Prefix (e.g., /en/about-us)
$segments = $request->segments();
$availableLocales = $settingService->getSupportedLocales();
// In test or some scenarios, segments might be different
if (count($segments) > 0 && in_array($segments[0], $availableLocales)) {
return $segments[0];
}
// Handle case where it might be in route parameters directly
$routeLocale = $request->route('locale');
if ($routeLocale && in_array($routeLocale, $availableLocales)) {
return $routeLocale;
}
// 3. Session
if (session()->has('locale')) {
return session()->get('locale');
}
// 4. Request Header
$acceptLanguage = $request->server('HTTP_ACCEPT_LANGUAGE');
if ($acceptLanguage) {
$headerLocale = substr($acceptLanguage, 0, 2);
if (in_array($headerLocale, $availableLocales)) {
return $headerLocale;
}
}
// 5. Global Default
return $settingService->get('default_locale', config('app.locale'));
}
}