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1<?php
2
3declare(strict_types=1);
4
5namespace App\Web\Controller;
6
7use App\Domain\Translation\Service\TranslatorInterface;
8use App\Domain\Translation\ValueObject\Language;
9use App\Web\Middleware\LocaleMiddleware;
10use Psr\Http\Message\ResponseFactoryInterface;
11use Psr\Http\Message\ResponseInterface;
12use Psr\Http\Message\ServerRequestInterface;
13
14 class LanguageController
15{
16    public function __construct(
17        private TranslatorInterface $translator,
18        private ResponseFactoryInterface $responseFactory
19    ) {}
20
21    public function switch(ServerRequestInterface $request): ResponseInterface
22    {
23        $queryParams = $request->getQueryParams();
24        $langCode = isset($queryParams['lang']) && is_string($queryParams['lang']) ? $queryParams['lang'] : Language::DEFAULT_LOCALE;
25
26        $language = new Language($langCode);
27        $this->translator->setLocale($language->getCode());
28
29        $referer = $request->getHeaderLine('Referer');
30        $redirectUrl = $referer !== '' ? $referer : '/dashboard';
31
32        $response = $this->responseFactory->createResponse(302)
33            ->withHeader('Location', $redirectUrl);
34
35        // Cookie path=/; max-age=1 year
36        $cookieHeader = sprintf(
37            '%s=%s; Path=/; Max-Age=31536000; SameSite=Lax',
38            LocaleMiddleware::COOKIE_NAME,
39            $language->getCode()
40        );
41
42        return $response->withHeader('Set-Cookie', $cookieHeader);
43    }
44}