102 lines
3.2 KiB
PHP
102 lines
3.2 KiB
PHP
<?php
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/*
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* This file is part of the Kimai time-tracking app.
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace App\EventSubscriber;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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use Symfony\Component\HttpFoundation\RedirectResponse;
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use Symfony\Component\HttpKernel\Event\RequestEvent;
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use Symfony\Component\HttpKernel\KernelEvents;
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use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
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/**
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* When visiting the homepage, this listener redirects the user to the most
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* appropriate localized version according to the browser settings.
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*
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* See http://symfony.com/doc/current/components/http_kernel/introduction.html#the-kernel-request-event
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*
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* @author Oleg Voronkovich <oleg-voronkovich@yandex.ru>
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*/
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class RedirectToLocaleSubscriber implements EventSubscriberInterface
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{
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/**
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* @var UrlGeneratorInterface
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*/
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private $urlGenerator;
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/**
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* List of supported locales.
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*
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* @var string[]
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*/
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private $locales = [];
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/**
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* @var string
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*/
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private $defaultLocale = '';
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/**
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* Constructor.
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*
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* @param UrlGeneratorInterface $urlGenerator
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* @param string $locales Supported locales separated by '|'
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* @param string|null $defaultLocale
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*/
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public function __construct(UrlGeneratorInterface $urlGenerator, $locales, $defaultLocale = null)
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{
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$this->urlGenerator = $urlGenerator;
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$this->locales = explode('|', trim($locales));
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if (empty($this->locales)) {
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throw new \UnexpectedValueException('The list of supported locales must not be empty.');
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}
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$this->defaultLocale = $defaultLocale ?: $this->locales[0];
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if (!in_array($this->defaultLocale, $this->locales)) {
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throw new \UnexpectedValueException(
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sprintf('The default locale ("%s") must be one of "%s".', $this->defaultLocale, $locales)
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);
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}
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// Add the default locale at the first position of the array,
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// because Symfony\HttpFoundation\Request::getPreferredLanguage
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// returns the first element when no an appropriate language is found
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array_unshift($this->locales, $this->defaultLocale);
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$this->locales = array_unique($this->locales);
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}
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public static function getSubscribedEvents(): array
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{
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return [
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KernelEvents::REQUEST => ['onKernelRequest']
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];
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}
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public function onKernelRequest(RequestEvent $event)
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{
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$request = $event->getRequest();
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// Ignore sub-requests and all URLs but the homepage
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if ('/' !== $request->getPathInfo()) {
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return;
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}
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// Ignore requests from referrers with the same HTTP host in order to prevent
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// changing language for users who possibly already selected it for this application.
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if (0 === stripos($request->headers->get('referer'), $request->getSchemeAndHttpHost())) {
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return;
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}
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$preferredLanguage = $request->getPreferredLanguage($this->locales);
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$response = new RedirectResponse($this->urlGenerator->generate('homepage', ['_locale' => $preferredLanguage]));
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$event->setResponse($response);
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}
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}
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