From b30faf659c060eeb3f3dfc1e57b20c697e279bb9 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Rapha=C3=ABl=20Gertz?= <git@rapsys.eu>
Date: Thu, 12 Aug 2021 17:36:47 +0200
Subject: [PATCH] Switch on the fly locale with fb_locale=xx set

---
 EventSubscriber/FacebookSubscriber.php | 75 ++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 EventSubscriber/FacebookSubscriber.php

diff --git a/EventSubscriber/FacebookSubscriber.php b/EventSubscriber/FacebookSubscriber.php
new file mode 100644
index 0000000..d950a54
--- /dev/null
+++ b/EventSubscriber/FacebookSubscriber.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Rapsys\AirBundle\EventSubscriber;
+
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\ControllerEvent;
+use Symfony\Component\HttpKernel\Event\RequestEvent;
+use Symfony\Component\HttpKernel\Event\ResponseEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+use Symfony\Component\Routing\RouterInterface;
+
+class FacebookSubscriber implements EventSubscriberInterface {
+	///Supported locales array
+	private $locales;
+
+	///Router instance
+	private $router;
+
+	/*
+	 * Inject router interface and locales
+	 *
+	 * @param RouterInterface $router The router instance
+	 * @param array $locales The supported locales
+	 */
+	public function __construct(RouterInterface $router, array $locales) {
+		//Set locales
+		$this->locales = $locales;
+
+		//Set router
+		$this->router = $router;
+	}
+
+	/**
+	 * Change locale for request with ?fb_locale=xx
+	 *
+	 * @param RequestEvent The request event
+	 */
+	public function onKernelRequest(RequestEvent $event) {
+		//Retrieve request
+		$request = $event->getRequest();
+
+		//Check for facebook locale
+		if (
+			$request->query->has('fb_locale') &&
+			in_array($preferred = $request->query->get('fb_locale'), $this->locales)
+		) {
+			//Set locale
+			$request->setLocale($preferred);
+
+			//Set default locale
+			$request->setDefaultLocale($preferred);
+
+			//Get router context
+			$context = $this->router->getContext();
+
+			//Set context locale
+			$context->setParameter('_locale', $preferred);
+
+			//Set back router context
+			$this->router->setContext($context);
+		}
+	}
+
+	/**
+	 * Get subscribed events
+	 *
+	 * @return array The subscribed events
+	 */
+	public static function getSubscribedEvents() {
+		return [
+			// must be registered before the default locale listener
+			KernelEvents::REQUEST => [['onKernelRequest', 10]]
+		];
+	}
+}
-- 
2.41.1