/**
* Execute the middleware.
*
* @param ExtendedRequest $request
* @param Response $response
* @param callable $next
*
* @return Response
*/
public function __invoke(ExtendedRequest $request, Response $response, callable $next)
{
$router = $this->router;
$route = $request->getCurrentRoute();
$locales = $this->locale;
$locale = $locales->getDefault();
$lang = $route->getArgument($router->getLanguageIdentifier());
$lang = ltrim($lang, '/');
$redirect = false;
if ($lang) {
try {
// Find language in list of available locales and set it as active
$locale = $locales->findByLanguage($lang);
$locales->setActive($locale);
if ($router->isOmitDefaultLanguage() && $locale == $locales->getDefault()) {
// Trigger redirect to correct path (as language set in path is default lang and we want to omit it)
$redirect = true;
}
} catch (Exception $e) {
// Trigger "notFound" as setActive() throws Exception if $locale is not valid / available
$next = $this->notFoundHandler;
}
} elseif (!$router->isOmitDefaultLanguage()) {
// Trigger redirect to correct path (as language is not set in path but we don't want to omit default lang)
$redirect = true;
}
// Redirect to route with proper language identifier value set (or omitted)
if ($redirect) {
$path = $router->pathFor($route->getName(), $route->getArguments(), $request->getParams(), $locale->getLanguage());
$uri = $request->getUri()->withPath($path);
return $response->withRedirect($uri);
}
return $next($request, $response);
}
/**
* {@inheritdoc}
*/
public function register(Container $container)
{
/**
* Add dependency (DI).
*
* @param Container $c
*
* @return ExtendedRequest
*/
$container['request'] = function ($c) {
return ExtendedRequest::createFromEnvironment($c['environment']);
};
}