public function execute(Request $request, \Concrete\Core\Routing\Route $route = null, $parameters = array())
 {
     // figure out where we need to go
     $c = Page::getFromRequest($request);
     if ($c->isError() && $c->getError() == COLLECTION_NOT_FOUND) {
         // if we don't have a path and we're doing cID, then this automatically fires a 404.
         if (!$request->getPath() && $request->get('cID')) {
             return $this->sendPageNotFound($request);
         }
         // let's test to see if this is, in fact, the home page,
         // and we're routing arguments onto it (which is screwing up the path.)
         $home = Page::getByID(HOME_CID);
         $request->setCurrentPage($home);
         $homeController = $home->getPageController();
         $homeController->setupRequestActionAndParameters($request);
         if (!$homeController->validateRequest()) {
             return $this->sendPageNotFound($request);
         } else {
             $c = $home;
             $c->cPathFetchIsCanonical = true;
         }
     }
     if (!$c->cPathFetchIsCanonical) {
         // Handle redirect URL (additional page paths)
         /** @var Url $url */
         $url = \Core::make('url/manager')->resolve(array($c));
         $query = $url->getQuery();
         $query->modify($request->getQueryString());
         $url = $url->setQuery($query);
         $response = Redirect::to($url);
         $response->setStatusCode(301);
         return $response;
     }
     // maintenance mode
     if ($c->getCollectionPath() != '/login') {
         $smm = Config::get('concrete.maintenance_mode');
         if ($smm == 1 && !PermissionKey::getByHandle('view_in_maintenance_mode')->validate() && ($_SERVER['REQUEST_METHOD'] != 'POST' || Loader::helper('validation/token')->validate() == false)) {
             $v = new View('/frontend/maintenance_mode');
             $v->setViewTheme(VIEW_CORE_THEME);
             return $this->sendResponse($v);
         }
     }
     if ($c->getCollectionPointerExternalLink() != '') {
         return Redirect::url($c->getCollectionPointerExternalLink(), 301);
     }
     $cp = new Permissions($c);
     if ($cp->isError() && $cp->getError() == COLLECTION_FORBIDDEN) {
         return $this->sendPageForbidden($request, $c);
     }
     if (!$c->isActive() && !$cp->canViewPageVersions()) {
         return $this->sendPageNotFound($request);
     }
     if ($cp->canEditPageContents() || $cp->canEditPageProperties() || $cp->canViewPageVersions()) {
         $c->loadVersionObject('RECENT');
     }
     $vp = new Permissions($c->getVersionObject());
     // returns the $vp object, which we then check
     if (is_object($vp) && $vp->isError()) {
         switch ($vp->getError()) {
             case COLLECTION_NOT_FOUND:
                 return $this->sendPageNotFound($request);
                 break;
             case COLLECTION_FORBIDDEN:
                 return $this->sendPageForbidden($request, $c);
                 break;
         }
     }
     // Now that we've passed all permissions checks, and we have a page, we check to see if we
     // ought to redirect based on base url or trailing slash settings
     $cms = \Core::make("app");
     $response = $cms->handleCanonicalURLRedirection($request);
     if (!$response) {
         $response = $cms->handleURLSlashes($request);
     }
     if (isset($response)) {
         $response->send();
         exit;
     }
     // Now we check to see if we're on the home page, and if it multilingual is enabled,
     // and if so, whether we should redirect to the default language page.
     if (\Core::make('multilingual/detector')->isEnabled()) {
         $dl = Core::make('multilingual/detector');
         if ($c->getCollectionID() == HOME_CID && Config::get('concrete.multilingual.redirect_home_to_default_locale')) {
             // Let's retrieve the default language
             $ms = $dl->getPreferredSection();
             if (is_object($ms) && $ms->getCollectionID() != HOME_CID) {
                 Redirect::page($ms)->send();
                 exit;
             }
         }
         $dl->setupSiteInterfaceLocalization($c);
     }
     $request->setCurrentPage($c);
     require DIR_BASE_CORE . '/bootstrap/process.php';
     $u = new User();
     // On page view event.
     $pe = new PageEvent($c);
     $pe->setUser($u);
     $pe->setRequest($request);
     Events::dispatch('on_page_view', $pe);
     $controller = $c->getPageController();
     $controller->on_start();
     $controller->setupRequestActionAndParameters($request);
     $response = $controller->validateRequest();
     if ($response instanceof \Symfony\Component\HttpFoundation\Response) {
         return $response;
     } else {
         if ($response == false) {
             return $this->sendPageNotFound($request);
         }
     }
     $requestTask = $controller->getRequestAction();
     $requestParameters = $controller->getRequestActionParameters();
     $response = $controller->runAction($requestTask, $requestParameters);
     if ($response instanceof \Symfony\Component\HttpFoundation\Response) {
         return $response;
     }
     $c->setController($controller);
     $view = $controller->getViewObject();
     // Mobile theme
     if (Config::get('concrete.misc.mobile_theme_id') > 0) {
         $md = new \Mobile_Detect();
         if ($md->isMobile()) {
             $mobileTheme = Theme::getByID(Config::get('concrete.misc.mobile_theme_id'));
             if ($mobileTheme instanceof Theme) {
                 $view->setViewTheme($mobileTheme);
                 $controller->setTheme($mobileTheme);
             }
         }
     }
     // we update the current page with the one bound to this controller.
     $request->setCurrentPage($c);
     return $this->sendResponse($view);
 }
 /**
  * @inheritdoc
  */
 public function collection(Collection $collection, $code = Response::HTTP_OK, $headers = array())
 {
     if (!$this->app) {
         throw new \RuntimeException('Cannot resolve collections without a reference to the application');
     }
     $request = $this->request;
     if ($collection->isError() && $collection->getError() == COLLECTION_NOT_FOUND) {
         if ($response = $this->collectionNotFound($collection, $request, $headers)) {
             return $response;
         }
     }
     if ($collection->getCollectionPath() != '/page_not_found') {
         if (!isset($collection->cPathFetchIsCanonical) || !$collection->cPathFetchIsCanonical) {
             // Handle redirect URL (additional page paths)
             /** @var Url $url */
             $url = $this->app->make('url/manager')->resolve([$collection]);
             $query = $url->getQuery();
             $query->modify($request->getQueryString());
             $url = $url->setQuery($query);
             return $this->redirect($url, Response::HTTP_MOVED_PERMANENTLY, $headers);
         }
     }
     // maintenance mode
     if ($collection->getCollectionPath() != '/login') {
         $smm = $this->config->get('concrete.maintenance_mode');
         if ($smm == 1 && !Key::getByHandle('view_in_maintenance_mode')->validate() && ($_SERVER['REQUEST_METHOD'] != 'POST' || Loader::helper('validation/token')->validate() == false)) {
             $v = new View('/frontend/maintenance_mode');
             $router = $this->app->make(RouterInterface::class);
             $tmpTheme = $router->getThemeByRoute('/frontend/maintenance_mode');
             $v->setViewTheme($tmpTheme[0]);
             $v->addScopeItems(['c' => $collection]);
             $request->setCurrentPage($collection);
             if (isset($tmpTheme[1])) {
                 $v->setViewTemplate($tmpTheme[1]);
             }
             return $this->view($v, $code, $headers);
         }
     }
     if ($collection->getCollectionPointerExternalLink() != '') {
         return $this->redirect($collection->getCollectionPointerExternalLink());
     }
     $cp = new Checker($collection);
     if ($cp->isError() && $cp->getError() == COLLECTION_FORBIDDEN) {
         return $this->forbidden($request->getUri(), Response::HTTP_FORBIDDEN, $headers);
     }
     if (!$collection->isActive() && !$cp->canViewPageVersions()) {
         return $this->notFound('', Response::HTTP_NOT_FOUND, $headers);
     }
     $scheduledVersion = Version::get($collection, "SCHEDULED");
     if ($publishDate = $scheduledVersion->cvPublishDate) {
         $datetime = $this->app->make('helper/date');
         $now = $datetime->date('Y-m-d G:i:s');
         if (strtotime($now) >= strtotime($publishDate)) {
             $scheduledVersion->approve();
             $collection->loadVersionObject('ACTIVE');
         }
     }
     if ($cp->canEditPageContents() || $cp->canEditPageProperties() || $cp->canViewPageVersions()) {
         $collection->loadVersionObject('RECENT');
     }
     $vp = new Checker($collection->getVersionObject());
     // returns the $vp object, which we then check
     if (is_object($vp) && $vp->isError()) {
         switch ($vp->getError()) {
             case COLLECTION_NOT_FOUND:
                 return $this->notFound('', Response::HTTP_NOT_FOUND, $headers);
                 break;
             case COLLECTION_FORBIDDEN:
                 return $this->forbidden($request->getUri(), Response::HTTP_FORBIDDEN, $headers);
                 break;
         }
     }
     // Now that we've passed all permissions checks, and we have a page, we check to see if we
     // ought to redirect based on base url or trailing slash settings
     $cms = $this->app;
     $site = $this->app['site']->getSite();
     $response = $cms->handleCanonicalURLRedirection($request, $site);
     if (!$response) {
         $response = $cms->handleURLSlashes($request, $site);
     }
     if (isset($response)) {
         return $response;
     }
     $dl = $cms->make('multilingual/detector');
     if ($dl->isEnabled()) {
         $dl->setupSiteInterfaceLocalization($collection);
     }
     if (!$request->getPath() && $request->isMethod('GET') && !$request->query->has('cID')) {
         // This is a request to the home page –http://www.mysite.com/
         // First, we check to see if we need to redirect to a default multilingual section.
         if ($dl->isEnabled() && $site->getConfigRepository()->get('multilingual.redirect_home_to_default_locale')) {
             // Let's retrieve the default language
             $ms = $dl->getPreferredSection();
             if (is_object($ms)) {
                 return $this->redirect(\URL::to($ms));
             }
         }
         // Otherwise, let's check to see if our home page, which we have loaded already, has a path (like /en)
         // If it does, we'll redirect to the path.
         if ($collection->getCollectionPath() != '') {
             return $this->redirect(\URL::to($collection));
         }
     }
     $request->setCurrentPage($collection);
     $c = $collection;
     // process.php needs this
     require DIR_BASE_CORE . '/bootstrap/process.php';
     $u = new User();
     // On page view event.
     $pe = new Event($collection);
     $pe->setUser($u);
     $pe->setRequest($request);
     $this->app['director']->dispatch('on_page_view', $pe);
     // Core menu items
     $item = new RelationListItem();
     $menu = $this->app->make('helper/concrete/ui/menu');
     $menu->addMenuItem($item);
     $controller = $collection->getPageController();
     // we update the current page with the one bound to this controller.
     $collection->setController($controller);
     return $this->controller($controller);
 }