public function execute($subpage)
 {
     wfProfileIn(__METHOD__);
     $this->games = WF::build('ScavengerHuntGames');
     $this->setHeaders();
     $this->mTitle = SpecialPage::getTitleFor('scavengerhunt');
     if ($this->isRestricted() && !$this->userCanExecute($this->user)) {
         $this->displayRestrictionError();
         return;
     }
     @(list($action, $id) = explode('/', $subpage));
     $action = !empty($action) ? $action : 'list';
     $id = (int) $id;
     $game = $this->games->findById($id);
     if (empty($game)) {
         $game = $this->games->newGame();
     }
     // check edit tokens
     if ($this->request->wasPosted() && !$this->user->matchEditToken($this->request->getVal('wpEditToken'))) {
         NotificationsController::addConfirmation(wfMsg('scavengerhunt-edit-token-mismatch'), NotificationsController::CONFIRMATION_ERROR);
         $this->out->redirect($this->mTitle->getFullUrl());
         return;
     }
     $this->out->addStyle(AssetsManager::getInstance()->getSassCommonURL('extensions/wikia/ScavengerHunt/css/scavenger-special.scss'));
     $this->out->addStyle(AssetsManager::getInstance()->getSassCommonURL('extensions/wikia/ScavengerHunt/css/scavenger-game.scss'));
     $this->out->addScriptFile($this->app->getGlobal('wgExtensionsPath') . '/wikia/ScavengerHunt/js/scavenger-special.js');
     $template = WF::build('EasyTemplate', array(dirname(__FILE__) . '/templates/'));
     $errors = array();
     switch ($action) {
         case 'list':
             $button = '<a class="wikia-button scavengerhunt-add-button" href="' . $this->mTitle->getFullUrl() . '/add">' . XML::element('img', array('class' => 'sprite new', 'src' => $this->app->getGlobal('wgBlankImgUrl'))) . wfMsg('scavengerhunt-button-add') . '</a>';
             $this->out->mPagetitle .= $button;
             $this->out->mPageLinkTitle = true;
             // Games list
             $pager = WF::build('ScavengerHuntGamesPager', array($this->games, $this->mTitle->getFullUrl(), $template));
             $this->out->addHTML($pager->getBody() . $pager->getNavigationBar());
             break;
         case 'toggle':
             $enable = !$game->isEnabled();
             $game->setEnabled($enable);
             $errors = $this->validateGame($game);
             if (empty($errors['errors'])) {
                 $game->save();
                 NotificationsController::addConfirmation($enable ? wfMsg('scavengerhunt-game-has-been-enabled') : wfMsg('scavengerhunt-game-has-been-disabled'));
                 //success! go to the list
                 $this->out->redirect($this->mTitle->getFullUrl());
                 return;
             } else {
                 //failure - display errors
                 $game->setEnabled(false);
             }
             // no "break" on purpose - wasPosted() will return false but we'll display proper template
         // no "break" on purpose - wasPosted() will return false but we'll display proper template
         case 'edit':
             if ($this->request->wasPosted()) {
                 if ($this->request->getVal('enable')) {
                     $enabled = !$this->request->getVal('prevEnabled');
                     $game->setEnabled($enabled);
                     $errors = $this->validateGame($game);
                     if (empty($errors['errors'])) {
                         $game->save();
                         NotificationsController::addConfirmation($enabled ? wfMsg('scavengerhunt-game-has-been-enabled') : wfMsg('scavengerhunt-game-has-been-disabled'));
                         $this->out->redirect($this->mTitle->getFullUrl() . "/edit/{$id}");
                         return;
                     } else {
                         $game->setEnabled(false);
                     }
                 } else {
                     if ($this->request->getVal('delete')) {
                         $game->delete();
                         NotificationsController::addConfirmation(wfMsg('scavengerhunt-game-has-been-deleted'));
                         $this->out->redirect($this->mTitle->getFullUrl());
                         return;
                     }
                 }
             }
             // no "break" on purpose
         // no "break" on purpose
         case 'add':
             if ($this->request->wasPosted()) {
                 if ($this->request->getVal('save')) {
                     $game = $this->updatePostedGame($game);
                     // move the validation process to the moment of enabling the game
                     $errors = $this->validateGame($game);
                     // save changes
                     if (empty($errors['errors']) && $game->save()) {
                         NotificationsController::addConfirmation($action == 'add' ? wfMsg('scavengerhunt-game-has-been-created') : wfMsg('scavengerhunt-game-has-been-saved'));
                         $this->out->redirect($this->mTitle->getFullUrl());
                         return;
                     } else {
                         NotificationsController::addConfirmation(wfMsg('scavengerhunt-game-has-not-been-saved'), NotificationsController::CONFIRMATION_NOTIFY);
                     }
                 }
             }
             $template->set('errors', isset($errors['errors']) ? $errors['errors'] : array());
             $template->set('highlight', isset($errors['highlight']) ? $errors['highlight'] : array());
             $template->set('editToken', $this->user->getEditToken());
             $template->set_vars($this->getTemplateVarsFromGame($game));
             $this->out->addHTML($template->render('form'));
             break;
     }
     wfProfileOut(__METHOD__);
 }