/
preview_version.php
131 lines (110 loc) · 4.32 KB
/
preview_version.php
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<?php
namespace Concrete\Controller\Backend\Page;
use Concrete\Core\Controller\AbstractController;
use Concrete\Core\Error\UserMessageException;
use Concrete\Core\Http\ResponseFactoryInterface;
use Concrete\Core\Page\Page;
use Concrete\Core\Permission\Checker;
use Concrete\Core\User\User;
use Concrete\Core\Utility\Service\Validation\Numbers;
use Ssddanbrown\HtmlDiff\Diff;
use Symfony\Component\HttpFoundation\Response;
defined('C5_EXECUTE') or die('Access Denied.');
class PreviewVersion extends AbstractController
{
public function view(): Response
{
$page = $this->getPage();
$this->prepareRequest($page);
$this->prepareConfig();
return $this->preparePage($page) ?: $this->renderPage($page);
}
protected function getPageID(): ?int
{
$pageID = $this->request->request->get('cID', $this->request->query->get('cID'));
return $this->app->make(Numbers::class)->integer($pageID, 1) ? (int) $pageID : null;
}
protected function getVersionID(): ?int
{
$versionID = $this->request->request->get('cvID', $this->request->query->get('cvID'));
return $this->app->make(Numbers::class)->integer($versionID, 1) ? (int) $versionID : null;
}
protected function getCompareVersionID(): ?int
{
$versionID = $this->request->request->get('compareVersionID', $this->request->query->get('compareVersionID'));
return $this->app->make(Numbers::class)->integer($versionID, 1) ? (int) $versionID : null;
}
/**
* @throws \Concrete\Core\Error\UserMessageException
*/
protected function getPage(): Page
{
$pageID = $this->getPageID();
$versionID = $this->getVersionID();
if ($pageID === null || $versionID === null) {
throw new UserMessageException(t('Invalid parameters.'));
}
$page = Page::getByID($pageID, $versionID);
if (!$page || $page->isError()) {
throw new UserMessageException(t('Unable to find the page specified'));
}
$cp = new Checker($page);
if (!$cp->canViewPageVersions()) {
throw new UserMessageException(t('Access Denied.'));
}
$pageVersion = $page->getVersionObject();
if (!$pageVersion || $pageVersion->isError()) {
throw new UserMessageException(t('Unable to find the page version specified'));
}
$compareVersionID = $this->getCompareVersionID();
if ($compareVersionID) {
$page->loadVersionObject($compareVersionID);
$compareVersion = $page->getVersionObject();
if (!$compareVersion || $compareVersion->isError()) {
throw new UserMessageException(t('Unable to find the page version to compare'));
}
}
return $page;
}
protected function prepareRequest(Page $page): void
{
$this->request->setCustomRequestUser(-1);
$this->request->setCurrentPage($page);
}
protected function prepareConfig(): void
{
$this->app->make('config')->set('concrete.cache.pages', false);
}
protected function preparePage(Page $page): ?Response
{
$controller = $page->getPageController();
$response = $controller->on_start();
if ($response instanceof Response) {
return $response;
}
$response = $controller->runAction('view');
if ($response instanceof Response) {
return $response;
}
$controller->on_before_render();
return null;
}
protected function renderPage(Page $page): Response
{
$controller = $page->getPageController();
$view = $controller->getViewObject();
$content = $view->render();
$compareVersionID = $this->getCompareVersionID();
if ($compareVersionID) {
$this->requireAsset('htmldiff');
$previewPage = Page::getByID($page->getCollectionID(), $this->getVersionID());
$this->preparePage($previewPage);
$previewController = $previewPage->getPageController();
$previewView = $previewController->getViewObject();
$previewContent = $previewView->render();
$diff = new Diff($content, $previewContent);
$content = $diff->build();
}
return $this->app->make(ResponseFactoryInterface::class)->create($content);
}
}