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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Dashboard\Widgets;
use Psr\Http\Message\ServerRequestInterface;
use TYPO3\CMS\Backend\View\BackendViewFactory;
use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface as Cache;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Fluid\View\StandaloneView;
/**
* Concrete RSS widget implementation
*
* The widget will show a certain number of items of the given RSS feed. The feed will be set by the feedUrl option. You
* can add a button to the widget by defining a button provider.
*
* The following options are available during registration:
* - feedUrl string Defines the URL or file providing the RSS Feed.
* This is read by the widget in order to fetch entries to show.
* - limit int default: 5 Defines how many RSS items should be shown.
* - lifetime int default: 43200 Defines how long to wait, in seconds, until fetching RSS Feed again
*
* @see ButtonProviderInterface
*/
class RssWidget implements WidgetInterface, RequestAwareWidgetInterface
{
/**
* @var array{limit: int, lifeTime: int, feedUrl?: string}
*/
private readonly array $options;
private ServerRequestInterface $request;
public function __construct(
private readonly WidgetConfigurationInterface $configuration,
private readonly Cache $cache,
private readonly BackendViewFactory $backendViewFactory,
// @deprecated since v12, will be removed in v13 together with services 'dashboard.views.widget' and Factory
protected readonly ?StandaloneView $view = null,
private readonly ?ButtonProviderInterface $buttonProvider = null,
array $options = [],
) {
$this->options = array_merge(
[
'limit' => 5,
'lifeTime' => 43200,
],
$options
);
}
public function setRequest(ServerRequestInterface $request): void
{
$this->request = $request;
}
public function renderWidgetContent(): string
{
$view = $this->backendViewFactory->create($this->request);
$view->assignMultiple([
'items' => $this->getRssItems(),
'options' => $this->options,
'button' => $this->buttonProvider,
'configuration' => $this->configuration,
]);
return $view->render('Widget/RssWidget');
}
protected function getRssItems(): array
{
if (empty($this->options['feedUrl'])) {
return [];
}
$cacheHash = md5($this->options['feedUrl']);
if ($items = $this->cache->get($cacheHash)) {
return $items;
}
$rssContent = GeneralUtility::getUrl($this->options['feedUrl']);
if ($rssContent === false) {
throw new \RuntimeException('RSS URL could not be fetched', 1573385431);
}
$rssFeed = simplexml_load_string($rssContent);
$items = [];
foreach ($rssFeed->channel->item as $item) {
$items[] = [
'title' => trim((string)$item->title),
'link' => trim((string)$item->link),
'pubDate' => trim((string)$item->pubDate),
'description' => trim(strip_tags((string)$item->description)),
];
}
usort($items, static function ($item1, $item2) {
return new \DateTime($item2['pubDate']) <=> new \DateTime($item1['pubDate']);
});
$items = array_slice($items, 0, $this->options['limit']);
$this->cache->set($cacheHash, $items, ['dashboard_rss'], $this->options['lifeTime']);
return $items;
}
public function getOptions(): array
{
return $this->options;
}
}