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<?php
/**
* Nextcloud - News
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Alessandro Cosentino <cosenal@gmail.com>
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @copyright 2012 Alessandro Cosentino
* @copyright 2012-2014 Bernhard Posselt
*/
namespace OCA\News\Utility;
use \DOMDocument;
use \DOMElement;
use OCA\News\Db\Feed;
use OCA\News\Db\Folder;
/**
* Exports the OPML
*/
class OPMLExporter
{
/**
* Generates the OPML for the active user
*
* @param Folder[] $folders
* @param Feed[] $feeds
* @return DOMDocument the document
*/
public function build(array $folders, array $feeds)
{
$document = new DOMDocument('1.0', 'UTF-8');
$document->formatOutput = true;
$root = $document->createElement('opml');
$root->setAttribute('version', '2.0');
// head
$head = $document->createElement('head');
$title = $document->createElement('title', 'Subscriptions');
$head->appendChild($title);
$root->appendChild($head);
// body
$body = $document->createElement('body');
// feeds with folders
foreach ($folders as $folder) {
$folderOutline = $document->createElement('outline');
$folderOutline->setAttribute('title', $folder->getName());
$folderOutline->setAttribute('text', $folder->getName());
// feeds in folders
foreach ($feeds as $feed) {
if ($feed->getFolderId() === $folder->getId()) {
$feedOutline = $this->createFeedOutline($feed, $document);
$folderOutline->appendChild($feedOutline);
}
}
$body->appendChild($folderOutline);
}
// feeds without folders
foreach ($feeds as $feed) {
if ($feed->getFolderId() === null) {
$feedOutline = $this->createFeedOutline($feed, $document);
$body->appendChild($feedOutline);
}
}
$root->appendChild($body);
$document->appendChild($root);
return $document;
}
/**
* @param Feed $feed
* @param DOMDocument $document
* @return DOMElement
*/
protected function createFeedOutline(Feed $feed, DOMDocument $document)
{
$feedOutline = $document->createElement('outline');
$attributes = [
'title' => $feed->getTitle(),
'text' => $feed->getTitle(),
'type' => 'rss',
'xmlUrl' => $feed->getUrl(),
'htmlUrl' => $feed->getLink(),
];
foreach ($attributes as $name => $value) {
$feedOutline->setAttribute($name, $value ?? '');
}
return $feedOutline;
}
}
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