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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.
*/
namespace OCA\News\Utility;
use \DOMDocument;
use \DOMElement;
use \DOMText;
/**
* Imports the OPML
*/
class OPMLImporter
{
/**
* The user ID to import to.
*/
private ?string $userId = null;
/**
* Intermediate data.
*/
private array $feeds = [];
private array $folders = [];
/**
* Imports the OPML
*
* @return null|array{0: list<array<string,mixed>>, 1: list<array<string,mixed>>} the items to import
*/
public function import(string $userId, string $data): ?array
{
$this->feeds = [];
$this->folders = [];
$this->userId = $userId;
$document = new DOMDocument('1.0', 'UTF-8');
$loaded = $document->loadXML($data);
if ($loaded === false) {
return null;
}
$bodies = $document->getElementsByTagName('body');
if ($bodies->count() < 1) {
return null;
}
foreach ($bodies[0]->childNodes as $node) {
if ($node instanceof DOMText) {
continue;
}
$this->outlineToItem($node);
}
return [$this->folders, $this->feeds];
}
private function outlineToItem(DOMElement $outline, ?string $parent = null): void
{
if ($outline->getAttribute('type') === 'rss') {
$feed = [
'link' => $outline->getAttribute('htmlUrl'),
'url' => $outline->getAttribute('xmlUrl'),
'title' => $outline->getAttribute('title'),
'folder' => $parent,
];
$this->feeds[] = $feed;
return;
}
$folder = ['name' => $outline->getAttribute('text'), 'parentName' => $parent];
$this->folders[] = $folder;
if ($outline->hasChildNodes() === false) {
return;
}
foreach ($outline->childNodes as $child) {
if ($child instanceof DOMText) {
continue;
}
$this->outlineToItem($child, $folder['name']);
}
}
}
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