nextcloud-gpodder/lib/Core/PodcastData/PodcastDataCache.php
2022-10-28 09:50:44 +02:00

67 lines
1.7 KiB
PHP

<?php
declare(strict_types=1);
namespace OCA\GPodderSync\Core\PodcastData;
use OCP\Http\Client\IClient;
use OCP\Http\Client\IClientService;
use OCP\ICache;
use OCP\ICacheFactory;
class PodcastDataCache {
private ?ICache $cache = null;
private IClient $httpClient;
public function __construct(
ICacheFactory $cacheFactory,
IClientService $httpClientService,
) {
if ($cacheFactory->isLocalCacheAvailable()) {
$this->cache = $cacheFactory->createLocal('GPodderSync-Podcasts');
}
$this->httpClient = $httpClientService->newClient();
}
public function getCachedOrFetchPodcastData(string $url): PodcastData {
if ($this->cache == null) {
return $this->fetchPodcastData($url);
}
$oldData = $this->tryGetCachedPodcastData($url);
if ($oldData) {
return $oldData;
}
$newData = $this->fetchPodcastData($url);
$this->trySetCachedPodcastData($url, $newData);
return $newData;
}
public function fetchPodcastData(string $url): PodcastData {
$resp = $this->httpClient->get($url);
$statusCode = $resp->getStatusCode();
if ($statusCode < 200 || $statusCode >= 300) {
throw new \ErrorException("Podcast RSS URL returned non-2xx status code: $statusCode");
}
$body = $resp->getBody();
return PodcastData::parseXml($body);
}
public function tryGetCachedPodcastData(string $url): ?PodcastData {
$oldData = $this->cache->get($url);
if (!$oldData) {
return null;
}
return new PodcastData(
title: $oldData['title'],
author: $oldData['author'],
link: $oldData['link'],
description: $oldData['description'],
image: $oldData['image'],
fetchedAtUnix: $oldData['fetchedAtUnix'],
);
}
public function trySetCachedPodcastData(string $url, PodcastData $data) {
$this->cache->set($url, $data->toArray());
}
}