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<?php
declare(strict_types=1);
// Nextcloud - Social Support
// SPDX-FileCopyrightText: 2022 Carl Schwan <carl@carlschwan.eu>
// SPDX-License-Identifier: AGPL-3.0-or-later
namespace OCA\Social\Service\Feed;
use OC\RedisFactory;
use OCA\Social\Entity\Status;
use OCA\Social\Service\FeedManager;
use OCA\Social\Service\IFeedProvider;
class RedisFeedProvider implements IFeedProvider {
private \Redis $redis;
public function __construct(RedisFactory $redisFactory) {
$this->redis = $redisFactory->getInstance();
}
private function key(string $feedName, string $accountId, ?string $subType = null) {
if ($subType === null) {
return 'feed:' . $feedName . ':' . $accountId;
}
return 'feed:' . $feedName . ':' . $accountId . ':' . $subType;
}
public function addToFeed(string $timelineType, string $accountId, Status $status, bool $aggregateReblog = true): bool {
$timelineKey = $this->key($timelineType, $accountId);
$reblogKey = $this->key($timelineType, $accountId, 'reblogs');
if ($status->isReblog() !== null && $aggregateReblog) {
$rank = $this->redis->zRevRank($timelineKey, $status->getReblogOf()->getId());
if ($rank !== null && $rank < FeedManager::REBLOG_FALLOFF) {
return false;
}
if ($this->redis->zAdd($reblogKey, ['NX'], $status->getId(), $status->getReblogOf()->getId())) {
$this->redis->zAdd($timelineKey, $status->getId(), $status->getReblogOf()->getId());
} else {
$reblogSetKey = $this->key($timelineType, $accountId, 'reblogs:' . $status->getReblogOf()->getId());
$this->redis->sAdd($reblogSetKey, $status->getId());
return false;
}
} else {
if ($this->redis->zScore($reblogKey, $status->getId()) === false) {
return false;
}
$this->redis->zAdd($timelineKey, $status->getId(), $status->getId());
}
return true;
}
public function removeFromFeed(string $timelineType, string $accountId, Status $status, bool $aggregateReblog = true): bool {
return false;
}
}
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