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<?php
declare(strict_types=1);
/**
* Nextcloud - Social Support
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Maxence Lange <maxence@artificial-owl.com>
* @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Social\Service;
use daita\MySmallPhpTools\Exceptions\MalformedArrayException;
use daita\MySmallPhpTools\Traits\TArrayTools;
use OCA\Social\AP;
use OCA\Social\Db\FollowsRequest;
use OCA\Social\Exceptions\CacheActorDoesNotExistException;
use OCA\Social\Exceptions\FollowDoesNotExistException;
use OCA\Social\Exceptions\FollowSameAccountException;
use OCA\Social\Exceptions\InvalidOriginException;
use OCA\Social\Exceptions\InvalidResourceException;
use OCA\Social\Exceptions\RedundancyLimitException;
use OCA\Social\Exceptions\RequestContentException;
use OCA\Social\Exceptions\RequestResultNotJsonException;
use OCA\Social\Exceptions\RetrieveAccountFormatException;
use OCA\Social\Exceptions\RequestNetworkException;
use OCA\Social\Exceptions\RequestResultSizeException;
use OCA\Social\Exceptions\RequestServerException;
use OCA\Social\Exceptions\SocialAppConfigException;
use OCA\Social\Exceptions\ItemUnknownException;
use OCA\Social\Exceptions\UrlCloudException;
use OCA\Social\Model\ActivityPub\Object\Follow;
use OCA\Social\Model\ActivityPub\Activity\Undo;
use OCA\Social\Model\ActivityPub\Actor\Person;
use OCA\Social\Model\ActivityPub\OrderedCollection;
use OCA\Social\Model\InstancePath;
class FollowService {
use TArrayTools;
/** @var FollowsRequest */
private $followsRequest;
/** @var ActivityService */
private $activityService;
/** @var CacheActorService */
private $cacheActorService;
/** @var ConfigService */
private $configService;
/** @var MiscService */
private $miscService;
/** @var Person */
private $viewer = null;
/**
* FollowService constructor.
*
* @param FollowsRequest $followsRequest
* @param ActivityService $activityService
* @param CacheActorService $cacheActorService
* @param ConfigService $configService
* @param MiscService $miscService
*/
public function __construct(
FollowsRequest $followsRequest, ActivityService $activityService,
CacheActorService $cacheActorService,
ConfigService $configService, MiscService $miscService
) {
$this->followsRequest = $followsRequest;
$this->activityService = $activityService;
$this->cacheActorService = $cacheActorService;
$this->configService = $configService;
$this->miscService = $miscService;
}
/**
* @param Person $viewer
*/
public function setViewer(Person $viewer) {
$this->viewer = $viewer;
$this->followsRequest->setViewer($viewer);
}
/**
* @param Person $actor
* @param string $account
*
* @throws CacheActorDoesNotExistException
* @throws FollowSameAccountException
* @throws InvalidOriginException
* @throws InvalidResourceException
* @throws MalformedArrayException
* @throws RedundancyLimitException
* @throws RetrieveAccountFormatException
* @throws SocialAppConfigException
* @throws ItemUnknownException
* @throws UrlCloudException
* @throws RequestContentException
* @throws RequestNetworkException
* @throws RequestResultSizeException
* @throws RequestServerException
* @throws RequestResultNotJsonException
*/
public function followAccount(Person $actor, string $account) {
$remoteActor = $this->cacheActorService->getFromAccount($account);
if ($remoteActor->getId() === $actor->getId()) {
throw new FollowSameAccountException("Don't follow yourself, be your own lead");
}
/** @var Follow $follow */
$follow = AP::$activityPub->getItemFromType(Follow::TYPE);
$follow->generateUniqueId();
$follow->setActorId($actor->getId());
$follow->setObjectId($remoteActor->getId());
$follow->setFollowId($remoteActor->getFollowers());
try {
$this->followsRequest->getByPersons($actor->getId(), $remoteActor->getId());
} catch (FollowDoesNotExistException $e) {
$this->followsRequest->save($follow);
$follow->addInstancePath(
new InstancePath(
$remoteActor->getInbox(), InstancePath::TYPE_INBOX, InstancePath::PRIORITY_TOP
)
);
$this->activityService->request($follow);
}
}
/**
* @param Person $actor
* @param string $account
*
* @throws CacheActorDoesNotExistException
* @throws InvalidOriginException
* @throws InvalidResourceException
* @throws MalformedArrayException
* @throws RedundancyLimitException
* @throws RequestContentException
* @throws RetrieveAccountFormatException
* @throws RequestNetworkException
* @throws RequestResultSizeException
* @throws RequestServerException
* @throws SocialAppConfigException
* @throws ItemUnknownException
* @throws UrlCloudException
* @throws RequestResultNotJsonException
*/
public function unfollowAccount(Person $actor, string $account) {
$remoteActor = $this->cacheActorService->getFromAccount($account);
try {
$follow = $this->followsRequest->getByPersons($actor->getId(), $remoteActor->getId());
$this->followsRequest->delete($follow);
$undo = AP::$activityPub->getItemFromType(Undo::TYPE);
$follow->setParent($undo);
$undo->generateUniqueId('#undo/follows');
$undo->setObject($follow);
$undo->setActorId($actor->getId());
$undo->addInstancePath(
new InstancePath(
$remoteActor->getInbox(), InstancePath::TYPE_INBOX, InstancePath::PRIORITY_TOP
)
);
$this->activityService->request($undo);
} catch (FollowDoesNotExistException $e) {
}
}
/**
* @param Person $local
* @param Person $actor
*
* @return array
*/
public function getLinksBetweenPersons(Person $local, Person $actor): array {
$links = [
'follower' => false,
'following' => false
];
try {
$this->followsRequest->getByPersons($local->getId(), $actor->getId());
$links['following'] = true;
} catch (FollowDoesNotExistException $e) {
}
try {
$this->followsRequest->getByPersons($actor->getId(), $local->getId());
$links['follower'] = true;
} catch (FollowDoesNotExistException $e) {
}
return $links;
}
/**
* @param Person $actor
*
* @return Person[]
*/
public function getFollowers(Person $actor): array {
return $this->followsRequest->getFollowersByActorId($actor->getId());
}
/**
* @param Person $actor
*
* @return OrderedCollection
*/
public function getFollowersCollection(Person $actor): OrderedCollection {
$collection = new OrderedCollection();
$collection->setId($actor->getFollowers());
$collection->setTotalItems(20);
$collection->setFirst('...');
return $collection;
}
/**
* @param Person $actor
*
* @return Person[]
*/
public function getFollowing(Person $actor): array {
return $this->followsRequest->getFollowingByActorId($actor->getId());
}
/**
* @param Person $actor
*
* @return OrderedCollection
*/
public function getFollowingCollection(Person $actor): OrderedCollection {
$collection = new OrderedCollection();
// $collection->setId($actor->getFollowers());
// $collection->setTotalItems(20);
// $collection->setFirst('...');
return $collection;
}
}
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