gnu-social/plugins/ActivityPub/Util/Model/ActivityFollow.php

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<?php
declare(strict_types = 1);
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
* @category ActivityPub
*
* @author Diogo Peralta Cordeiro <@diogo.site>
* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\ActivityPub\Util\Model;
use ActivityPhp\Type\AbstractObject;
use App\Core\DB\DB;
use App\Entity\Activity as GSActivity;
use App\Util\Exception\ClientException;
use Component\Subscription\Subscription;
use DateTime;
use InvalidArgumentException;
use Plugin\ActivityPub\Entity\ActivitypubActivity;
/**
* This class handles translation between JSON and ActivityPub Follows
*
* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class ActivityFollow extends Activity
{
protected static function handle_core_activity(\App\Entity\Actor $actor, AbstractObject $type_activity, mixed $type_object, ?ActivitypubActivity &$ap_act): ActivitypubActivity
{
if ($type_object instanceof AbstractObject) {
$subscribed = Actor::fromJson($type_object)->getActorId();
} elseif ($type_object instanceof \App\Entity\Actor) {
$subscribed = $type_object;
} else {
throw new InvalidArgumentException('Follow{:Object} should be either an AbstractObject or an Actor.');
}
// Execute Subscribe
$act = Subscription::subscribe($actor, $subscribed, 'ActivityPub');
if (\is_null($act)) {
throw new ClientException('You are already subscribed to this actor.');
}
// Store ActivityPub Activity
$ap_act = ActivitypubActivity::create([
'activity_id' => $act->getId(),
'activity_uri' => $type_activity->get('id'),
'created' => new DateTime($type_activity->get('published') ?? 'now'),
'modified' => new DateTime(),
]);
DB::persist($ap_act);
return $ap_act;
}
public static function handle_undo(\App\Entity\Actor $actor, AbstractObject $type_activity, GSActivity $type_object, ?ActivitypubActivity &$ap_act): ActivitypubActivity
{
// Execute Unsubscribe
$act = Subscription::unsubscribe($actor, $type_object->getObjectId(), 'ActivityPub');
if (\is_null($act)) {
throw new ClientException('You are already unsubscribed of this actor.');
}
// Store ActivityPub Activity
$ap_act = ActivitypubActivity::create([
'activity_id' => $act->getId(),
'activity_uri' => $type_activity->get('id'),
'created' => new DateTime($type_activity->get('published') ?? 'now'),
'modified' => new DateTime(),
]);
DB::persist($ap_act);
return $ap_act;
}
}