gnu-social/plugins/ActivityPub/lib/models/Activitypub_like.php

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<?php
// 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
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
* @link http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_like
{
/**
* Generates an ActivityPub representation of a Like
*
* @param string $actor Actor URI
* @param Notice $notice Notice URI
* @return array pretty array to be used in a response
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function like_to_array(string $actor, Notice $notice): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => Activitypub_notice::getUri($notice),
'type' => 'Like',
'actor' => $actor,
'object' => Activitypub_notice::getUri($notice->getParent()),
];
return $res;
}
/**
* Save a favorite record.
*
* @param string $uri
* @param Profile $actor the local or remote Profile who favorites
* @param Notice $target the notice that is favorited
* @return Notice record on success
* @throws AlreadyFulfilledException
* @throws ClientException
* @throws NoticeSaveException
* @throws ServerException
*/
public static function addNew(string $uri, Profile $actor, Notice $target): Notice
{
if (Fave::existsForProfile($target, $actor)) {
// TRANS: Client error displayed when trying to mark a notice as favorite that already is a favorite.
throw new AlreadyFulfilledException(_m('You have already favorited this!'));
}
$act = new Activity();
$act->type = ActivityObject::ACTIVITY;
$act->verb = ActivityVerb::FAVORITE;
$act->time = time();
$act->id = $uri;
$act->title = _m('Favor');
// TRANS: Message that is the "content" of a favorite (%1$s is the actor's nickname, %2$ is the favorited
// notice's nickname and %3$s is the content of the favorited notice.)
$act->content = sprintf(
_m('%1$s favorited something by %2$s: %3$s'),
$actor->getNickname(),
$target->getProfile()->getNickname(),
$target->getRendered()
);
$act->actor = $actor->asActivityObject();
$act->target = $target->asActivityObject();
$act->objects = [clone($act->target)];
$url = common_local_url('AtomPubShowFavorite', ['profile'=>$actor->id, 'notice'=>$target->id]);
$act->selfLink = $url;
$act->editLink = $url;
$options = [
'source' => 'ActivityPub',
'uri' => $act->id,
'url' => $url,
'is_local' => ($actor->isLocal() ? Notice::LOCAL_PUBLIC : Notice::REMOTE),
'scope' => $target->getScope(),
];
// saveActivity will in turn also call Fave::saveActivityObject
return Notice::saveActivity($act, $actor, $options);
}
}