gnu-social/plugins/Favourite/Favourite.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/>.
// }}}
/**
* @author Eliseu Amaro <mail@eliseuama.ro>
* @author Diogo Peralta Cordeiro <@diogo.site>
* @copyright 2021-2022 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\Favourite;
use App\Core\Cache;
use App\Core\DB\DB;
use App\Core\Event;
use function App\Core\I18n\_m;
use App\Core\Modules\NoteHandlerPlugin;
use App\Core\Router\RouteLoader;
use App\Core\Router\Router;
use App\Entity\Activity;
use App\Entity\Actor;
use App\Entity\Feed;
use App\Entity\LocalUser;
use App\Entity\Note;
use App\Util\Common;
use App\Util\Nickname;
use DateTime;
use Plugin\Favourite\Entity\NoteFavourite as FavouriteEntity;
use Symfony\Component\HttpFoundation\Request;
class Favourite extends NoteHandlerPlugin
{
/**
* Creates a new Favourite Entity, upon the given Actor performs a Favourite
* action on the given Note object
*
* A new notification is then handled, informing all interested Actors of this action
*
* @param int $note_id Note id being favoured
* @param int $actor_id Actor performing favourite Activity
*
* @throws \App\Util\Exception\ServerException
*/
public static function favourNote(int $note_id, int $actor_id, string $source = 'web'): ?Activity
{
$opts = ['note_id' => $note_id, 'actor_id' => $actor_id];
$note_already_favoured = Cache::get(
FavouriteEntity::cacheKeys($note_id, $actor_id)['favourite'],
fn () => DB::findOneBy('note_favourite', $opts, return_null: true),
);
$activity = null;
if (\is_null($note_already_favoured)) {
DB::persist(FavouriteEntity::create($opts));
Cache::delete(FavouriteEntity::cacheKeys($note_id, $actor_id)['favourite']);
$activity = Activity::create([
'actor_id' => $actor_id,
'verb' => 'favourite',
'object_type' => 'note',
'object_id' => $note_id,
'source' => $source,
]);
DB::persist($activity);
Event::handle('NewNotification', [$actor = Actor::getById($actor_id), $activity, [], _m('{nickname} favoured note {note_id}.', ['{nickname}' => $actor->getNickname(), '{note_id}' => $activity->getObjectId()])]);
}
return $activity;
}
/**
* Removes the Favourite Entity created beforehand, by the same Actor, and on the same Note
*
* Informs all interested Actors of this action, handling out the NewNotification event
*
* @param int $note_id Note id being unfavoured
* @param int $actor_id Actor undoing favourite Activity
*
* @throws \App\Util\Exception\ServerException
*/
public static function unfavourNote(int $note_id, int $actor_id, string $source = 'web'): ?Activity
{
$note_already_favoured = Cache::get(
FavouriteEntity::cacheKeys($note_id, $actor_id)['favourite'],
static fn () => DB::findOneBy('note_favourite', ['note_id' => $note_id, 'actor_id' => $actor_id], return_null: true),
);
$activity = null;
if (!\is_null($note_already_favoured)) {
DB::removeBy(FavouriteEntity::class, ['note_id' => $note_id, 'actor_id' => $actor_id]);
Cache::delete(FavouriteEntity::cacheKeys($note_id, $actor_id)['favourite']);
$favourite_activity = DB::findBy('activity', ['verb' => 'favourite', 'object_type' => 'note', 'actor_id' => $actor_id, 'object_id' => $note_id], order_by: ['created' => 'DESC'])[0];
$activity = Activity::create([
'actor_id' => $actor_id,
'verb' => 'undo', // 'undo_favourite',
'object_type' => 'activity', // 'note',
'object_id' => $favourite_activity->getId(), // $note_id,
'source' => $source,
]);
DB::persist($activity);
Event::handle('NewNotification', [$actor = Actor::getById($actor_id), $activity, [], _m('{nickname} unfavoured note {note_id}.', ['{nickname}' => $actor->getNickname(), '{note_id}' => $activity->getObjectId()])]);
}
return $activity;
}
/**
* HTML rendering event that adds the favourite form as a note
* action, if a user is logged in
*
* @param Note $note Current Note being rendered
* @param array $actions Array containing all Note actions to be rendered
*
* @return bool Event hook, Event::next (true) is returned to allow Event to be handled by other handlers
*/
public function onAddNoteActions(Request $request, Note $note, array &$actions): bool
{
if (\is_null($user = Common::user())) {
return Event::next;
}
// If note is favourite, "is_favourite" is 1
$opts = ['note_id' => $note->getId(), 'actor_id' => $user->getId()];
$is_favourite = !\is_null(
Cache::get(
FavouriteEntity::cacheKeys($note->getId(), $user->getId())['favourite'],
static fn () => DB::findOneBy('note_favourite', $opts, return_null: true),
),
);
// Generating URL for favourite action route
$args = ['id' => $note->getId()];
$type = Router::ABSOLUTE_PATH;
$favourite_action_url = $is_favourite
? Router::url('favourite_remove', $args, $type)
: Router::url('favourite_add', $args, $type);
$query_string = $request->getQueryString();
// Concatenating get parameter to redirect the user to where he came from
$favourite_action_url .= '?from=' . urlencode($request->getRequestUri());
$extra_classes = $is_favourite ? 'note-actions-set' : 'note-actions-unset';
$favourite_action = [
'url' => $favourite_action_url,
'title' => $is_favourite ? 'Remove this note from favourites' : 'Favourite this note!',
'classes' => "button-container favourite-button-container {$extra_classes}",
'id' => 'favourite-button-container-' . $note->getId(),
];
$actions[] = $favourite_action;
return Event::next;
}
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/**
* Appends on Note currently being rendered complementary information regarding whom (subject) performed which Activity (verb) on aforementioned Note (object)
*
* @param array $vars Array containing necessary info to process event. In this case, contains the current Note being rendered
* @param array $result Contains a hashmap for each Activity performed on Note (object)
*
* @return bool Event hook, Event::next (true) is returned to allow Event to be handled by other handlers
*/
public function onAppendCardNote(array $vars, array &$result): bool
{
// If note is the original and user isn't the one who repeated, append on end "user repeated this"
// If user is the one who repeated, append on end "you repeated this, remove repeat?"
$check_user = !\is_null(Common::user());
// The current Note being rendered
$note = $vars['note'];
// Will have actors array, and action string
// Actors are the subjects, action is the verb (in the final phrase)
$favourite_actors = FavouriteEntity::getNoteFavouriteActors($note);
if (\count($favourite_actors) < 1) {
return Event::next;
}
// Filter out multiple replies from the same actor
$favourite_actors = array_unique($favourite_actors, \SORT_REGULAR);
$result[] = ['actors' => $favourite_actors, 'action' => 'favourited'];
return Event::next;
}
/**
* Deletes every favourite entity in table related to a deleted Note
*/
public function onNoteDeleteRelated(Note &$note, Actor $actor): bool
{
$note_favourites_list = FavouriteEntity::getNoteFavourites($note);
foreach ($note_favourites_list as $favourite_entity) {
DB::remove($favourite_entity);
}
return Event::next;
}
/**
* Maps Routes to their respective Controllers
*/
public function onAddRoute(RouteLoader $r): bool
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{
// Add/remove note to/from favourites
$r->connect(id: 'favourite_add', uri_path: '/object/note/{id<\d+>}/favour', target: [Controller\Favourite::class, 'favouriteAddNote']);
$r->connect(id: 'favourite_remove', uri_path: '/object/note/{id<\d+>}/unfavour', target: [Controller\Favourite::class, 'favouriteRemoveNote']);
// View all favourites by actor id
$r->connect(id: 'favourites_view_by_actor_id', uri_path: '/actor/{id<\d+>}/favourites', target: [Controller\Favourite::class, 'favouritesViewByActorId']);
$r->connect(id: 'favourites_reverse_view_by_actor_id', uri_path: '/actor/{id<\d+>}/reverse_favourites', target: [Controller\Favourite::class, 'favouritesReverseViewByActorId']);
// View all favourites by nickname
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$r->connect(id: 'favourites_view_by_nickname', uri_path: '/@{nickname<' . Nickname::DISPLAY_FMT . '>}/favourites', target: [Controller\Favourite::class, 'favouritesViewByActorNickname']);
$r->connect(id: 'favourites_reverse_view_by_nickname', uri_path: '/@{nickname<' . Nickname::DISPLAY_FMT . '>}/reverse_favourites', target: [Controller\Favourite::class, 'reverseFavouritesViewByActorNickname']);
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return Event::next;
}
/**
* Creates two feeds, including reverse favourites or favourites performed by given Actor
*
* @param int $actor_id Whom the favourites belong to
*
* @throws \App\Util\Exception\ServerException
*/
public function onCreateDefaultFeeds(int $actor_id, LocalUser $user, int &$ordering): bool
{
DB::persist(Feed::create([
'actor_id' => $actor_id,
'url' => Router::url($route = 'favourites_view_by_nickname', ['nickname' => $user->getNickname()]),
'route' => $route,
'title' => _m('Favourites'),
'ordering' => $ordering++,
]));
DB::persist(Feed::create([
'actor_id' => $actor_id,
'url' => Router::url($route = 'favourites_reverse_view_by_nickname', ['nickname' => $user->getNickname()]),
'route' => $route,
'title' => _m('Reverse favourites'),
'ordering' => $ordering++,
]));
return Event::next;
}
// ActivityPub handling and processing for Favourites is below
/**
* ActivityPub Inbox handler for Like and Undo Like activities
*
* @param Actor $actor Actor who authored the activity
* @param \ActivityPhp\Type\AbstractObject $type_activity Activity Streams 2.0 Activity
* @param mixed $type_object Activity's Object
* @param null|\Plugin\ActivityPub\Entity\ActivitypubActivity $ap_act Resulting ActivitypubActivity
*
* @throws \App\Util\Exception\ClientException
* @throws \App\Util\Exception\DuplicateFoundException
* @throws \App\Util\Exception\NoSuchActorException
* @throws \App\Util\Exception\ServerException
* @throws \Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface
*
* @return bool Returns `Event::stop` if handled, `Event::next` otherwise
*/
private function activitypub_handler(Actor $actor, \ActivityPhp\Type\AbstractObject $type_activity, mixed $type_object, ?\Plugin\ActivityPub\Entity\ActivitypubActivity &$ap_act): bool
{
if (!\in_array($type_activity->get('type'), ['Like', 'Undo'])) {
return Event::next;
}
if ($type_activity->get('type') === 'Like') { // Favourite
if ($type_object instanceof \ActivityPhp\Type\AbstractObject) {
if ($type_object->get('type') === 'Note') {
$note_id = \Plugin\ActivityPub\Util\Model\Note::fromJson($type_object)->getId();
} else {
return Event::next;
}
} elseif ($type_object instanceof Note) {
$note_id = $type_object->getId();
} else {
return Event::next;
}
} elseif ($type_object instanceof \ActivityPhp\Type\AbstractObject) {
$ap_prev_favourite_act = \Plugin\ActivityPub\Util\Model\Activity::fromJson($type_object);
$prev_favourite_act = $ap_prev_favourite_act->getActivity();
if ($prev_favourite_act->getVerb() === 'favourite' && $prev_favourite_act->getObjectType() === 'note') {
$note_id = $prev_favourite_act->getObjectId();
} else {
return Event::next;
}
} elseif ($type_object instanceof Activity) {
if ($type_object->getVerb() === 'favourite' && $type_object->getObjectType() === 'note') {
$note_id = $type_object->getObjectId();
} else {
return Event::next;
}
} else {
return Event::next;
}
if ($type_activity->get('type') === 'Like') {
$activity = self::favourNote($note_id, $actor->getId(), source: 'ActivityPub');
} else {
$activity = self::unfavourNote($note_id, $actor->getId(), source: 'ActivityPub');
}
if (!\is_null($activity)) {
// Store ActivityPub Activity
$ap_act = \Plugin\ActivityPub\Entity\ActivitypubActivity::create([
'activity_id' => $activity->getId(),
'activity_uri' => $type_activity->get('id'),
'created' => new DateTime($type_activity->get('published') ?? 'now'),
'modified' => new DateTime(),
]);
DB::persist($ap_act);
}
return Event::stop;
}
/**
* Convert an Activity Streams 2.0 Like or Undo Like into the appropriate Favourite and Undo Favourite entities
*
* @param Actor $actor Actor who authored the activity
* @param \ActivityPhp\Type\AbstractObject $type_activity Activity Streams 2.0 Activity
* @param \ActivityPhp\Type\AbstractObject $type_object Activity Streams 2.0 Object
* @param null|\Plugin\ActivityPub\Entity\ActivitypubActivity $ap_act Resulting ActivitypubActivity
*
* @throws \App\Util\Exception\ClientException
* @throws \App\Util\Exception\DuplicateFoundException
* @throws \App\Util\Exception\NoSuchActorException
* @throws \App\Util\Exception\ServerException
* @throws \Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface
*
* @return bool Returns `Event::stop` if handled, `Event::next` otherwise
*/
public function onNewActivityPubActivity(Actor $actor, \ActivityPhp\Type\AbstractObject $type_activity, \ActivityPhp\Type\AbstractObject $type_object, ?\Plugin\ActivityPub\Entity\ActivitypubActivity &$ap_act): bool
{
return $this->activitypub_handler($actor, $type_activity, $type_object, $ap_act);
}
/**
* Convert an Activity Streams 2.0 formatted activity with a known object into Entities
*
* @param Actor $actor Actor who authored the activity
* @param \ActivityPhp\Type\AbstractObject $type_activity Activity Streams 2.0 Activity
* @param mixed $type_object Object
* @param null|\Plugin\ActivityPub\Entity\ActivitypubActivity $ap_act Resulting ActivitypubActivity
*
* @throws \App\Util\Exception\ClientException
* @throws \App\Util\Exception\DuplicateFoundException
* @throws \App\Util\Exception\NoSuchActorException
* @throws \App\Util\Exception\ServerException
* @throws \Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface
* @throws \Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface
*
* @return bool Returns `Event::stop` if handled, `Event::next` otherwise
*/
public function onNewActivityPubActivityWithObject(Actor $actor, \ActivityPhp\Type\AbstractObject $type_activity, mixed $type_object, ?\Plugin\ActivityPub\Entity\ActivitypubActivity &$ap_act): bool
{
return $this->activitypub_handler($actor, $type_activity, $type_object, $ap_act);
}
/**
* Translate GNU social internal verb 'favourite' to Activity Streams 2.0 'Like'
*
* @param string $verb GNU social's internal verb
* @param null|string $gs_verb_to_activity_stream_two_verb Resulting Activity Streams 2.0 verb
*
* @return bool Returns `Event::stop` if handled, `Event::next` otherwise
*/
public function onGSVerbToActivityStreamsTwoActivityType(string $verb, ?string &$gs_verb_to_activity_stream_two_verb): bool
{
if ($verb === 'favourite') {
$gs_verb_to_activity_stream_two_verb = 'Like';
return Event::stop;
}
return Event::next;
}
}