gnu-social/components/Feed/Feed.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/>.
// }}}
namespace Component\Feed;
use App\Core\DB\DB;
use App\Core\Event;
use App\Core\Modules\Component;
use App\Entity\Actor;
use App\Entity\Subscription;
use App\Util\Formatting;
use Component\Search\Util\Parser;
use Doctrine\Common\Collections\ExpressionBuilder;
use Doctrine\ORM\Query\Expr;
use Doctrine\ORM\QueryBuilder;
class Feed extends Component
{
/**
* Perform a high level query on notes or actors
*
* Supports a variety of query terms and is used both in feeds and
* in search. Uses query builders to allow for extension
*/
public static function query(string $query, int $page, ?string $language = null, ?Actor $actor = null): array
{
$note_criteria = null;
$actor_criteria = null;
if (!empty($query = trim($query))) {
[$note_criteria, $actor_criteria] = Parser::parse($query, $language, $actor);
}
$note_qb = DB::createQueryBuilder();
$actor_qb = DB::createQueryBuilder();
$note_qb->select('note')->from('App\Entity\Note', 'note')->orderBy('note.created', 'DESC')->orderBy('note.id', 'DESC');
$actor_qb->select('actor')->from('App\Entity\Actor', 'actor')->orderBy('actor.created', 'DESC')->orderBy('actor.id', 'DESC');
Event::handle('SearchQueryAddJoins', [&$note_qb, &$actor_qb, $note_criteria, $actor_criteria]);
$notes = [];
$actors = [];
if (!\is_null($note_criteria)) {
$note_qb->addCriteria($note_criteria);
}
$notes = $note_qb->getQuery()->execute();
if (!\is_null($actor_criteria)) {
$actor_qb->addCriteria($actor_criteria);
}
$actors = $actor_qb->getQuery()->execute();
// N.B.: Scope is only enforced at FeedController level
return ['notes' => $notes ?? null, 'actors' => $actors ?? null];
}
public function onSearchQueryAddJoins(QueryBuilder &$note_qb, QueryBuilder &$actor_qb)
{
$note_qb->leftJoin(Subscription::class, 'subscription', Expr\Join::WITH, 'note.actor_id = subscription.subscribed')
->leftJoin(Actor::class, 'note_actor', Expr\Join::WITH, 'note.actor_id = note_actor.id');
return Event::next;
}
/**
* Convert $term to $note_expr and $actor_expr, search criteria. Handles searching for text
* notes, for different types of actors and for the content of text notes
*/
public function onSearchCreateExpression(ExpressionBuilder $eb, string $term, ?string $language, ?Actor $actor, &$note_expr, &$actor_expr)
{
if (str_contains($term, ':')) {
$term = explode(':', $term);
if (Formatting::startsWith($term[0], 'note-')) {
switch ($term[0]) {
case 'note-local':
$note_expr = $eb->eq('note.is_local', filter_var($term[1], \FILTER_VALIDATE_BOOLEAN));
break;
case 'note-types':
case 'notes-include':
case 'note-filter':
if (\is_null($note_expr)) {
$note_expr = [];
}
if (array_intersect(explode(',', $term[1]), ['text', 'words']) !== []) {
$note_expr[] = $eb->neq('note.content', null);
} else {
$note_expr[] = $eb->eq('note.content', null);
}
break;
case 'note-conversation':
$note_expr = $eb->eq('note.conversation_id', (int) trim($term[1]));
break;
case 'note-from':
case 'notes-from':
$subscribed_expr = $eb->eq('subscription.subscriber', $actor->getId());
$type_consts = [];
if ($term[1] === 'subscribed') {
$type_consts = null;
}
foreach (explode(',', $term[1]) as $from) {
if (str_starts_with($from, 'subscribed-')) {
[, $type] = explode('-', $from);
if (\in_array($type, ['actor', 'actors'])) {
$type_consts = null;
} else {
$type_consts[] = \constant(Actor::class . '::' . mb_strtoupper($type));
}
}
}
if (\is_null($type_consts)) {
$note_expr = $subscribed_expr;
} elseif (!empty($type_consts)) {
$note_expr = $eb->andX($subscribed_expr, $eb->in('note_actor.type', $type_consts));
}
break;
}
} elseif (Formatting::startsWith($term, 'actor-')) {
switch ($term[0]) {
case 'actor-types':
case 'actors-include':
case 'actor-filter':
case 'actor-local':
if (\is_null($actor_expr)) {
$actor_expr = [];
}
foreach (
[
Actor::PERSON => ['person', 'people'],
Actor::GROUP => ['group', 'groups'],
Actor::ORGANIZATION => ['org', 'orgs', 'organization', 'organizations', 'organisation', 'organisations'],
Actor::BUSINESS => ['business', 'businesses'],
Actor::BOT => ['bot', 'bots'],
] as $type => $match) {
if (array_intersect(explode(',', $term[1]), $match) !== []) {
$actor_expr[] = $eb->eq('actor.type', $type);
} else {
$actor_expr[] = $eb->neq('actor.type', $type);
}
}
break;
}
}
} else {
$note_expr = $eb->contains('note.content', $term);
}
return Event::next;
}
}