forked from GNUsocial/gnu-social
112 lines
3.7 KiB
PHP
112 lines
3.7 KiB
PHP
<?php
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declare(strict_types = 1);
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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/**
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* Base class for feed controllers
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*
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* @package GNUsocial
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* @category Controller
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*
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* @author Hugo Sales <hugo@hsal.es>
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* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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namespace Component\Feed\Util;
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use App\Core\Controller;
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use App\Core\Event;
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use function App\Core\I18n\_m;
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use App\Entity\Actor;
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use App\Entity\Note;
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use App\Util\Common;
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use App\Util\Exception\ClientException;
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use App\Util\Formatting;
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use Functional as F;
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abstract class FeedController extends Controller
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{
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/**
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* Post-processing of the result of a feed controller, to remove any
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* notes or actors the user specified, as well as format the raw
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* list of notes into a usable format
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*/
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protected function postProcess(array $result): array
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{
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$actor = Common::actor();
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if (\array_key_exists('notes', $result)) {
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$notes = $result['notes'];
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self::enforceScope($notes, $actor);
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$types = $this->string('types');
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if (!\is_null($types)) {
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self::filterNoteType($notes, $types);
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}
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Event::handle('FilterNoteList', [$actor, &$notes, $result['request']]);
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Event::handle('FormatNoteList', [$notes, &$result['notes']]);
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}
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return $result;
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}
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private static function filterNoteType(array &$notes, string $types): void
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{
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$types = explode(',', $types);
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$types = [
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...$types,
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// Add any missing types as a negation
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...array_diff(['!media', '!link', '!text', '!tags'], F\map($types, fn ($t) => $t[0] === '!' ? $t : '!' . $t)),
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];
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$notes = F\select($notes, function (Note $note) use ($types) {
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$include = false;
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foreach ($types as $type) {
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$is_negate = $type[0] === '!';
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$type = Formatting::removePrefix($type, '!');
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$ret = (function () use ($note, $type) {
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switch ($type) {
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case 'media':
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return !empty($note->getAttachments());
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case 'link':
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return !empty($note->getLinks());
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case 'text':
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return !\is_null($note->getContent());
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case 'tags':
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return !empty($note->getTags());
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default:
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throw new ClientException(_m('Unknown note type requested ({type})', ['{type}' => $type]));
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}
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})();
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if ($is_negate && $ret) {
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return false;
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}
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$include = $include || $ret;
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}
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return $include;
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});
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}
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private static function enforceScope(array &$notes, ?Actor $actor): void
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{
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$notes = F\select($notes, fn (Note $n) => $n->isVisibleTo($actor));
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}
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}
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