BlubberThread.php

<?php
/**
 * BlubberThread
 * Model class for BlubberThreads
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * @author      Rasmus Fuhse <fuhse@data-quest.de>
 * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
 * @category    Stud.IP
 * @since       4.5
 */

class BlubberThread extends SimpleORMap implements PrivacyObject
{
    /**
     * Configures this model.
     *
     * @param array $config Configuration array
     */
    protected static function configure($config = [])
    {
        $config['db_table'] = 'blubber_threads';

        $config['has_many']['comments'] = [
            'class_name' => BlubberComment::class,
            'on_store'   => 'store',
            'on_delete'  => 'delete',
            'order_by'   => 'ORDER BY mkdate ASC'
        ];
        $config['has_many']['mentions'] = [
            'class_name' => BlubberMention::class,
            'on_store'   => 'store',
            'on_delete'  => 'delete',
        ];
        $config['belongs_to']['user'] = [
            'class_name'        => User::class,
            'foreign_key'       => 'user_id',
            'assoc_foreign_key' => 'user_id',
        ];

        $config['serialized_fields']['metadata'] = 'JSONArrayObject';

        parent::configure($config);
    }

    public static $mention_thread_id = null;
    protected $last_visit = null;

    /**
     * Pre-Markup rule. Recognizes mentions in blubber as @username or @"Firstname lastname"
     * and turns them into usual studip-links. The mentioned person is notified by
     * sending a message to him/her as a side-effect.
     * @param StudipTransformFormat $markup
     * @param array $matches
     * @return string
     */
    public static function mention($markup, $matches)
    {
        $mention = $matches[1];
        $thread = self::find(self::$mention_thread_id);
        $username = stripslashes(mb_substr($mention, 1));
        if ($username[0] !== '"') {
            $user = User::findByUsername($username);
        } else {
            $name = mb_substr($username, 1, -1); // Strip quotes
            $user = User::findOneBySQL("CONCAT(Vorname, ' ', Nachname) = ?", [$name]);