yf_notifications user module

    public function check()
    {
        main()->NO_GRAPHICS = true;
        $out = [];

        $online_class = _class('online_users', 'classes/');
        $online_class->process();
        // user part
        $R = db()->get_all('SELECT `id`,`notification_id` FROM `' . db('notifications_receivers') . "` WHERE `receiver_id`='" . $online_class->online_user_id . "' AND `receiver_type`='" . $online_class->online_user_type . "' AND `is_read`=0");
        $notifications_ids = [];
        foreach ((array) $R as $A) {
            $notifications_ids[$A['id']] = $A['notification_id'];
        }
        if (count((array) $notifications_ids) != 0) {
            $notifications = db()->get_all('SELECT `id`,`title`,`content`,`add_date` FROM `' . db('notifications') . '` WHERE `id` IN (' . implode(',', $notifications_ids) . ')');
            $add_info = db()->get_all('SELECT `id`,`text`,`url` FROM `' . db('notifications_receivers_add_info') . '` WHERE `id` IN (' . implode(',', array_keys($notifications_ids)) . ')');
            foreach ($notifications_ids as $k => $v) {
                $out[$k] = [
                    'id' => $k,
                    'title' => $notifications[$v]['title'],
                    'content' => $notifications[$v]['content'],
                    'add_date' => $notifications[$v]['add_date'],
                    'text' => $add_info[$k]['text'],
                    'url' => $add_info[$k]['url'] != '' ? process_url($add_info[$k]['url'] . '&notification_id=' . $k) : '',
                ];
            }
        }
        echo json_encode($out);
        exit;
    }

    public function read()
    {
        $online_class = _class('online_users', 'classes/');
        $online_class->process();

        main()->NO_GRAPHICS = true;
        db()->query('UPDATE `' . db('notifications_receivers') . "` SET `is_read`=1 WHERE `receiver_id`='" . $online_class->online_user_id . "' AND `receiver_type`='" . $online_class->online_user_type . "' AND `id`=" . (int) (($_POST['id'] ?? null)));
        echo 'OK';
        exit;
    }

    public function _add_receiver_user($name, $user_id, $text = '', $url = '')
    {
        $notification_id = db()->get_one('SELECT `id` FROM `' . db('notifications') . "` WHERE `id`='" . _es($name) . "' 
                                        OR (`is_common_template`=1 AND `template_alias` = '" . _es($name) . "')");
        if ((int) $notification_id == 0) {
            return false;
        }
        $hash = md5($url . $text . (int) $notification_id . (int) $user_id . $this->salt);
        $A = db()->get('SELECT * FROM `' . db('notifications_receivers') . "` WHERE `hash`='{$hash}'");
        if ( ! empty($A)) {
            if ($A['is_read'] == 1) {
                db()->query('UPDATE `' . db('notifications_receivers') . "` SET `is_read`=0 WHERE `hash`='{$hash}'");
                return true;
            }
            return false;
        }


        db()->insert(db('notifications_receivers'), [
            'notification_id' => (int) $notification_id,
            'receiver_type' => 'user_id',
            'receiver_id' => (int) $user_id,
            'is_read' => 0,
            'hash' => $hash,
        ]);

        if (($text != '') || ($url != '')) {
            $id = db()->insert_id();
            db()->replace(db('notifications_receivers_add_info'), [
                'id' => (int) $id,
                'text' => db()->es_for_builder($text),
                'url' => db()->es_for_builder($url),
            ]);
        }
        return true;
    }

    public function _prepare()
    {
        if ((int) (($_GET['notification_id'] ?? null)) != 0) {
            db()->query('UPDATE `' . db('notifications_receivers') . "` SET `is_read`=1 WHERE `receiver_id`='" . (int) (main()->USER_ID) . "' AND `receiver_type`='user_id' AND `id`=" . (int) (($_GET['notification_id'] ?? null)));
        }
        if (conf('IS_AJAX')) {
            return false;
        }
        $tpl = file_get_contents(pathinfo(__FILE__, PATHINFO_DIRNAME) . '/../templates/user/notifications/notifications_js.stpl');
        $func_name = 'url_' . main()->type;
        $obj_name = main()->type == 'admin' ? 'notifications_admin' : 'notifications';
        $replace = [
            'url_check' => $func_name("/{$obj_name}/check"),
            'url_read' => $func_name("/{$obj_name}/read"),
        ];
        js(tpl()->parse_string($tpl, $replace));
        css('//cdnjs.cloudflare.com/ajax/libs/pnotify/2.0.0/pnotify.all.min.css');
        js('//cdnjs.cloudflare.com/ajax/libs/pnotify/2.0.0/pnotify.all.min.js');
    }