ilNotificationUserIterator.php

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<?php

declare(strict_types=1);

namespace ILIAS\Notifications;

use ilDBInterface;
use ilDBStatement;
use Iterator;

class ilNotificationUserIterator implements Iterator
{
    private array $userids;
    private ilDBStatement $rset;
    private ilDBInterface $db;
    private array $data;
    private string $module;

    public function __construct(string $module, array $userids = [])
    {
        global $ilDB;
        $this->db = $ilDB;
        $this->userids = $userids;
        $this->module = $module;
        $this->rewind();
    }

    public function __destruct()
    {
        $this->db->free($this->rset);
    }

    public function current(): array
    {
        return $this->data;
    }

    public function key(): int
    {
        return (int) $this->data['usr_id'];
    }

    public function next(): void
    {
    }

    public function rewind(): void
    {
        $query = 'SELECT usr_id, module, channel FROM ' . ilNotificationSetupHelper::$tbl_userconfig . ' WHERE module=%s AND ' . $this->db->in('usr_id', $this->userids, false, 'integer');
        $types = array('text');
        $values = array($this->module);
        $this->rset = $this->db->queryF($query, $types, $values);
    }

    public function valid(): bool
    {
        $this->data = $this->db->fetchAssoc($this->rset);
        return is_array($this->data);
    }
}