ilNotificationUserIterator.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Notifications;
 
use ilDBInterface;
use ilDBStatement;
use Iterator;
use ilDBConstants;
 
class ilNotificationUserIterator implements Iterator
{
    private ilDBStatement $rset;
    private readonly ilDBInterface $db;
    private ?array $data = null;
 
    public function __construct(private readonly string $module, private readonly array $userids = [])
    {
        global $DIC;
 
        $this->db = $DIC->database();
        $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,
            ilDBConstants::T_INTEGER
        );
        $types = [ilDBConstants::T_TEXT];
        $values = [$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);
    }
}