Stepper::activityBatchAction

public function activityBatchAction(array $list, $total=0, $start=0)
{
	$batch = array_slice($list, 0, static::BATCH_LENGTH, true);
	$slice = array_slice($list, static::BATCH_LENGTH, null, true);

	$start += count($batch);

	$b = $this->getUnprocessedItems($batch);
	$batch = $b->getData();

	foreach (array_keys($batch) as $orderId)
	{
		OrderTable::update($orderId, ['IS_SYNC_B24' => 'Y']);
	}

	$result['progress'] = round((100*$start)/$total);

	$result['process'] = [
		'items' => $batch,
		'list' => $slice,
		'total' => $total,
		'start' => $start
	];

	if($start == $total)
	{
		$result['finish'] = true;
	}

	if(count($b->getErrorMessages())>0)
	{
		$result['error'] = implode("
", $b->getErrorMessages());
	}
	return $result;
}