Process::addStage

public function addStage($params)
{
	if (empty($params['CODE']) || empty($params['CALLBACK']))
	{
		throw new MainSystemException('Not enought params to add stage');
	}

	$ss = (int)($params['STEP_SIZE'] ?? 0);
	$order = count($this->stages);
	$type = (string)($params['TYPE'] ?? '');
	if ($type === '')
	{
		$type = static::CALLBACK_TYPE_MANUAL;
	}

	$beforeCallback = (string)($params['ON_BEFORE_CALLBACK'] ?? '');
	if ($beforeCallback === '')
	{
		$beforeCallback = false;
	}
	$afterCallback = (string)($params['ON_AFTER_CALLBACK'] ?? '');
	if ($afterCallback === '')
	{
		$afterCallback = false;
	}

	$this->stages[] = [
		'STEP_SIZE' => $ss ?: 1,
		'PERCENT' => (int)($params['PERCENT'] ?? 0),
		'CODE' => $params['CODE'],
		'ORDER' => $order,
		'TYPE' => $type,
		'CALLBACK' => $params['CALLBACK'],
		'SUBPERCENT_CALLBACK' => $params['SUBPERCENT_CALLBACK'] ?? null,
		'ON_BEFORE_CALLBACK' => $beforeCallback,
		'ON_AFTER_CALLBACK' => $afterCallback,
	];
	$this->stagesByCode[$params['CODE']] =& $this->stages[count($this->stages) - 1];
}