Controller::processActionStartUpload

protected function processActionStartUpload()
{
	$this->checkRequiredPostParams(array('fileId', 'service'));

	if($this->errorCollection->hasErrors())
	{
		$this->sendJsonErrorResponse();
	}

	$documentHandlersManager = Driver::getInstance()->getDocumentHandlersManager();
	$documentHandler = $documentHandlersManager->getHandlerByCode($this->request->getPost('service'));
	if(!$documentHandler)
	{
		$this->errorCollection->add($documentHandlersManager->getErrors());
		$this->sendJsonErrorResponse();
	}
	if(!$documentHandler->checkAccessibleTokenService())
	{
		$this->errorCollection->add(array(new Error(Loc::getMessage('DISK_UF_CONTROLLER_ERROR_COULD_NOT_WORK_WITH_TOKEN_SERVICE_B24', array('#NAME#' => $documentHandler::getName())), self::ERROR_COULD_NOT_WORK_WITH_TOKEN_SERVICE)));
		$this->errorCollection->add($documentHandler->getErrors());
		$this->sendJsonErrorResponse();
	}

	if(!$documentHandler->queryAccessToken()->hasAccessToken() || $documentHandler->isRequiredAuthorization())
	{
		$this->sendNeedAuth($documentHandler->getUrlForAuthorizeInTokenService('opener'));
	}

	$importManager = new CloudImportImportManager($documentHandler);
	$cloudImportEntry = $importManager->startImport($this->request->getPost('fileId'));
	if(!$cloudImportEntry)
	{
		$this->errorCollection->add($importManager->getErrors());
		$this->sendJsonErrorResponse();
	}

	$this->sendJsonSuccessResponse(array(
		'cloudImport' => array(
			'id' => $cloudImportEntry->getId(),
		),
	));
}