CAllIBlock::CheckFields

function CheckFields(&$arFields, $ID=false)
{
	/** @global CMain $APPLICATION */
	global $APPLICATION;
	$this->LAST_ERROR = "";

	$NAME = $arFields["NAME"] ?? "";
	if(
		($ID===false || array_key_exists("NAME", $arFields))
		&& (string)$NAME === ''
	)
		$this->LAST_ERROR .= GetMessage("IBLOCK_BAD_NAME")."
";

	if($ID===false && !is_set($arFields, "IBLOCK_TYPE_ID"))
		$this->LAST_ERROR .= GetMessage("IBLOCK_BAD_BLOCK_TYPE")."
";

	if($ID===false)
	{
		//For new record take default values
		$WORKFLOW = array_key_exists("WORKFLOW", $arFields)? $arFields["WORKFLOW"]: "Y";
		$BIZPROC  = array_key_exists("BIZPROC",  $arFields)? $arFields["BIZPROC"]:  "N";
	}
	else
	{
		//For existing one read old values
		$arIBlock = CIBlock::GetArrayByID($ID);
		$WORKFLOW = array_key_exists("WORKFLOW", $arFields)? $arFields["WORKFLOW"]: $arIBlock["WORKFLOW"];
		$BIZPROC  = array_key_exists("BIZPROC",  $arFields)? $arFields["BIZPROC"]:  $arIBlock["BIZPROC"];
		if($BIZPROC != "Y") $BIZPROC = "N";//This is cache compatibility issue
	}

	if($WORKFLOW == "Y" && $BIZPROC == "Y")
		$this->LAST_ERROR .= GetMessage("IBLOCK_BAD_WORKFLOW_AND_BIZPROC")."
";

	if(is_set($arFields, "IBLOCK_TYPE_ID"))
	{
		$r = CIBlockType::GetByID($arFields["IBLOCK_TYPE_ID"]);
		if(!$r->Fetch())
			$this->LAST_ERROR .= GetMessage("IBLOCK_BAD_BLOCK_TYPE_ID")."
";
	}

	if(
		isset($arFields["PICTURE"])
		&& is_array($arFields["PICTURE"])
		&& array_key_exists("bucket", $arFields["PICTURE"])
		&& is_object($arFields["PICTURE"]["bucket"])
	)
	{
		//This is trusted image from xml import
	}
	elseif(
		isset($arFields["PICTURE"])
		&& is_array($arFields["PICTURE"])
		&& isset($arFields["PICTURE"]["name"])
	)
	{
		$error = CFile::CheckImageFile($arFields["PICTURE"]);
		if ($error <> '')
			$this->LAST_ERROR .= $error."
";
	}

	if(
		($ID===false && !is_set($arFields, "LID")) ||
		(is_set($arFields, "LID")
		&& (
			(is_array($arFields["LID"]) && count($arFields["LID"])<=0)
			||
			(!is_array($arFields["LID"]) && $arFields["LID"] == '')
			)
		)
	)
	{
		$this->LAST_ERROR .= GetMessage("IBLOCK_BAD_SITE_ID_NA")."
";
	}
	elseif(is_set($arFields, "LID"))
	{
		if(!is_array($arFields["LID"]))
			$arFields["LID"] = Array($arFields["LID"]);

		foreach($arFields["LID"] as $v)
		{
			$r = CSite::GetByID($v);
			if(!$r->Fetch())
				$this->LAST_ERROR .= "'".$v."' - ".GetMessage("IBLOCK_BAD_SITE_ID")."
";
		}
	}

	if (is_set($arFields, "API_CODE"))
	{
		if ($arFields['API_CODE'] == '')
		{
			$arFields['API_CODE'] = false;
		}
		else
		{
			if (!preg_match('/^[a-z][a-z0-9]{0,49}$/i', $arFields['API_CODE']))
			{
				$this->LAST_ERROR .= Loc::getMessage("IBLOCK_FIELD_API_CODE_FORMAT_ERROR").'
';
			}
			else
			{
				// check for uniqueness
				$count = IblockIblockTable::getCount(MainORMQueryQuery::filter()
					->where('API_CODE', $arFields['API_CODE'])
					->whereNot('ID', $ID)
				);

				if ($count > 0)
				{
					$this->LAST_ERROR .= Loc::getMessage("IBLOCK_FIELD_API_CODE_UNIQUE_ERROR").'
';
				}
			}
		}
	}

	if (is_set($arFields, "REST_ON"))
	{
		if ($arFields['REST_ON'] !== 'Y')
		{
			$arFields['REST_ON'] = 'N';
		}
		else
		{
			if (!$arFields['API_CODE'])
			{
				$this->LAST_ERROR .= Loc::getMessage("IBLOCK_BAD_REST_ON_WO_API_CODE").'
';
			}
		}
	}

	$APPLICATION->ResetException();
	if($ID===false)
		$db_events = GetModuleEvents("iblock", "OnBeforeIBlockAdd", true);
	else
	{
		$arFields["ID"] = $ID;
		$db_events = GetModuleEvents("iblock", "OnBeforeIBlockUpdate", true);
	}

	foreach($db_events as  $arEvent)
	{
		$bEventRes = ExecuteModuleEventEx($arEvent, array(&$arFields));
		if($bEventRes===false)
		{
			if($err = $APPLICATION->GetException())
				$this->LAST_ERROR .= $err->GetString()."
";
			else
			{
				$APPLICATION->ThrowException("Unknown error");
				$this->LAST_ERROR .= "Unknown error.
";
			}
			break;
		}
	}

	/****************************** QUOTA ******************************/
	if(empty($this->LAST_ERROR) && (COption::GetOptionInt("main", "disk_space") > 0))
	{
		$quota = new CDiskQuota();
		if(!$quota->checkDiskQuota($arFields))
			$this->LAST_ERROR = $quota->LAST_ERROR;
	}
	/****************************** QUOTA ******************************/

	if($this->LAST_ERROR <> '')
		return false;

	return true;
}