/**
* Check if there is enough disk free space.
* Return message on error
*
* @return string
*/
protected function checkDiskFreeSpace()
{
$message = null;
$totalSize = \Includes\Utils\ArrayManager::sumObjectsArrayFieldValues($this->getEntries(), 'getPackSize');
$freeSpaceRaw = \Includes\Utils\FileManager::getDiskFreeSpace(LC_DIR_TMP);
$freeSpace = null !== $freeSpaceRaw ? max(0, $freeSpaceRaw - self::FREE_SPACE_RESERVE) : null;
if (null !== $freeSpace && $totalSize > $freeSpace) {
$message = \XLite\Core\Translation::getInstance()->translate('Not enough disk space. Required: {{req}} (+{{reserve}} reserve). Available: {{avail}}', array('req' => \XLite\Core\Converter::formatFileSize($totalSize), 'reserve' => \XLite\Core\Converter::formatFileSize(self::FREE_SPACE_RESERVE), 'avail' => \XLite\Core\Converter::formatFileSize($freeSpace)));
}
return $message;
}
