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<?php
namespace Bitrix\Disk\Bitrix24Disk;
use Bitrix\Main\Type\DateTime;
/**
* Class TreeNode
* @package Bitrix\Disk\Bitrix24Disk
* @internal
*/
final class TreeNode
{
const TREE_SYMLINK_PREFIX = 's';
/** @var int */
public $id;
/** @var string */
public $name;
/** @var int */
public $parentId;
/** @var int */
public $realObjectId;
/**
* The field will be filled only for symbolic links.
*
* @var DateTime
*/
public $createDate;
/**
* @var bool
* @internal
*/
public $__isRoot = false;
/**
* @var bool
* @internal
*/
public $__isReplica = false;
/**
* @var string
* @internal
*/
public $__path;
/**
* @var TreeNode[]
* @internal
*/
public $__tree;
/**
* @var TreeNode
* @internal
*/
public $__link;
/**
* @var array
* @internal
*/
public static $__pathNodes = array();
/**
* TreeNode constructor.
* @param int $id Id of node.
* @param string $name Name of node.
* @param int $parentId Parent id of node.
* @param int $realObjectId Real id of node.
*/
public function __construct($id, $name, $parentId, $realObjectId)
{
$this->id = $id;
$this->name = $name;
$this->parentId = $parentId;
$this->realObjectId = $realObjectId;
}
/**
* Marks node as root. Sets path to '/'.
*
* @return void
*/
public function setAsRoot()
{
$this->__isRoot = true;
$this->__path = '/';
}
/**
* Tells if node is link.
*
* @return bool
*/
public function isLink()
{
return $this->id != $this->realObjectId;
}
/**
* Tells if node is root.
*
* @return bool
*/
private function isRoot()
{
return $this->parentId === null && $this->__isRoot;
}
/**
* Tells if node is replica in this tree.
* It means, that there is the another one node which has the same realObjectId.
*
* @return bool
*/
public function isReplica()
{
return $this->__isReplica;
}
/**
* Marks node as replica.
* It means, that there is the another one node which has the same realObjectId.
*
* @return void
*/
public function markAsReplica()
{
$this->__isReplica = true;
}
/**
* Returns path of object.
* Tries to find path without first link. It may be useful when there are two folder in storage.
* One of them is accessible by symlink another one is accessible by real folder, but under symlink.
* @return null|string
*/
public function getPathWithoutFirstLink()
{
$path = null;
if(!$this->parentId && !$path)
{
return null;
}
if(isset($this->__tree[$this->parentId]))
{
if($this->__tree[$this->parentId]->parentId == $this->id)
{
return null;
}
$path = $this->__tree[$this->parentId]->getPath();
}
if(!$path && isset($this->__tree[self::TREE_SYMLINK_PREFIX . $this->parentId]))
{
$path = $this->__tree[self::TREE_SYMLINK_PREFIX . $this->parentId]->getPath();
}
if($path === null)
{
return null;
}
return $path . $this->name . '/';
}
/**
* Returns path to node.
*
* @return null|string
*/
public function getPath()
{
if(isset($this->__path))
{
return $this->__path;
}
$path = null;
if(isset(self::$__pathNodes[$this->id]))
{
return null;
}
self::$__pathNodes[$this->id] = $this->id;
if($this->__link)
{
$this->__path = $this->__link->getPath();
return $this->__path;
}
if(!$this->parentId && !$path)
{
return null;
}
if(isset($this->__tree[$this->parentId]))
{
if($this->__tree[$this->parentId]->parentId == $this->id)
{
return null;
}
$path = $this->__tree[$this->parentId]->getPath();
}
if(!$path && isset($this->__tree[self::TREE_SYMLINK_PREFIX . $this->parentId]))
{
$path = $this->__tree[self::TREE_SYMLINK_PREFIX . $this->parentId]->getPath();
}
if($path === null)
{
return null;
}
$this->__path = $path . $this->name . '/';
return $this->__path;
}
private function removeLastComponent($path)
{
if($path === '/')
{
return '/';
}
return substr($path, 0, strrpos($path, '/', -2))?: '/';
}
/**
* Sets link on the tree, which contains list of nodes (@see TreeNode).
* The tree is used for building symbolic path (@see TreeNode::getPath()).
*
* @param array $tree
* @return void
*/
public function setTree(array &$tree)
{
$this->__tree = &$tree;
}
/**
* Sets create date. The field will be filled only for symbolic links.
*
* @param DateTime $createDate Create date.
* @return $this
*/
public function setCreateDate($createDate)
{
$this->createDate = $createDate;
return $this;
}
/**
* Sets link on the current node.
*
* @param TreeNode $link
* @return $this
*/
public function setLink(TreeNode $link)
{
$this->__link = $link;
return $this;
}
}