#pragma once
#include <memory>
#include <vector>

// Forward declarations
class INode;
class ILink;
using NodePtr = std::shared_ptr<INode>;
using LinkPtr = std::shared_ptr<ILink>;

class ILink {
public:
    virtual ~ILink() = default;
    virtual NodePtr getNode() const = 0;
    virtual LinkPtr getParent() const = 0;
    virtual void setParent(const LinkPtr& parent) = 0;
    virtual const std::vector<LinkPtr>& getChildren() const = 0;
    virtual void addChild(const LinkPtr& child) = 0;
    virtual void removeChild(const LinkPtr& child) = 0;
};