#ifndef TREE_H
#define TREE_H

#include "Object.h"

namespace Kylin {

template <typename T>

class TreeNode {
public:
    TreeNode(const T &value, TreeNode<T> *parent) : value(value), parent(parent) {}
    T value;
    TreeNode<T> *parent = nullptr;
    virtual ~TreeNode() {}
};

template <typename T>
class Tree : public Object {
public:
    virtual bool insert(TreeNode<T> *node) = 0;
    virtual TreeNode<T> *find(const T &value) const = 0;
    virtual bool find(TreeNode<T> *node) const = 0;
    virtual TreeNode<T> *root() const = 0;
    virtual int degree() const = 0;
    virtual int count() const = 0;
    virtual int height() const = 0;
    virtual void clear() = 0;

protected:
    TreeNode<T> *m_root = nullptr;
};

} // namespace Kylin

#endif // TREE_H