/******************************************************************/
/* This file is part of the homework assignments for CSCI-427/527 */
/* at The College of William & Mary and authored by Pieter Peers. */
/* No part of this file, whether altered or in original form, can */
/* be distributed or used outside the context of CSCI-427/527     */
/* without consent of either the College of William & Mary or     */
/* Pieter Peers.                                                  */
/******************************************************************/
#ifndef _SCENEIO_CACHE_H_
#define _SCENEIO_CACHE_H_

#include <map>
#include <memory>
#include <string>
#include <vector>

template<typename T>
class nodeCache {
 public:
  //////////////////
  // Constructors //
  //////////////////
  nodeCache(void) {}
  nodeCache(const nodeCache<T>&) = delete;

  ///////////////
  // Operators //
  ///////////////
  nodeCache& operator=(const nodeCache& ) = delete;

  /////////////
  // Methods //
  /////////////
  std::shared_ptr<T> get(const std::string& name) const;
  bool add(const std::string& name, const std::shared_ptr<T>& node);

  std::vector<std::shared_ptr<T>> unusedNodes(unsigned int maxCount=1) const;
  std::vector<std::shared_ptr<T>> allNodes(void) const;

 private:
  //////////////////////////
  // Private Data Members //
  //////////////////////////
  std::map<std::string, std::shared_ptr<T>> _cache;
};

////////////////////
// Inline Methods //
////////////////////
#include "sceneIO_cache.inline.h"

#endif /* _SCENEIO_CACHE_H_ */