#ifndef RESOURCE_H
#define RESOURCE_H
#include "IdIndex.h"

/*
This file defines the Resource "framework" - a system that consists of:
  ResourceManager
    - loading of Data such as sprites, animations, sounds, etc.
    - holds an ID reference Table of names to IDs.
      - efficient data usage, as each resource is only loaded once by name
      - efficient computation, as resources are referred to via int after queried with name
*/

struct ResourcesManager {
  struct IdIndex *index;
  struct Resources *resources;
};
struct ResourcesManager *newResourceManager();

#define UNHANDLED 0
#define SPRITE 1
#define ANIMATION 2
struct Resources {
  int id; // id, usually to represent type of data stored (SPRITE, etc.)
  struct IdIndex index;
  int length; // size, in terms of elements, of *data ptr array
  void **data; // void pointer to target data
  void *(*loadResource_func)(char *filename); // user-specified function for loading the Resource. Returns void pointer to their data.
  int (*freeResource_func)(void *data);
};
// TODO: change name to const
struct Resources *newResources(int id, int length);
int freeResources(struct Resources *resources);
int addResource(struct Resources *res, char *name, void *data);
void *getResource(struct Resources *res, char *name);
void *getResourceById(struct Resources *res, int id);
int getResourceId(struct Resources *res, char *name);

int loadResource(struct Resources *res, char *filename);
int freeResource(struct Resources *res, char *name);
int freeResourceById(struct Resources *res, int id);

#endif