#ifndef __TEX_CACHE_H
#define __TEX_CACHE_H

#include "include/iosupport.h"

/// A single cache entry...
typedef struct
{
    GSTEXTURE texture;

    // NULL not queued, otherwise queue request record
    void *qr;

    // frame counter the icon was used the last time - oldest get rewritten first in case new icon is requested and cache is full. negative numbers mean
    // slot is free and can be used right now
    int lastUsed;

    int UID;
} cache_entry_t;


/// One texture cache instance
typedef struct
{
    /// User specified ID, not used in any way by the cache code (not even initialized!)
    int userId;

    /// count of entries (copy of the requested cache size upon cache initialization)
    int count;

    /// directory prefix for this cache (if any)
    char *prefix;
    int isPrefixRelative;
    char *suffix;

    int nextUID;

    /// the cache entries itself
    cache_entry_t *content;
} image_cache_t;

/** Initializes the cache subsystem.
 */
void cacheInit();

/** Terminates the cache. Does nothing currently. Users of this code have to destroy caches via cacheDestroyCache
 */
void cacheEnd();

/** Initializes a single cache
 */
image_cache_t *cacheInitCache(int userId, const char *prefix, int isPrefixRelative, const char *suffix, int count);

/** Destroys a given cache (unallocates all memory stored there, disconnects the pixmaps from the usage points).
 */
void cacheDestroyCache(image_cache_t *cache);

GSTEXTURE *cacheGetTexture(image_cache_t *cache, item_list_t *list, int *cacheId, int *UID, char *value);

#endif