#ifndef RESOURCE_LOADER_H
#define RESOURCE_LOADER_H

#include "resource_pack.h"
#include <memory>

class ResourceLoader {
private:
    static std::unique_ptr<ResourceLoader> instance;
    ResourcePack* resourcePack;
    std::string packPath;
    bool fallbackToFiles;

    ResourceLoader();

public:
    static ResourceLoader& getInstance();
    ~ResourceLoader();
    
    bool initialize(const std::string& packFile, bool enableFallback = true);
    void shutdown();
    
    std::vector<uint8_t> loadResource(const std::string& filename);
    bool resourceExists(const std::string& filename);
    
    void setFallbackToFiles(bool enable) { fallbackToFiles = enable; }
    bool getFallbackToFiles() const { return fallbackToFiles; }
    
    size_t getLoadedResourceCount() const;
    std::vector<std::string> getAvailableResources() const;

private:
    std::vector<uint8_t> loadFromFile(const std::string& filename);
    std::string getDataPath(const std::string& filename);
};

#endif