//
// Created by Neirokan on 09.05.2020
//

#ifndef ENGINE_RESOURCEMANAGER_H
#define ENGINE_RESOURCEMANAGER_H

#include <SFML/Graphics.hpp>
#include <SFML/Audio.hpp>
#include <memory>
#include "Mesh.h"

class ResourceManager final {
private:
    std::map<std::string, std::shared_ptr<sf::Texture>> _textures;
    std::map<std::string, std::shared_ptr<sf::Font>> _fonts;
    std::map<std::string, std::shared_ptr<sf::SoundBuffer>> _soundBuffers;
    std::map<std::string, std::vector<std::shared_ptr<Mesh>>> _objects;

    static ResourceManager* _instance;

    ResourceManager() = default;
public:
    ResourceManager(const ResourceManager&) = delete;
    ResourceManager& operator=(ResourceManager&) = delete;

    // Unloads all currently loaded textures.
    static void unloadObjects();
    static void unloadTextures();
    static void unloadSoundBuffers();
    static void unloadFonts();

    static void unloadAllResources();

    static void init();
    static void free();

    // Try to load texture from file.
    // If success returns pointer to texture.
    // Otherwise returns nullptr.
    static std::vector<std::shared_ptr<Mesh>> loadObjects(const std::string& filename, const Vec3D& scale = Vec3D{1, 1, 1});
    static std::shared_ptr<sf::Texture> loadTexture(const std::string& filename);
    static std::shared_ptr<sf::Font> loadFont(const std::string& filename);
    static std::shared_ptr<sf::SoundBuffer> loadSoundBuffer(const std::string& filename);
};

#endif //PSEUDO3DENGINE_RESOURCEMANAGER_H