#include <SDL2/SDL_image.h>

#include "ImageProvider.hh"

template<>
std::unique_ptr<ImageProvider> Singleton<ImageProvider>::instance{nullptr};

template<>
std::once_flag Singleton<ImageProvider>::instance_flag{};

ImageProvider::ImageProvider()
{
}

SDL_Surface *ImageProvider::getImage(std::string const& name)
{
  auto it = imageCache_.find(name);

  if(it == imageCache_.end()) {
    SDLSurfaceUPtr image{IMG_Load(name.c_str())};
    if (!image)
      throw SDLException{};
    tie(it, std::ignore) = imageCache_.insert(make_pair(name, std::move(image)));
  }

  return it->second.get();
}


void ImageProvider::cleanup()
{
  imageCache_.clear();
}