#include <mutex>

#include "FontProvider.hh"

template<>
std::unique_ptr<FontProvider> Singleton<FontProvider>::instance{nullptr};
template<>
std::once_flag Singleton<FontProvider>::instance_flag{};

FontProvider::FontProvider()
{
}

TTF_Font *FontProvider::getFont(std::string const& name, unsigned ptsize)
{
  auto key = make_tuple(name, ptsize);
  auto it = fontCache_.find(key);
  
  if (it == fontCache_.end()) {
    TTFFontUPtr font{TTF_OpenFont(name.c_str(), ptsize)};
    if (!font)
      throw TTFException{};
    std::tie(it, std::ignore) = fontCache_.insert(make_pair(key, std::move(font)));
  } 

  return it->second.get();
}

void FontProvider::cleanup()
{
  fontCache_.clear();
}