#ifndef __OPENGLPLAYGROUND_FONTPROVIDER_HH__
#define __OPENGLPLAYGROUND_FONTPROVIDER_HH__

#include <memory>
#include <unordered_map>
#include <tuple>
#include <string>

#include "common.hh"
#include "Singleton.hh"

using FontProviderKeyType = std::tuple<std::string, unsigned>;

namespace std
{
  template<>
  struct hash<FontProviderKeyType> {
    typedef FontProviderKeyType argument_type;
    typedef std::size_t result_type;
 
    result_type operator()(argument_type const& s) const {
      const result_type h1{std::hash<std::string>()(std::get<0>(s))};
      const result_type h2{std::hash<unsigned>()(std::get<1>(s))};
      return h1 ^ h2;
    }
  };
}

class FontProvider : public Singleton<FontProvider> {
private:
  FontProvider();
  friend class Singleton<FontProvider>;

public:
  TTF_Font *getFont(std::string const& name, unsigned ptsize);

  void cleanup();
  
private:
  std::unordered_map<std::tuple<std::string, unsigned>, TTFFontUPtr> fontCache_;
};
#endif