uid.hpp

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#pragma once
 
#include <format>
#include <toast/export.hpp>
 
namespace assets {
class Prefab;
}
 
namespace toast {
 
struct TOAST_API UID {
  friend class Engine;
  friend class INodeOwner;
  friend class assets::Prefab;
 
  UID();
 
  UID(uint64_t val) : value(val) { }

  operator std::string() const noexcept;
  auto operator<=>(const UID& other) const noexcept -> std::strong_ordering;
  auto operator==(const UID& other) const noexcept -> bool;

  [[nodiscard]]
  auto get() const noexcept -> std::string;

  [[nodiscard]]
  auto data() const noexcept -> uint64_t;

  static auto toString(uint64_t uid) -> std::string;

  static auto fromString(std::string_view b64) -> uint64_t;

  static auto make() -> UID;
 
private:
  void generate();    
  void assign(
      std::string_view b64
  );                  
  uint64_t value;
};
 
}

template<>
struct std::formatter<toast::UID> : std::formatter<std::string> {
  auto format(const toast::UID& uid, std::format_context& ctx) const {
    return std::formatter<std::string>::format(uid.get(), ctx);
  }
};