#ifndef LIBADWAITAMM_HELPERS_GOBJ_MIXIN_HPP
#define LIBADWAITAMM_HELPERS_GOBJ_MIXIN_HPP

#include <glibmm/object.h>

#include <type_traits>

namespace Adwaita::helpers
{

  template<typename SourceType, typename TargetType>
  struct copy_const
  {
    using type = TargetType;
  };

  template<typename SourceType, typename TargetType>
  struct copy_const<SourceType const, TargetType>
  {
    using type = std::add_const_t<TargetType>;
  };

  template<typename SourceType, typename TargetType>
  using copy_const_t = typename copy_const<SourceType, TargetType>::type;

  template<typename CppType, typename BaseType>
  struct gobj_mixin
  {
    template<typename Self>
    auto gobj(this Self && self) noexcept
    {
      using base_type = copy_const_t<std::remove_reference_t<Self>, BaseType>;
      return reinterpret_cast<base_type *>(self.::Glib::Object::gobj());
    }

    template<typename Self>
    auto gobj_copy(this Self && self) noexcept
    {
      return reinterpret_cast<BaseType *>(self.::Glib::Object::gobj_copy());
    }
  };

}  // namespace Adwaita::helpers

#endif