#ifndef HEADER_VARIANT_HPP
#define HEADER_VARIANT_HPP

#include <vanetza/geonet/serialization.hpp>
#include <vanetza/geonet/beacon_header.hpp>
#include <vanetza/geonet/gbc_header.hpp>
#include <vanetza/geonet/shb_header.hpp>
#include <vanetza/geonet/tsb_header.hpp>
#include <boost/variant/variant.hpp>

namespace vanetza
{
namespace geonet
{

typedef boost::variant<BeaconHeader, GeoBroadcastHeader, ShbHeader, TsbHeader> HeaderVariant;
typedef boost::variant<BeaconHeader&, GeoBroadcastHeader&, ShbHeader&, TsbHeader&> HeaderRefVariant;
typedef boost::variant<const BeaconHeader&, const GeoBroadcastHeader&, const ShbHeader&, const TsbHeader&> HeaderConstRefVariant;

/** \brief get the length of the underlying header type
 *
 * \param header the header to get the length from
 * \return std::size_t
 *
 */
std::size_t get_length(const HeaderVariant& header);
std::size_t get_length(const HeaderRefVariant& header);
std::size_t get_length(const HeaderConstRefVariant& header);

} // namespace geonet
} // namespace vanetza

namespace boost
{

/** \brief serialize the underlying header type to an OutputArchive
 *
 * \param header the header to serialize
 * \param ar the archive to write to
 *
 */
void serialize(const vanetza::geonet::HeaderVariant& header, vanetza::OutputArchive& ar);
void serialize(const vanetza::geonet::HeaderRefVariant& header, vanetza::OutputArchive& ar);
void serialize(const vanetza::geonet::HeaderConstRefVariant& header, vanetza::OutputArchive& ar);

} // namespace boost

#endif // HEADER_VARIANT_HPP