#ifndef CIRCE_CORE_PACKET_H
#define CIRCE_CORE_PACKET_H

#define CIRCE_MTU 1280
#define CIRCE_MAX_UDP_PAYLOAD 1472

#include "peer_table.h"
#include <stddef.h>
#include <stdint.h>

enum circe_packet_type
{
  // Some packets need to be splintered because of UDP MTU

  CIRCE_PACKET_OPENTUNNEL = 0x0,
  CIRCE_PACKET_ACKOPEN1,
  CIRCE_PACKET_ACKOPEN2,
  CIRCE_PACKET_ACKOPEN3,
  CIRCE_PACKET_IDENTIFY1,
  CIRCE_PACKET_IDENTIFY2,
  CIRCE_PACKET_DATA,
  CIRCE_PACKET_HEARTBEAT,
  CIRCE_PACKET_CLOSETUNNEL1,
  CIRCE_PACKET_CLOSETUNNEL2,
  CIRCE_PACKET_ROUTE_CHALLENGE1,
  CIRCE_PACKET_ROUTE_CHALLENGE2,
};

enum circe_packet_field
{
  CIRCE_PACKET_FIELD_VERSION = 0x0,
  CIRCE_PACKET_FIELD_IDENTITY,
  CIRCE_PACKET_FIELD_TYPE,
  CIRCE_PACKET_FIELD_ECDH_FRAGMENT,
  CIRCE_PACKET_FIELD_MLKEM_PUBKEY,
  CIRCE_PACKET_FIELD_MLKEM_ENCAPSULATED,
  CIRCE_PACKET_FIELD_SEQ_NUMBER,
  CIRCE_PACKET_FIELD_DATA_PAYLOAD,
  CIRCE_PACKET_FIELD_ID_PAYLOAD1,
  CIRCE_PACKET_FIELD_ID_PAYLOAD2,
  CIRCE_PACKET_FIELD_OVERMAX,
};

struct circe_outgoing_packet
{
  struct circe_location destination;
  uint8_t buffer[CIRCE_MAX_UDP_PAYLOAD];
  size_t length;
};

#endif