#pragma once

#include "eth.h"
#include "ip4.h"
#include "udp4.h"
#include "dhcp4.h"

namespace packet {
  struct packet {
    eth::header const * eth;
    ip4::header const * ip4;
    udp4::header const * udp4;
    dhcp4::message const * dhcp4;
  };

  void parse(uint8_t const * buf, int length, packet * p);

  const int eth_offset = 0;
  const int ip4_offset = (sizeof (eth::header));
  const int udp4_offset = (sizeof (eth::header)) + (sizeof (ip4::header));
  const int dhcp4_offset = (sizeof (eth::header)) + (sizeof (ip4::header)) + (sizeof (udp4::header));

  int make(uint8_t * buf,
           uint8_t op,
           uint8_t const * eth_source_address,
           uint8_t const * eth_destination_address,
           uint8_t const * eth_client_address,
           uint32_t const ip4_source_address,
           uint32_t const ip4_destination_address,
           uint16_t const udp4_source_port,
           uint16_t const udp4_destination_port,
           uint32_t const dhcp_transaction_id,
           uint32_t const dhcp_message_type,
           dhcp4::message_parameters const * params);
};