#ifndef _PACKET_HELPERS_H
#define _PACKET_HELPERS_H

#ifdef __cpluscplus
extern "C"
{
#endif

#include "packet.h"

struct metadata
{
    // TODO
};

// metadata
struct metadata *metadata_dup(const struct metadata *metadata);
void metadata_free(struct metadata *metadata);
void packet_set0_metadata(struct packet *pkt, const struct metadata *metadata);
const struct metadata *packet_get0_metadata(const struct packet *pkt);

// packet
struct packet *packet_dup(const struct packet *pkt);
void packet_free(struct packet *pkt);

uint64_t packet_get_zone_id(const struct packet *pkt);
uint16_t packet_get_raw_len(const struct packet *pkt);
const char *packet_get0_raw_data(const struct packet *pkt);

bool paket_is_fragment(const struct packet *pkt);
bool packet_has_tcp(const struct packet *pkt);
bool packet_has_udp(const struct packet *pkt);

// foreach layer
uint8_t packet_get_layer_count(const struct packet *pkt);
enum layer_type packet_get_layer_type(const struct packet *pkt, uint8_t index);
const char *packet_get_layer_hdr_ptr(const struct packet *pkt, uint8_t index);
const char *packet_get_layer_pld_ptr(const struct packet *pkt, uint8_t index);
uint16_t packet_get_layer_hdr_len(const struct packet *pkt, uint8_t index);
uint16_t packet_get_layer_pld_len(const struct packet *pkt, uint8_t index);

// get tcp layer
const struct layer_record *packet_get0_tcp_layer(const struct packet *pkt);
const char *packet_get_tcp_hdr_ptr(const struct packet *pkt);
const char *packet_get_tcp_pld_ptr(const struct packet *pkt);
uint16_t packet_get_tcp_hdr_len(const struct packet *pkt);
uint16_t packet_get_tcp_pld_len(const struct packet *pkt);
uint16_t packet_get_tcp_sport(const struct packet *pkt);
uint16_t packet_get_tcp_dport(const struct packet *pkt);
uint32_t packet_get_tcp_seq(const struct packet *pkt);
uint32_t packet_get_tcp_ack(const struct packet *pkt);
uint8_t packet_get_tcp_flags(const struct packet *pkt);
bool packet_has_tcp_flag_urg(const struct packet *pkt);
bool packet_has_tcp_flag_ack(const struct packet *pkt);
bool packet_has_tcp_flag_psh(const struct packet *pkt);
bool packet_has_tcp_flag_rst(const struct packet *pkt);
bool packet_has_tcp_flag_syn(const struct packet *pkt);
bool packet_has_tcp_flag_fin(const struct packet *pkt);

// get inner udp layer
const struct layer_record *packet_get0_inner_udp_layer(const struct packet *pkt);
const char *packet_get_inner_udp_hdr_ptr(const struct packet *pkt);
const char *packet_get_inner_udp_pld_ptr(const struct packet *pkt);
uint16_t packet_get_inner_udp_hdr_len(const struct packet *pkt);
uint16_t packet_get_inner_udp_pld_len(const struct packet *pkt);
uint16_t packet_get_inner_udp_sport(const struct packet *pkt);
uint16_t packet_get_inner_udp_dport(const struct packet *pkt);

// get outer udp layer
const struct layer_record *packet_get0_outer_udp_layer(const struct packet *pkt);
const char *packet_get_outer_udp_hdr_ptr(const struct packet *pkt);
const char *packet_get_outer_udp_pld_ptr(const struct packet *pkt);
uint16_t packet_get_outer_udp_hdr_len(const struct packet *pkt);
uint16_t packet_get_outer_udp_pld_len(const struct packet *pkt);
uint16_t packet_get_outer_udp_sport(const struct packet *pkt);
uint16_t packet_get_outer_udp_dport(const struct packet *pkt);

#ifdef __cpluscplus
}
#endif

#endif