#pragma once

#include "netinet/in.h"
#include "netinet/ip_icmp.h"
#include <help.h>
#include <opt_parse.h>

#include <bits/types/struct_timeval.h>
#include <stdbool.h>
#include <stdint.h>
#include <sys/socket.h>
#include <sys/types.h>

extern char	  *exec_name;
extern int	   tx_count;
extern int	   rx_count;
extern char	  *address;
extern double *times;
extern int	   sock;
extern char	 **hosts;
extern bool	   verbose;

typedef struct {
	uint32_t count;
	uint16_t size;
	uint16_t timeout;
	uint16_t linger;
	uint16_t interval;
} options_t;

typedef struct {
	struct icmphdr hdr;
	char		  *msg;
} icmp_pckt_t;

#define MAX_WAIT_TIME 5

#define DEFAULT_VERBOSE false

#define DEFAULT_SIZE 56
#define DEFAULT_INTERVAL 1
#define DEFAULT_TIMEOUT -1
#define DEFAULT_COUNT -1
#define DEFAULT_LINGER 10

int	 send_ping(int socket, struct sockaddr_in *dest, options_t opt);
int	 init_socket(options_t opt);
void init_packet(char *buf, int seq, uint32_t size);

int	 send_icmp(int socket, char *buf, struct sockaddr_in *addr, uint32_t size);
int	 receive_icmp(int socket, char *buf, uint32_t size,
				  struct sockaddr_in *addr);
void process_icmp(char *buf, int bytes, struct sockaddr_in *addr, int seq,
				  struct timeval *tv_start, struct timeval *tv_end);
int	 ping(args_t *args);

// Internal
unsigned short get_checksum(unsigned short *addr, int count);