#ifndef FT_PING_H
# define FT_PING_H

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/time.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#include <byteswap.h>
#include <ctype.h>
#include <stdlib.h>
#include <errno.h>

#include <fcntl.h>

#define PACKET_DATA_LENGTH 40

#define HELP_MESSAGE " [OPTION...] HOST ...\n\
Send ICMP ECHO_REQUEST packets to network hosts.\n\
\n\
  -c, --count=NUMBER         stop after sending NUMBER packets\n\
  -n, --numeric              do not resolve host addresses\n\
      --ttl=N                specify N as time-to-live\n\
  -w, --timeout=N            stop after N seconds\n\
\n\
  -f, --flood                flood ping (root only)\n\
  -?, --help                 give this help list\n"

typedef struct s_waitlist
{
	struct timeval		time;
	uint16_t			seq;
	struct s_waitlist	*next;
}	t_waitlist;

typedef struct s_host_list
{
	char *host;
	struct s_host_list *next;
}	t_host_list;

typedef struct s_settings
{
	t_host_list	*hosts;
	int			count;	// -c (--count)
	int			timeout; // -w (--timeout)
	double		interval; //-i (--interval)
	int			linger; //-W (--linger)
	int			ttl;	// --ttl
	short		setTtl; // is ttl set
	
	int			socket;
	uint16_t	id;
	short		stop;
	short		err;
	
}	t_settings;


typedef struct s_icmp_echo
{
	uint8_t			type;
	uint8_t			code;
	uint16_t		checksum;
	uint16_t		identifier; 
	uint16_t		sequence; 
	struct timeval	time; 
	uint8_t			data[40];
}	t_icmp_echo;

t_icmp_echo prepare_icmp_echo(uint16_t sequence, uint16_t identifier);
int add_host(t_settings *res, char *host);
void free_hosts(t_host_list *list);
t_settings parse_args(int argc, char **argv);
void show_help(t_settings *set, char *name);
void send_pings(t_settings *set);

#endif