#include <stddef.h>
#include <stdio.h>
#include <getopt.h>

#include "cli.h"
#include "cli_opt.h"
#include "ft_ping.h"

/* Forward declarations */
static const char * option_arg_type_to_str(t_option_arg_type type);
/* -------------------- */

int
cli_handle_help(const char *arg, t_ping_config *config)
{
	(void)config;
	(void)arg;

	printf("ft_ping - Send ICMP ECHO_REQUEST to network hosts\n");
	printf("Usage: ft_ping [options] <destination>\n\n");
	printf("Options:\n");

	for (size_t i = 0; i < CLI_OPT_LEN; ++i)
	{
		const t_option_descriptor *opt = &g_options[i];
		const char *argstr = option_arg_type_to_str(opt->arg_type);

		printf("  -%c, --%-10s %-8s %s\n",
				opt->short_opt,
				opt->long_opt,
				argstr[0] ? argstr : "",
				opt->description
			);
	}
	return CLI_EXIT_SUCCESS;
}

static const char *
option_arg_type_to_str(t_option_arg_type type)
{
	switch (type)
	{
		case OPT_ARG_NONE:		return "";
		case OPT_ARG_INT:		return "<NUM>";
		case OPT_ARG_UINT:		return "<NUM>";
		case OPT_ARG_SECONDS:	return "<SEC>";
		case OPT_ARG_BYTES:		return "<SIZE>";
		case OPT_ARG_TTL:		return "<TTL>";
		case OPT_ARG_STRING:	return "<STR>";
		default:				return "<ARG>";
	}
}