#ifndef CLI_H
#define CLI_H

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

enum cli_code {
	CLI_EXIT_SUCCESS = -1,
	CLI_SUCCESS = 0,
	CLI_ERROR = 1
};

typedef int (*t_option_handler)(const char *arg, void *config);
typedef const char *(*t_arg_type_to_str)(int type);

struct option_descriptor
{
	char short_opt;
	const char *long_opt;
	int has_arg;
	t_option_handler handler;
	int arg_type;
	const char *description;
};

/* Default arg types — clients may define their own */
#define CLI_OPT_ARG_TYPES \
	X(OPT_ARG_NONE,   ""     ) \
	X(OPT_ARG_INT,    "<NUM>") \
	X(OPT_ARG_UINT,   "<NUM>") \
	X(OPT_ARG_FLOAT,  "<NUM>") \
	X(OPT_ARG_STRING, "<STR>")

#define X(name, str) name,
enum { CLI_OPT_ARG_TYPES };
#undef X

void cli_set_prog_name(const char *name);
void cli_print_options(const struct option_descriptor *opts, size_t nb_opts,
	t_arg_type_to_str to_str);

const char *cli_arg_type_to_str(int type);

enum cli_code cli_parse(int argc, char **argv, void *config,
	const struct option_descriptor *opts, size_t nb_opts,
	char *opt_str, struct option *long_opts);

#endif