#ifndef __ARG_H
#define __ARG_H

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#define ARGT_NONE  0 //nothing
#define ARGT_IP    1 //ip addr
#define ARGT_RANGE 2 //range of values
#define ARGT_FLOAT 3 //could be float
#define ARGT_LIST  4 //list of values
#define ARGT_FILE  5 //path to file
#define ARGT_VAL   6 //command line direct val
#define ARGT_FLAG  7 //flag value on/off

#define ARG_ENTRY(P,T,V,H) {.param=P,.type=ARGT_##T,.def=V,.used=0,.help=H}

/*
used to define table with predefine arguments
*/
typedef struct def_arg
{
	char    *param; //parametr that comes from shell
	uint32_t type;  //type of argument
	void    *def;   //define default values, NULL if no default values
	uint8_t  used;
	char    *help; //command description 
	void    *result; //result
} def_arg;

typedef struct argv_t
{
	int type;
	uint8_t *val; // points to arg_{ip|range|..}
} argv_t;


typedef struct arg_t
{
	int used;
	int size;     //number of arguments
	argv_t **arg; //list of pointers to arguments
} arg_t;

//ip argument default behaviour structure

//resulting structure with ip/port values
typedef struct arg_ip
{
	int used;
	uint32_t ip;  //IP4 ip addrers
	uint16_t port;//port number
} arg_ip;
/*
Supported ip addresses:
...1 = 127.0.0.1:[default port]
:80 = [default ip]:80
*/
typedef struct s_arg_ip
{
	int used; //value is in cmd
	int def; //says if default should be used if no value in cmd
	uint32_t ip;
	uint32_t default_ip;
	uint16_t port;
	uint32_t default_port;
	arg_ip *result;
} s_arg_ip;



//configure range argument behaviour
//configuration structure for range argument
typedef struct arg_range
{
	int used;
	uint32_t start;
	uint32_t end;
	uint32_t step;
} arg_range;
/*
number format decimal ones
1k = 1000
1m = 1000k = 1000000
1g = 1000m = 1000000k = 1000000000
10:100    - from 10 till 100 step [default step]
100:      - from 100 till [default end] [default step]
:200      - from [default start] till 
100:200:1 - from 100 till 200 with step 1
*/
typedef struct s_arg_range
{
	int used;
	int def; //says if default should be used if no value in cmd
	uint32_t start;
	uint32_t default_start; //default start value
	uint32_t end;           //
	uint32_t default_end;   //default end value
	uint32_t step;          //
	uint32_t default_step;  //default step value
	arg_range *result;
} s_arg_range;



//configuration structure for float argument
typedef struct arg_float
{
	int used;
	float val;
} arg_float;

typedef struct s_arg_float
{
	int used;
	int def; //says if default should be used if no value in cmd
	float val;
	float default_val;
	arg_float *result;
} s_arg_float;



//configuration structure for list argument
typedef struct arg_list
{
	int used;
	uint32_t num;
	char **vals;
} arg_list;
/*
list arguments by name

supports
PARAM1|PARAM2|PARAM3
*/
typedef struct s_arg_list
{
	int used;
	int def;                  //says if default should be used if no value in cmd
	uint32_t num;
	char **vals; //list of supported arguments
	char *default_val;        //points to default arguments in da list
	arg_list *result;
} s_arg_list;



/*
configuration structure to default file argument
*/
/*
resulting structure for file argument
*/
typedef struct arg_file
{
	int used;
	char *name;
	char *abspath;
} arg_file;

typedef struct s_arg_file
{
	int used;
	int def; //says if default should be used if no value in cmd
	char *name;            //current filename
	char *default_name;    //default filename
	char *abspath;         //dire where to search stuff?
	char *default_abspath; //default absoulute file path
	arg_file *result;
} s_arg_file;



typedef struct arg_val
{
	int used;
	char *ptr;
} arg_val;

typedef struct s_arg_val
{
	int used;
	int def; //says if default should be used if no value in cmd
	char *ptr;
	char *default_ptr;
	arg_val *result;
} s_arg_val;


//no need as there is no default values
typedef struct arg_flag
{
	int used;
	int flag;
} arg_flag;

typedef struct s_arg_flag
{
	int used;
	int flag; //do we need it?
	arg_flag *result;
} s_arg_flag;



arg_t*     arg_load( int argc, char **argv, def_arg *argl );
void       arg_free( arg_t *arg );
int        arg_type( arg_t *arg, int num );
argv_t*    arg_get( arg_t *arg, int num );
arg_ip*    arg_c_ip( uint32_t ip, uint16_t port );
arg_range* arg_c_range( uint32_t start, uint32_t end, uint32_t step );
arg_float* arg_c_float( float val );
arg_list*  arg_c_list( uint32_t num, char **vals);
arg_file*  arg_c_file( char *name );
arg_val*   arg_c_val( char *ptr );
arg_flag*  arg_c_flag();
void       arg_print( arg_t *arg );

#endif