/*
    This file is part of libcapwap.

    libcapwap is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    libcapwap is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Foobar.  If not, see <http://www.gnu.org/licenses/>.

*/


#ifndef __CFGSTORE_H
#define __CFGSTORE_H


#include <stdint.h>

#include "avltree.h"
#include "bstr.h"

/**
 * Item types supported in item store
 */
typedef enum  {
	CW_ITEMTYPE_NONE = 0,
	CW_ITEMTYPE_BYTE,
	CW_ITEMTYPE_WORD,
	CW_ITEMTYPE_DWORD,
	CW_ITEMTYPE_DATA,
	CW_ITEMTYPE_CONST_DATA,
	CW_ITEMTYPE_STR,
	CW_ITEMTYPE_BSTR,
	CW_ITEMTYPE_BSTR16,
	/** Vendor string contains a Vendor ID, followed by bstr16 data, containing 
	  the string.  */
	CW_ITEMTYPE_VENDORSTR,
	CW_ITEMTYPE_AVLTREE,
	CW_ITEMTYPE_FUN,

} cw_itemtype_t;

struct cw_item {
	uint32_t id;
	uint8_t type;
	union {
		void *data;
		uint8_t byte;
		uint16_t word;
		uint32_t dword;
	};
};
typedef struct cw_item cw_item_t;

typedef struct avltree *cw_itemstore_t;


static inline struct cw_item *cw_itemstore_get(cw_itemstore_t s, uint32_t id)
{
	struct cw_item i;
	i.id = id;
	return avltree_get(s, &i);
}


extern cw_itemstore_t cw_itemstore_create();
extern cw_item_t * cw_itemstore_set_const_ptr(cw_itemstore_t s, uint32_t id, void *ptr);
extern int cw_itemstore_set_strn(cw_itemstore_t s, uint32_t id, const char *str, int n);
extern int cw_itemstore_set_str(cw_itemstore_t s, uint32_t id, const char *str);
extern int cw_itemstore_set_ptr(cw_itemstore_t s, uint32_t id, void *ptr);
extern cw_item_t * cw_itemstore_set_bstrn(cw_itemstore_t s, uint32_t id, uint8_t * data, int len);
extern int cw_itemstore_set_dword(cw_itemstore_t s, uint32_t id, uint32_t dword);
extern int cw_itemstore_set_word(cw_itemstore_t s, uint32_t id, uint32_t word);
extern int cw_itemstore_set_byte(cw_itemstore_t s, uint32_t id, uint8_t byte);
extern int cw_itemstore_set_vendorstr(cw_itemstore_t s, uint32_t id,
				      uint32_t vendor_id, uint8_t * vendorstr, int len);
int cw_itemstore_set_avltree(cw_itemstore_t s, uint32_t id, struct avltree *t);
int cw_itemstore_set_bstr16n(cw_itemstore_t s, uint32_t id, uint8_t * data, int len);


extern int cw_itemstore_set_data(cw_itemstore_t s, uint32_t id, const uint8_t * data,
				 int len);

static inline char *cw_itemstore_get_str(cw_itemstore_t s, uint32_t id)
{
	struct cw_item *i = cw_itemstore_get(s, id);
	if (!i)
		return NULL;
	return i->data;

};

static inline struct avltree *cw_itemstore_get_avltree(cw_itemstore_t s, uint32_t id)
{
	struct cw_item *i = cw_itemstore_get(s, id);
	if (!i)
		return NULL;
	if (i->type != CW_ITEMTYPE_AVLTREE)
		return NULL;
	return i->data;
}


static inline struct avltree *cw_itemstore_get_avltree_c(cw_itemstore_t s, uint32_t id,
							 struct avltree *(creator) ())
{
	struct avltree *avltree = cw_itemstore_get_avltree(s, id);
	if (avltree){
		return avltree;
	}

	avltree = creator();
	if (!avltree)
		return NULL;
	cw_itemstore_set_avltree(s, id, avltree);
	return avltree;
}



extern void *cw_item_get_data_ptr(struct cw_item *item);
extern void cw_item_release_data_ptr(struct cw_item *item, void *data);


int cw_itemstore_set_fun(cw_itemstore_t s, uint32_t id,
			 void *(*funget) (void *arg),
			 void (*funfree) (void *arg, void *data), void *arg);

int cw_itemstore_set(cw_itemstore_t itemstore, uint32_t item_id, int item_type,
		     uint8_t * data, int len);

struct cw_item *cw_item_create(cw_itemstore_t s, uint32_t id);



#endif