#ifndef _JSON_PACKET_H_INCLUDED_
#define _JSON_PACKET_H_INCLUDED_
#include <stdint.h>
#include "cJSON.h"
#include "iobuffer.h"

/**
 * inout: a input/output arguments, if return NO_REPLY the output is ignored.
 */

/*
 * simple json function packet
 * 简单的json pack
 */

typedef struct{
    uint16_t    cap; /*capacity*/
    char       *buf;
    char       *pos;
}json_simple;

json_simple json_simple_init(char *pos, uint16_t cap);

/*
** return NG or OK
**/
uint32_t json_simple_add_int(json_simple *json, char *key, int32_t val);
uint32_t json_simple_add_str(json_simple *json, char *key, char *val);

/*json_simple_tostring
** no need to free
**/
const char  *json_simple_tostring(json_simple *json);
const uint32_t json_simple_len(json_simple *json);
/*  
   使用例子
   char buf[256];
   json_simple json = json_simple_init(buf, sizeof(buf));
   json_simple_add_int(&json, "cmd", 0x11);
   json_simple_add_str(&json, "uuid", "my_uuid");
   char *str = json_simple_tostring(&json);
**/

/*
 * Json function packet
 */
typedef struct{
    uint16_t   cmd; //value of cmd_sign, max 65535
    int16_t    ret; ///NO_REPLY this packet will not be sent back.
    cJSON 	  *json;
}json_pkt;

uint8_t json_pkt_parse(json_pkt *packet, const char *str, const char *cmd_sign); //func according to funcMark.
#define json_pkt_deinit json_pkt_reset//also deinit, make the mjson, func NULL and mPacketBuffer.size = 0
void json_pkt_reset(json_pkt *packet); //also deinit, make the mjson, func NULL and mPacketBuffer.size = 0
void json_pkt_setcmd(json_pkt *packet, const uint16_t cmd);								   //str will be strdup
//the following functions will act to mJson
void json_pkt_add_int(json_pkt *packet, const char *key, const int val);
void json_pkt_add_str(json_pkt *packet, const char *key, const char *val);
void json_pkt_add_item(json_pkt *packet, const char *key, cJSON *val);
void json_pkt_add_item_int(json_pkt *packet, const char *item, const char *key, const int val);
void json_pkt_add_item_str(json_pkt *packet, const char *item, const char *key, const char *val);
void json_pkt_remove(json_pkt *packet, const char *key);
cJSON *json_pkt_detach(json_pkt *packet, const char *key);

cJSON *json_pkt_get_item(json_pkt *packet, const char *key);
const char *json_pkt_get_string(json_pkt *packet, const char *key, const char *defaultVal);
int 	json_pkt_get_int(json_pkt *packet, const char *key, const   int defaultVal);
uint8_t	json_pkt_get_bool(json_pkt *packet, const char *key,const   uint8_t defaultVal);
float	json_pkt_get_float(json_pkt *packet, const char *key, const double defaultVal);

int 	json_pkt_get_item_int(json_pkt *packet, cJSON * obj, const char *key, const int defaultVal);
int 	json_pkt_get_intArray(json_pkt *packet, const char *key, int *array, const int size);

//convert current mJson object to string and append to mPacketBuffer, and do not call twice. free it.
char* json_pkt_toJson_string(json_pkt *packet);
#endif