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#ifndef CHECKIN_JSON_H
#define CHECKIN_JSON_H 1
#if ENABLE_JSONC
# include <json-c/json.h>
#endif
#include "jsmn.h"
//https://www.ibm.com/support/knowledgecenter/en/SS9H2Y_7.6.0/com.ibm.dp.doc/json_parserlimits.html
#define JSON_NAME_LEN 256
#define JSON_FULLNAME_LEN 1024
typedef enum {
JSON_OBJECT = 0,
JSON_ARRAY = 1,
JSON_STRING = 2,
JSON_NUMBER = 3,
JSON_BOOLEAN = 4,
JSON_NULL = 5,
} JSON_ENTRY_TYPE;
typedef struct json_entry {
JSON_ENTRY_TYPE type;
char name[JSON_NAME_LEN + 1];
char fullname[JSON_FULLNAME_LEN + 1];
union {
char *string; // type == JSON_STRING
long double number; // type == JSON_NUMBER
int boolean; // type == JSON_BOOLEAN
size_t items; // type == JSON_ARRAY
} data;
size_t pos; // the position of this item in its parent
char *original_string;
void *callback_data;
int (*callback_function)(struct json_entry *);
} JSON_ENTRY;
// ----------------------------------------------------------------------------
// public functions
#define JSON_OK 0
#define JSON_CANNOT_DOWNLOAD 1
#define JSON_CANNOT_PARSE 2
int json_parse(char *js, void *callback_data, int (*callback_function)(JSON_ENTRY *));
// ----------------------------------------------------------------------------
// private functions
#ifdef ENABLE_JSONC
json_object *json_tokenise(char *js);
size_t json_walk(json_object *t, void *callback_data, int (*callback_function)(struct json_entry *));
#else
jsmntok_t *json_tokenise(char *js, size_t len, size_t *count);
size_t json_walk_tree(char *js, jsmntok_t *t, void *callback_data, int (*callback_function)(struct json_entry *));
#endif
size_t json_walk_object(char *js, jsmntok_t *t, size_t nest, size_t start, JSON_ENTRY *e);
size_t json_walk_array(char *js, jsmntok_t *t, size_t nest, size_t start, JSON_ENTRY *e);
size_t json_walk_string(char *js, jsmntok_t *t, size_t start, JSON_ENTRY *e);
size_t json_walk_primitive(char *js, jsmntok_t *t, size_t start, JSON_ENTRY *e);
int json_callback_print(JSON_ENTRY *e);
#endif
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