#include <jansson.h>
#include "json_helpers.h"
#include "game.h"
#include "string.h"
#include "heap.h"

json_t *get_json_object_value(json_t *obj, char *key)
{
  json_t *value = json_object_get(obj, key);
  THROW_ZERO(value, EXC_KEYERROR, "");
  THROW_ZERO(json_is_object(value), EXC_ATTRIBUTEERROR, "");
  return value;
}

bool get_json_boolean_value(json_t *obj, char *key)
{
  json_t *value = json_object_get(obj, key);
  THROW_ZERO(value, EXC_KEYERROR, "");
  THROW_ZERO(json_is_boolean(value), EXC_ATTRIBUTEERROR, "");
  bool i = json_boolean_value(value);
  json_decref(value);
  return i;
}

int get_json_integer_value(json_t *obj, char *key)
{
  json_t *value = json_object_get(obj, key);
  THROW_ZERO(value, EXC_KEYERROR, "");
  THROW_ZERO(json_is_integer(value), EXC_ATTRIBUTEERROR, "");
  int i = json_integer_value(value);
  json_decref(value);
  return i;
}

float get_json_number_value(json_t *obj, char *key)
{
  json_t *value = json_object_get(obj, key);
  float f;
  THROW_ZERO(value, EXC_KEYERROR, "");
  THROW_ZERO(json_is_number(value), EXC_ATTRIBUTEERROR, "");
  f = json_number_value(value);
  json_decref(value);
  return f;
}

string *get_json_string_value(json_t *obj, char *key)
{
  string *s = heap_next_string();
  json_t *value = json_object_get(obj, key);
  THROW_ZERO(value, EXC_KEYERROR, key);
  THROW_ZERO(json_is_string(value), EXC_ATTRIBUTEERROR, key);
  strncpy(s->data, (char *)json_string_value(value), MAX_STRING_LENGTH);
  json_decref(value);
  return s;
}

json_t *get_json_array_value(json_t *obj, char *key)
{
  json_t *value = json_object_get(obj, key);
  THROW_ZERO(value, EXC_KEYERROR, key);
  THROW_ZERO(json_is_array(value), EXC_ATTRIBUTEERROR, key);
  return value;
}

json_t *get_json_array_index_object(json_t *array, int index)
{
  json_t *value = json_array_get(array, index);
  THROW_ZERO(value, EXC_INDEXERROR, "");
  THROW_ZERO(json_is_object(value), EXC_ATTRIBUTEERROR, "");
  return value;
}

int get_json_array_index_integer(json_t *array, int index)
{
  int i;
  json_t *value = json_array_get(array, index);
  THROW_ZERO(value, EXC_INDEXERROR, "");
  THROW_ZERO(json_is_integer(value), EXC_ATTRIBUTEERROR, "");
  i = json_integer_value(value);
  json_decref(value);
  return i;
}