#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "cJSON.h"
#include <string.h>

typedef struct {
  uint8_t id;
  uint8_t cup_id;
  char* name;
  uint16_t volume;
} ProductLibrary_t;

void app_main() {

  ProductLibrary_t product_libraries[] = {
    {
      .id = 1,
      .cup_id = 1,
      .name = "Thai Tea Medium",
      .volume = 200,
    },
    {
      .id = 2,
      .cup_id = 1,
      .name = "Jasmine Tea Medium",
      .volume = 250,
    }
  };

  cJSON *root = cJSON_CreateObject();

  cJSON *product_libraries_json;
  product_libraries_json = cJSON_AddArrayToObject(root, "product_libraries");

  for (uint8_t i = 0; i < sizeof(product_libraries) / sizeof(ProductLibrary_t); i++){
    cJSON *item_json;
    item_json = cJSON_CreateObject();
    cJSON_AddNumberToObject(item_json, "id", product_libraries[i].id);
    cJSON_AddNumberToObject(item_json, "cup_id", product_libraries[i].cup_id);
    cJSON_AddStringToObject(item_json, "name", product_libraries[i].name);
    cJSON_AddNumberToObject(item_json, "volume", product_libraries[i].volume);
    cJSON_AddItemToArray(product_libraries_json, item_json);
  }

  if (root->child){
    cJSON *p = root->child;

    if(strcmp(p->string, "product_libraries") == 0){

      ProductLibrary_t aaa[2];
      uint8_t count = 0;

      cJSON *current_element = NULL;
      cJSON_ArrayForEach(current_element, p) {

        cJSON *item = current_element->child;

        ProductLibrary_t ii = {
          .id = item->valueint,
          .cup_id = item->next->valueint,
          .name = item->next->next->valuestring,
          .volume = item->next->next->next->valueint,
        };

        aaa[count] = ii;

        count++;
      }

      for (int c = 0; c < 2; c++){
        printf("ID: %d\nCUP ID: %d\nName: %s\nVolume: %d\n\n", 
          aaa[c].id, aaa[c].cup_id,
          aaa[c].name, aaa[c].volume
        );
      }
    }

    if(strcmp(p->string, "id") == 0){
      cJSON_SetNumberValue(p, 888);
    } else if (strcmp(p->string, "cup_id") == 0) {
      cJSON_SetNumberValue(p, 999);
    }
  }

  char *my_json_string = cJSON_Print(root);

  printf("Result: %s\n", my_json_string);
}