#include "settings.h"

cJSON *decode_hosts(const char *input) {
  if (!input) return NULL;

  cJSON *root = cJSON_CreateObject();
  if (!root) return NULL;

  char *input_copy = strdup(input);
  if (!input_copy) {
    cJSON_Delete(root);
    return NULL;
  }

  char *save_ptr_line;
  char *line = strtok_r(input_copy, "\n", &save_ptr_line);

  while (line) {
    // Пропускаем пустые строки и комментарии
    if (strlen(line) == 0 || line[0] == '#') {
      line = strtok_r(NULL, "\n", &save_ptr_line);
      continue;
    }

    // Разбиваем строку на поля
    char *fields[1024];
    int field_count = 0;

    char *save_ptr_field;
    char *token = strtok_r(line, " \t", &save_ptr_field);

    while (token && field_count < 1024) {
      fields[field_count++] = token;
      token = strtok_r(NULL, " \t", &save_ptr_field);
    }

    if (field_count > 0) {
      char *key = fields[0];

      if (field_count == 1) {
        cJSON_AddItemToObject(root, key, cJSON_CreateArray());
      } else if (field_count == 2) {
        cJSON_AddStringToObject(root, key, fields[1]);
      } else {
        cJSON *arr = cJSON_CreateArray();
        for (int i = 1; i < field_count; i++) {
          cJSON_AddItemToArray(arr, cJSON_CreateString(fields[i]));
        }
        cJSON_AddItemToObject(root, key, arr);
      }
    }

    line = strtok_r(NULL, "\n", &save_ptr_line);
  }

  free(input_copy);
  return root;
}