// Determine if it is a JSON string
export function isJSON(str: string) {
  if (typeof str === 'string') {
    try {
      const data = JSON.parse(str);
      if (data) {
        return true;
      }
      return false;
    } catch {
      return false;
    }
  }
  return false;
}

// Determine if it is a JSON string
export function JSONStringToParse(str: string) {
  if (!isJSON(str)) {
    return str;
  }
  return JSON.parse(str);
}

/**
 * safe JSON parse function
 * @param text JSON string
 * @param defaultValue default value when parse failed
 * @param reviver JSON.parse reviver function
 * demo:
 * const data = safeJSONParse('{"name": "test"}', {});
 * const array = safeJSONParse('[1,2,3]', []);
 * const num = safeJSONParse('123', 0);
 * const invalidJson = safeJSONParse('invalid json', { fallback: true });
 */
export function safeJSONParse<T>(
  text: string,
  defaultValue: T,
  reviver?: (key: string, value: any) => any,
): T {
  if (!text) {
    return defaultValue;
  }

  try {
    const trimmed = text.trim();
    if (!trimmed) {
      return defaultValue;
    }
    if (trimmed === 'undefined') {
      return defaultValue;
    }
    if (trimmed === 'null') {
      return null as T;
    }

    const parsed = JSON.parse(trimmed, reviver);

    if (parsed === undefined || parsed === null) {
      return defaultValue;
    }

    return parsed;
  } catch {
    return defaultValue;
  }
}