import qs from 'query-string';

/**
 * 将 PascalCase/camelCase 转为短横线风格
 * 例: MyDeviceName → my-device-name
 */
export function toKebabCase(str: string): string {
  return str
    .replace(/([a-z0-9])([A-Z])/g, '$1-$2')
    .replace(/([A-Z])([A-Z][a-z])/g, '$1-$2')
    .toLowerCase();
}

/**
 * 将后端返回的菜单 URL 路径转换为短横线风格
 * 示例:
 *   /IoT/Device/Product → /iot/device/product
 *   /EMS/EnergyReport → /ems/energy-report
 *
 * @param url 后端返回的原始 URL
 * @returns 短横线风格的 URL
 */
export function normalizeMenuUrl(url: string): string {
  if (!url || typeof url !== 'string') return url;

  // 分离路径和查询参数
  const [path, query] = url.split('?');

  // 转换路径段为短横线风格
  const normalizedPath = path
    .split('/')
    .filter(Boolean)
    .map((segment) => toKebabCase(segment))
    .join('/');

  // 重新拼接路径（保留前导斜杠）
  const result = '/' + normalizedPath;

  // 附加查询参数
  return query ? `${result}?${query}` : result;
}

export function isUrl(path: string) {
  /* eslint no-useless-escape:0 */
  const reg =
    /(((^https?:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)(:[\d]+)?((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)$/g;
  return reg.test(path);
}

/**
 * 生成带Get参数的URL
 * @param {String} url      原来的url
 * @param {Object} params   get 参数
 */
export function generateUrlWithGetParam(url: string, params: {}) {
  let newUrl = url;
  if (params && Object.keys(params).length >= 1) {
    const newParams = params; // filterNullValueObject
    if (Object.keys(newParams).length >= 1) {
      newUrl += `${url.indexOf('?') >= 0 ? '&' : '?'}${qs.stringify(newParams)}`;
    }
  }
  return newUrl;
}

/**
 * 得到get请求后面的参数部分,并去掉参数值为空的
 * @param param
 * @returns {String}
 */
export function getUrlParam(param: { [x: string]: any }) {
  let on = true;
  let result = '';
  for (const item in param) {
    if (on) {
      on = false;
      if (param[item] || param[item] === 0 || param[item] === false) {
        result = `?${item}=${param[item]}`;
      } else {
        result = '?';
      }
    } else if (param[item] || param[item] === 0 || param[item] === false) {
      result = `${result}&${item}=${param[item]}`;
    }
  }
  return result;
}