import { showToast, navigateBack } from "@tarojs/taro";

// 经纬度计算距离
export function calculateDistance(
  la1: number,
  lo1: number,
  la2: number,
  lo2: number
): any {
  var radLat1 = (la1 * Math.PI) / 180.0;
  var radLat2 = (la2 * Math.PI) / 180.0;
  var a = radLat1 - radLat2;
  var b = (lo1 * Math.PI) / 180.0 - (lo2 * Math.PI) / 180.0;
  var s =
    2 *
    Math.asin(
      Math.sqrt(
        Math.pow(Math.sin(a / 2), 2) +
          Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2), 2)
      )
    );
  s = s * 6378.137;
  s = Math.round(s * 10000) / 10000;
  return s.toFixed(2) + "km";
}

// 将角度转换为弧度
function toRadians(degrees: number): number {
  return (degrees * Math.PI) / 180;
}

// url转对象
interface UrlParams {
  type?: string;
  gid?: string;
  bid?: string;
}
export function parseQueryString(url: string) {
  const queryString = url.split("?")[1];

  if (!queryString) {
    return {};
  }

  const keyValuePairs = queryString.split("&");

  const result: UrlParams = {};

  keyValuePairs.forEach((keyValue) => {
    const [key, value] = keyValue.split("=");
    result[key] = decodeURIComponent(value);
  });

  return result;
}