@loaders.gl/i3s/src/lib/utils/url-utils.ts

i3s .

import {Node3DIndexDocument, SceneLayer3D} from '../../types';

/**
 * Return URL seperated from search params
 * @param url - URL that might have search params
 * @returns url without search params
 */
export function getUrlWithoutParams(url: string): string {
  let urlWithoutParams: string | null;

  try {
    const urlObj = new URL(url);
    urlWithoutParams = `${urlObj.origin}${urlObj.pathname}`;

    // On Windows `new URL(url)` makes `C:\...` -> `null\...`
    if (urlWithoutParams.startsWith('null')) {
      urlWithoutParams = null;
    }
  } catch (e) {
    urlWithoutParams = null;
  }
  return urlWithoutParams || url;
}

/**
 * Generates url with token if it is exists.
 * @param url
 * @param token
 * @returns
 */
export function getUrlWithToken(url: string, token: string | null = null): string {
  return token ? `${url}?token=${token}` : url;
}

/**
 * Generates attribute urls for tile.
 * @param tile
 * @returns list of attribute urls
 */
export function generateTileAttributeUrls(url: string, tile: Node3DIndexDocument): string[] {
  const {attributeData = []} = tile;
  const attributeUrls: string[] = [];

  for (let index = 0; index < attributeData.length; index++) {
    const attributeUrl = attributeData[index].href.replace('./', '');
    attributeUrls.push(`${url}/${attributeUrl}`);
  }

  return attributeUrls;
}

/**
 * Generates attribute urls for tileset based on tileset and resource
 * @param tileset - tileset metadata
 * @param url - tileset base url
 * @param resource - resource id per I3S spec
 * @returns {Array}
 */
export function generateTilesetAttributeUrls(tileset: SceneLayer3D, url: string, resource: number) {
  const attributeUrls: string[] = [];
  const {attributeStorageInfo = []} = tileset;

  for (let index = 0; index < attributeStorageInfo.length; index++) {
    const fileName = attributeStorageInfo[index].key;
    attributeUrls.push(`${url}/nodes/${resource}/attributes/${fileName}/0`);
  }

  return attributeUrls;
}