/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * url.ts maintains common functions related to URL.
 */

/**
 * Generate a websocket URL based on a server endpoint.
 */
export function getWebsocketUrl(endpoint: string, port: string): string {
  const baseURI = document.baseURI;
  const hostname = new URL(baseURI).hostname;
  let webSocketUrl;
  if (port !== "") {
    webSocketUrl = new URL(endpoint, `http://${hostname}:${port}`);
  } else {
    webSocketUrl = new URL(endpoint, document.baseURI);
  }

  // replace protocol, so that http -> ws, https -> wss
  webSocketUrl.protocol = webSocketUrl.protocol.replace("http", "ws");
  return webSocketUrl.toString();
}
