/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.client5.http.impl;
  
  import org.apache.hc.client5.http.HttpRoute;
  import org.apache.hc.client5.http.auth.StandardAuthScheme;
  import org.apache.hc.client5.http.auth.AuthScope;
  import org.apache.hc.client5.http.auth.CredentialsStore;
  import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
  import org.apache.hc.core5.annotation.Internal;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.HttpRequest;
  import org.apache.hc.core5.net.URIAuthority;
  import org.apache.hc.core5.util.Args;
  
  /**
   * Authentication support methods.
   *
   * @since 5.0
   */
  @Internal
  public class AuthSupport {
  
      public static void extractFromAuthority(
              final String scheme,
              final URIAuthority authority,
              final CredentialsStore credentialsStore) {
          Args.notNull(credentialsStore, "Credentials store");
          if (authority == null) {
              return;
          }
          final String userInfo = authority.getUserInfo();
          if (userInfo == null) {
              return;
          }
          final int atColon = userInfo.indexOf(':');
          final String userName = atColon >= 0 ? userInfo.substring(0, atColon) : userInfo;
          final char[] password = atColon >= 0 ? userInfo.substring(atColon + 1).toCharArray() : null;
  
          credentialsStore.setCredentials(
                  new AuthScope(scheme, authority.getHostName(), authority.getPort(), null, StandardAuthScheme.BASIC),
                  new UsernamePasswordCredentials(userName, password));
      }
  
      public static HttpHost resolveAuthTarget(final HttpRequest request, final HttpRoute route) {
          Args.notNull(request, "Request");
          Args.notNull(route, "Route");
          final URIAuthority authority = request.getAuthority();
          final String scheme = request.getScheme();
          final HttpHost target = authority != null ? new HttpHost(scheme, authority) : route.getTargetHost();
          if (target.getPort() < 0) {
              return new HttpHost(
                      target.getSchemeName(),
                      target.getHostName(),
                      route.getTargetHost().getPort());
          }
          return target;
      }
  
  }