package com.atlassian.httpclient.apache.httpcomponents.proxy;
   
   
   import com.atlassian.fugue.Option;
   import com.google.common.collect.Iterables;
   import org.apache.http.HttpHost;
   import org.apache.http.auth.AuthScope;
   import org.apache.http.auth.Credentials;
   
  import java.net.ProxySelector;
  
  public abstract class ProxyConfig {
      public Option<HttpHost> getProxyHost() {
          final HttpHost httpHost = Iterables.getFirst(getProxyHosts(), null);
          if (httpHost != null) {
              return Option.some(new HttpHost(httpHost.getHostName(), httpHost.getPort()));
          } else {
              return Option.none();
          }
      }
  
      abstract Iterable<HttpHost> getProxyHosts();
  
      public abstract Iterable<AuthenticationInfo> getAuthenticationInfo();
  
      /**
       * @return the {@link ProxySelector} equivalent of this this proxy configuration
       */
      public abstract ProxySelector toProxySelector();
  
      public static class AuthenticationInfo {
          private final AuthScope authScope;
          private final Option<Credentials> credentials;
  
          public AuthenticationInfo(final AuthScope authScope, final Option<Credentials> credentials) {
              this.authScope = authScope;
              this.credentials = credentials;
          }
  
          public AuthScope getAuthScope() {
              return authScope;
          }
  
          public Option<Credentials> getCredentials() {
              return credentials;
          }
      }
  }