package com.atlassian.httpclient.apache.httpcomponents.proxy;
   
   import com.atlassian.fugue.Option;
   import com.atlassian.httpclient.api.factory.HttpClientOptions;
   import com.google.common.collect.Lists;
   import org.apache.http.HttpHost;
   
   import static com.atlassian.httpclient.apache.httpcomponents.proxy.ProxyConfig.AuthenticationInfo;
   
  public class ProxyConfigFactory {
      public static Option<HttpHost> getProxyHost(final HttpClientOptions options) {
          return getProxyConfig(options).fold(Option::none, ProxyConfig::getProxyHost);
      }
  
      public static Iterable<AuthenticationInfo> getProxyAuthentication(final HttpClientOptions options) {
          return getProxyConfig(options).fold(Lists::newLinkedList, ProxyConfig::getAuthenticationInfo);
      }
  
      public static Option<ProxyConfig> getProxyConfig(final HttpClientOptions options) {
          final Option<ProxyConfig> config;
          switch (options.getProxyOptions().getProxyMode()) {
              case SYSTEM_PROPERTIES:
                  config = Option.some(new SystemPropertiesProxyConfig());
                  break;
              case CONFIGURED:
                  config = Option.some(new ProvidedProxyConfig(
                          options.getProxyOptions().getProxyHosts(), options.getProxyOptions().getNonProxyHosts()));
                  break;
              default:
                  config = Option.none();
          }
          return config;
      }
  }