package com.atlassian.sal.core.net;
   
   import org.apache.commons.lang3.StringUtils;
   import org.slf4j.Logger;
   import org.slf4j.LoggerFactory;
   
   import java.util.Arrays;
   
   /**
   * Proxy configuration drawn from standard System properties
   */
  public class SystemPropertiesProxyConfig implements ProxyConfig {
  
      private static final Logger log = LoggerFactory.getLogger(SystemPropertiesProxyConfig.class);
  
      public static final String PROXY_HOST_PROPERTY_NAME = "http.proxyHost";
      public static final String PROXY_PORT_PROPERTY_NAME = "http.proxyPort";
      public static final String PROXY_USER_PROPERTY_NAME = "http.proxyUser";
      public static final String PROXY_PASSWORD_PROPERTY_NAME = "http.proxyPassword";
      public static final String PROXY_NON_HOSTS_PROPERTY_NAME = "http.nonProxyHosts";
  
      public static final int DEFAULT_PROXY_PORT = 80;
  
      private final String proxyHost;
      private final int proxyPort;
      private final String proxyUser;
      private final String proxyPassword;
      private final String[] nonProxyHosts;
  
      public SystemPropertiesProxyConfig() {
          proxyHost = System.getProperty(PROXY_HOST_PROPERTY_NAME);
          proxyPort = Integer.getInteger(PROXY_PORT_PROPERTY_NAME, DEFAULT_PROXY_PORT);
          proxyUser = System.getProperty(PROXY_USER_PROPERTY_NAME);
          proxyPassword = System.getProperty(PROXY_PASSWORD_PROPERTY_NAME);
          nonProxyHosts = System.getProperty(PROXY_NON_HOSTS_PROPERTY_NAME, "").split("\\|");
          if (log.isDebugEnabled()) {
              log.debug("Found nonProxyHosts - " + Arrays.toString(nonProxyHosts));
          }
      }
  
      @Override
      public boolean isSet() {
          return StringUtils.isNotBlank(proxyHost);
      }
  
      @Override
      public boolean requiresAuthentication() {
          return isSet() && StringUtils.isNotBlank(proxyUser);
      }
  
      @Override
      public String getHost() {
          return proxyHost;
      }
  
      @Override
      public int getPort() {
          return proxyPort;
      }
  
      @Override
      public String getUser() {
          return proxyUser;
      }
  
      @Override
      public String getPassword() {
          return proxyPassword;
      }
  
      @Override
      public String[] getNonProxyHosts() {
          return nonProxyHosts;
      }
  
      @Override
      public String toString() {
          return "SystemPropertiesProxyConfig{" +
                  "proxyHost='" + proxyHost + '\'' +
                  ", proxyPort=" + proxyPort +
                  ", proxyUser='" + proxyUser + '\'' +
                  ", proxyPassword='" + proxyPassword + '\'' +
                  ", nonProxyHosts=" + Arrays.toString(nonProxyHosts) +
                  '}';
      }
  }