package org.apache.struts2.dispatcher;

import com.opensymphony.xwork2.ActionInvocation;

import com.opensymphony.xwork2.Result;

import com.opensymphony.xwork2.util.TextParseUtil;

import com.opensymphony.xwork2.util.TextParseUtil.ParsedValueEvaluator;

import com.opensymphony.xwork2.util.logging.Logger;

import com.opensymphony.xwork2.util.logging.LoggerFactory;

import java.io.UnsupportedEncodingException;

import java.net.URLEncoder;

import org.apache.struts2.StrutsStatics;

public abstract class StrutsResultSupport

  implements Result, StrutsStatics

{

  private static final Logger LOG = LoggerFactory.getLogger(StrutsResultSupport.class);

  public static final String DEFAULT_PARAM = "location";

  private boolean parse;

  private boolean encode;

  private String location;

  private String lastFinalLocation;

  public StrutsResultSupport()

  {

    this(null, true, false);

  }

  public StrutsResultSupport(String location) {

    this(location, true, false);

  }

  public StrutsResultSupport(String location, boolean parse, boolean encode) {

    this.location = location;

    this.parse = parse;

    this.encode = encode;

  }

  public void setLocation(String location)

  {

    this.location = location;

  }

  public String getLocation()

  {

    return this.location;

  }

  public String getLastFinalLocation()

  {

    return this.lastFinalLocation;

  }

  public void setParse(boolean parse)

  {

    this.parse = parse;

  }

  public void setEncode(boolean encode)

  {

    this.encode = encode;

  }

  public void execute(ActionInvocation invocation)

    throws Exception

  {

    this.lastFinalLocation = conditionalParse(this.location, invocation);

    doExecute(this.lastFinalLocation, invocation);

  }

  protected String conditionalParse(String param, ActionInvocation invocation)

  {

    if ((this.parse) && (param != null) && (invocation != null)) {

      return TextParseUtil.translateVariables(param, invocation.getStack(), new TextParseUtil.ParsedValueEvaluator()

      {

        public Object evaluate(String parsedValue) {

          if ((StrutsResultSupport.this.encode) &&

            (parsedValue != null))

          {

            try

            {

              return URLEncoder.encode(parsedValue, "UTF-8");

            }

            catch (UnsupportedEncodingException e) {

              if (StrutsResultSupport.LOG.isWarnEnabled()) {

                StrutsResultSupport.LOG.warn("error while trying to encode [" + parsedValue + "]", e, new String[0]);

              }

            }

          }

          return parsedValue;

        }

      });

    }

    return param;

  }

  protected abstract void doExecute(String paramString, ActionInvocation paramActionInvocation)

    throws Exception;

}