/**

 * Razvan's public code. Copyright 2008 based on Apache license (share alike) see LICENSE.txt for

 * details.

 */

package com.razie.pub.comms;



import java.net.MalformedURLException;

import java.net.URL;



import com.razie.pub.comms.Agents;



import razie.base.ActionToInvoke;

import razie.base.ActionItem;

import razie.base.AttrAccess;

import razie.base.ActionContext;

import razie.base.BaseActionToInvoke;

import razie.draw.Drawable;



/**

 * same semantics as ActionToInvike, except it is done via POST, not GET

 * 

 * this cannot be printed to a web page...since you can't

 * 

 * @author razvanc99

 */

public class POSTActionToInvoke extends BaseActionToInvoke implements Cloneable, AttrAccess, Drawable {

   /**

    * constructor

    * 

    * @param target the prefix used depending on the drawing technology - for http, it's the URL to

    *        append to

    * @param item this is the action, contains the actual command name and label to display

    * @param pairs

    */

   public POSTActionToInvoke(String target, ActionItem item, AttrAccess postArgs, Object... pairs) {

      super(target, item, pairs);

      this.postArgs = postArgs;

   }



   /**

    * constructor

    * 

    * @param target the prefix used depending on the drawing technology - for http, it's the URL to

    *        append to

    * @param item this is the action, contains the actual command name and label to display

    * @param pairs

    */

   public POSTActionToInvoke(ActionItem item, AttrAccess postArgs, Object... pairs) {

      super(Agents.me().url, item, pairs);

      this.postArgs = postArgs;

   }



   // TODO 3-1 CODE clone args and postargs

   public POSTActionToInvoke clone() {

      return new POSTActionToInvoke(this.target, this.actionItem.clone(), this.postArgs, this.toPairs());

   }



   /**

    * should not tie this to actual technology, but URLs are the most common form of invoking

    * actions

    */

   public String makeActionUrl() {

      String url = target.endsWith("/") ? target : target + "/";

      url += actionItem.name;

      url = addToUrl(url);

      return LightAuth.wrapUrl(url);

   }



   /**

    * this will take an URL and parse it into the same action object it created it... could be

    * useful, so we'll implement then - for now it documents the idea

    */

   public static ActionToInvoke fromActionUrl(String url) {

      // TODO FUTURE-implement

      return null;

   }



   /**

    * execute this action in a given context. The context must include me as well?

    * 

    * default implementation assumes i need to call an url and get the first line of response

    */

   public Object act(ActionContext ctx) {

      try {

         URL url = new URL(this.makeActionUrl());

         // TODO implement the POST

         return Comms.readUrl(url.toExternalForm());

      } catch (MalformedURLException e) {

         throw new RuntimeException("while getting the command url: " + this.makeActionUrl(), e);

      }

   }



   @Override

   public ActionToInvoke args(Object... args) {

      return new POSTActionToInvoke(this.target, this.actionItem.clone(), this.postArgs, args);

   }



   public AttrAccess postArgs;

}