package lava.net.psyc.packages;

import java.util.Hashtable;
import lava.net.common.UNL;
import lava.net.common.Value;
import lava.net.psyc.PSYCDeliveryException;
import lava.net.psyc.PSYCMessageCenter;
import lava.net.psyc.PSYCPackage;

/**
 *
 **/
public class Biff extends Skeleton 
{
   /**
    *
    **/
   public final static String PackageName = "Biff";

   /**
    *
    **/
   public final static String locationTag = "_mail_location";

   /**
    *
    **/
   private final static String[] locationAliases = {"mail_location"};

   /**
    *
    **/
   public final static String fromTag = "_origin";

   /**
    *
    **/
   private final static String[] fromAliases = {"origin"};

   /**
    *
    **/
   public final static String toTag = "_mail_to";

   /**
    *
    **/
   private final static String[] toAliases = {"mail_to"};

   /**
    *
    **/
   public final static String dateTag = "_mail_date";

   /**
    *
    **/
   private final static String[] dateAliases = {"mail_date"};

   /**
    *
    **/
   public final static String subjectTag = "_subject";

   /**
    *
    **/
   private final static String[] subjectAliases = {"subject"};

   /**
    *
    **/
   public final static String gotTag = "_notice_email_received";

   /**
    *
    **/
   private final static String[] gotAliases = {"notice_email_received"};

   /**
    *
    **/
   public final static String resetTag = "_notice_email_reset";

   /**
    *
    **/
   private final static String[] resetAliases = {"notice_email_reset"};

   class DummyListener implements BiffListener
   {
      /**
       *
       **/
      public void gotMail(UNL source, String location, String from, //
      String to, String date, String subject, String body)
      {
      }

      /**
       *
       **/
      public void clearMail(UNL source, String body)
      {
      }

   }

   /**
    *
    **/
   private BiffListener listener = new DummyListener();

   /**
    *
    **/
   private Hashtable tempVars = new Hashtable();

   /**
    *
    **/
   public String location = null;

   /**
    *
    **/
   public Biff(BiffListener listener)
   {
      super();
      setPackageName(PackageName);
      addPackageMethod(gotTag,gotAliases,true);
      addPackageMethod(resetTag,resetAliases,true);
      addPackageVariable(locationTag,locationAliases,false);
      addPackageVariable(fromTag,fromAliases,false);
      addPackageVariable(toTag,toAliases,false);
      addPackageVariable(dateTag,dateAliases,false);
      addPackageVariable(subjectTag,subjectAliases,false);
      if(listener != null)
         this.listener = listener;
   }

   /**
    *
    **/
   public boolean understands()
   {
      return !(listener instanceof DummyListener);
   }

   /**
    *
    **/
   public void received(UNL source, String method, String body)
   {
      // We'll ever get the method name we've registered,
      // even if a submethod were called
      if(gotTag.equals(method))
      {
         Value v = center.getValue(source,locationTag);
         String location = v == null ? null : v.toString();
         v = center.getValue(source,fromTag);
         String from = v == null ? null : v.toString();
         v = center.getValue(source,toTag);
         String to = v == null ? null : v.toString();
         v = center.getValue(source,dateTag);
         String date = v == null ? null : v.toString();
         v = center.getValue(source,subjectTag);
         String subject = v == null ? null : v.toString();
         listener.gotMail(source,location,from,to,date,subject,body);
      }
      else
         if(resetTag.equals(method))
            listener.clearMail(source,body);
   }

   /**
    *
    **/
   public void inform(UNL target, String location, String from, String to, //
   String date, String subject, String body) throws PSYCDeliveryException
   {
      tempVars.clear();
      if(location != null)
         tempVars.put(locationTag,new Value(location));
      if(from != null)
         tempVars.put(fromTag,new Value(from));
      if(to != null)
         tempVars.put(toTag,new Value(to));
      if(date != null)
         tempVars.put(dateTag,new Value(date));
      if(subject != null)
         tempVars.put(subjectTag,new Value(subject));
      center.sendChecked(target,PackageName,gotTag,body,tempVars);
   }

   /**
    *
    **/
   public void inform(UNL target, String from, String to, String date, //
   String subject, String body) throws PSYCDeliveryException
   {
      inform(target,location,from,to,date,subject,body);
   }

   /**
    *
    **/
   public void clear(UNL target, String body) throws PSYCDeliveryException
   {
      center.sendChecked(target,PackageName,resetTag,body);
   }

   /**
    *
    **/
   public void clear(UNL target) throws PSYCDeliveryException
   {
      clear(target,null);
   }

}