package yarfraw.mapping.backward.impl;

 import static yarfraw.mapping.backward.impl.Atom03MappingUtils.getElements;

 import static yarfraw.mapping.backward.impl.Atom03MappingUtils.toGenerator;

 import static yarfraw.mapping.backward.impl.Atom03MappingUtils.toItemEntry;

 import static yarfraw.mapping.backward.impl.Atom03MappingUtils.toLink;

 import static yarfraw.mapping.backward.impl.Atom03MappingUtils.toPerson;

 import yarfraw.core.datamodel.ChannelFeed;

 import yarfraw.generated.atom03.elements.EntryType;

 import yarfraw.generated.atom03.elements.FeedType;

 import yarfraw.generated.atom03.elements.LinkType;

 import yarfraw.generated.atom03.elements.PersonType;

 import yarfraw.mapping.backward.ToChannelAtom03;

 /**

  * TODO: document me

  * @author jliang

  *

  */

 public class ToChannelAtom03Impl implements ToChannelAtom03{

   private static final ToChannelAtom03 _instance = new ToChannelAtom03Impl();

   private ToChannelAtom03Impl() {}

   public static ToChannelAtom03 getInstance(){

     return _instance;

   }

   public ChannelFeed execute(FeedType feed){

     if(feed == null){

       return null;

     }

     ChannelFeed c = new ChannelFeed();

     if(feed.getAuthor() != null){

       c.addManagingEditorOrAuthorOrPublisher(toPerson(feed.getAuthor()));

     }

     if(feed.getContributor() != null){

       for(PersonType p : feed.getContributor()){

         c.addContributor(toPerson(p));

       }

     }

     c.setRights(feed.getCopyright());

     if(feed.getEntry() != null){

       for(EntryType e : feed.getEntry()){

         c.addItem(toItemEntry(e));

       }

     }

     c.setGenerator(toGenerator(feed.getGenerator()));

     if(feed.getId() != null){

       c.setUid(feed.getId());

     }

 //  TODO:  feed.getInfo()

     c.setLang(feed.getLang());

     if(feed.getLink() != null){

       for(LinkType l : feed.getLink()){

         c.addLink(toLink(l));

       }

     }

     c.setLastBuildOrUpdatedDate(feed.getModified());

 //    c.setTitle(feed.getTitle());

     if(feed.getOtherAttributes() != null){

       c.getOtherAttributes().putAll(feed.getOtherAttributes());

     }

     c.getOtherElements().addAll(getElements(feed.getAny()));    

     return c;

   }

 }