package yarfraw.mapping.backward.impl;

 import static yarfraw.io.parser.ElementQName.RSS20_COPYRIGHTS;

 import static yarfraw.io.parser.ElementQName.RSS20_DESCRIPTION;

 import static yarfraw.io.parser.ElementQName.RSS20_DOCS;

 import static yarfraw.io.parser.ElementQName.RSS20_GENERATOR;

 import static yarfraw.io.parser.ElementQName.RSS20_LANGUAGE;

 import static yarfraw.io.parser.ElementQName.RSS20_LAST_BUILD_DATE;

 import static yarfraw.io.parser.ElementQName.RSS20_LINK;

 import static yarfraw.io.parser.ElementQName.RSS20_MANAGINGEDITOR;

 import static yarfraw.io.parser.ElementQName.RSS20_PUBDATE;

 import static yarfraw.io.parser.ElementQName.RSS20_TITLE;

 import static yarfraw.io.parser.ElementQName.RSS20_TTL;

 import static yarfraw.io.parser.ElementQName.RSS20_WEBMASTER;

 import static yarfraw.utils.XMLUtils.same;

 import javax.xml.bind.JAXBElement;

 import org.apache.commons.lang.builder.ToStringBuilder;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.w3c.dom.Element;

 import yarfraw.core.datamodel.CategorySubject;

 import yarfraw.core.datamodel.ChannelFeed;

 import yarfraw.core.datamodel.Cloud;

 import yarfraw.core.datamodel.Day;

 import yarfraw.core.datamodel.Image;

 import yarfraw.core.datamodel.TextInput;

 import yarfraw.core.datamodel.YarfrawException;

 import yarfraw.generated.rss20.elements.TCategory;

 import yarfraw.generated.rss20.elements.TCloud;

 import yarfraw.generated.rss20.elements.TImage;

 import yarfraw.generated.rss20.elements.TRssChannel;

 import yarfraw.generated.rss20.elements.TRssItem;

 import yarfraw.generated.rss20.elements.TSkipDay;

 import yarfraw.generated.rss20.elements.TSkipDaysList;

 import yarfraw.generated.rss20.elements.TSkipHoursList;

 import yarfraw.generated.rss20.elements.TTextInput;

 import yarfraw.mapping.backward.ToChannelRss20;

 public class ToChannelRss20Impl implements ToChannelRss20{

   private static final Log LOG = LogFactory.getLog(ToChannelRss20Impl.class);

   private static final ToChannelRss20 _instance = new ToChannelRss20Impl();

   private ToChannelRss20Impl() {}

   public static ToChannelRss20 getInstance(){

     return _instance;

   }

   @SuppressWarnings("unchecked")

   public ChannelFeed execute(TRssChannel ch) throws YarfrawException {

     if(ch == null){

       return null;

     }

     ChannelFeed c = new ChannelFeed();

     if(ch.getItem() != null){

       for(TRssItem item : ch.getItem()){

         c.addItem(Rss20MappingUtils.toItem(item));

       }

     }

     c.getOtherAttributes().putAll(ch.getOtherAttributes());

     for(Object o : ch.getTitleOrLinkOrDescription()){

       if(o == null){

         continue;

       }

       if (o instanceof JAXBElement) {

         JAXBElement jaxbElement = (JAXBElement) o;

         Object val = jaxbElement.getValue();

         if(same(jaxbElement.getName(), RSS20_TITLE)){

           c.setTitle((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_LINK)) {  

           c.addLink((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_DESCRIPTION)) {

           c.setDescriptionOrSubtitle((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_COPYRIGHTS)) {

           c.setRights((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_DOCS)) {

           c.setDocs((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_GENERATOR)) {

           c.setGenerator((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_LANGUAGE)) {

           c.setLang((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_LAST_BUILD_DATE)) {

           c.setLastBuildOrUpdatedDate((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_MANAGINGEDITOR)) {

           c.addManagingEditorOrAuthorOrPublisher((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_PUBDATE)) {

           c.setPubDate((String)jaxbElement.getValue());

         }else if (same(jaxbElement.getName(), RSS20_TTL)) {

           c.setTtl(Integer.valueOf(jaxbElement.getValue().toString()));

         }else if (same(jaxbElement.getName(), RSS20_WEBMASTER)) {

           c.addWebMasterOrCreator((String)jaxbElement.getValue());

         }else if (val instanceof TCategory) {

           TCategory cat = (TCategory) val;

           c.addCategorySubject(new CategorySubject(cat.getValue())

                                     .setDomainOrScheme(cat.getDomain()));

         }else if (val instanceof TSkipDaysList) {

           TSkipDaysList sdl = (TSkipDaysList)val;

           for(TSkipDay day : sdl.getDay()){

             c.addSkipDay(Day.valueOf(day.value()));

           }

         }else if (val instanceof TSkipHoursList) {

           TSkipHoursList shl = (TSkipHoursList)val;

           for(Integer h : shl.getHour()){

             c.addSkipHour(h);

           }

         }else if (val instanceof TCloud) {

           TCloud cloud = (TCloud)val;

           c.setCloud(new Cloud(cloud.getDomain(), 

               cloud.getPort() == null ? null : cloud.getPort().toString(), 

                   cloud.getPath(), cloud.getRegisterProcedure(), 

                   cloud.getProtocol()==null?null:cloud.getProtocol().value()));

         }else if (val instanceof TImage) {

           TImage image = (TImage)val;

           c.setImageOrIcon(new Image(image.getUrl(), image.getTitle(), image.getLink(), 

                 image.getWidth(), image.getHeight(), image.getDescription()));

         }else if (val instanceof TTextInput) {

           TTextInput in = (TTextInput)val;

           c.setTexInput(new TextInput(in.getTitle(), in.getDescription(), in.getName(), in.getLink()));

         }else{

           LOG.warn("Unexpected jaxbElement: "+ToStringBuilder.reflectionToString(jaxbElement)+" this should not happen!");

         }

       }

       else if (o instanceof Element) {

         Element e = (Element) o;

         c.getOtherElements().add(e);

       }else{

         LOG.warn("Unexpected object: "+ToStringBuilder.reflectionToString(o)+" this should not happen!");

       }

     }                                           

     return c;

   }

 }