/**
 *
 */
package de.intevation.gnv.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.w3c.dom.Node;

import de.intevation.gnv.action.sessionmodel.SessionModel;
import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
import de.intevation.gnv.artifactdatabase.objects.ArtifactDescription;
import de.intevation.gnv.util.XMLUtils;
import de.intevation.gnv.util.XSLTransformer;

/**
 * @author Tim Englich <tim.englich@intevation.de>
 *
 */
public class ChangeOptionsAction extends ArtifactDatabaseActionBase {
    /**
     * the logger, used to log exceptions and additonaly information
     */
    private static Logger log = Logger.getLogger(ChangeOptionsAction.class);
    /**
     * Constructor
     */
    public ChangeOptionsAction() {
        super();
    }

    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        log.debug("NextArtifactStepAction.execute");
        SessionModel sm = SessionModelFactory.getInstance().getSessionModel(request);
        ArtifactDescription ad = (ArtifactDescription)sm.getCurrentArtifact();
        ArtifactDatabaseClient adc = ArtifactDatabaseClientFactory.getInstance().getArtifactDatabaseClient();
        

        ArtifactDescription artifactDescription = adc.getCurrentStepDescription(sm.getSelectedArtifactFactory(), sm.getCurrentArtifact());
        
        Node currentUI = artifactDescription.getCurrentUI();
        XSLTransformer transformer = new XSLTransformer();
        String ui = transformer.transform(new XMLUtils().getNodeXPath(currentUI, "dynamic"), "UTF-8", request.getRealPath("WEB-INF/config/templates/describe-ui.xsl"));
        
        request.setAttribute("ui", ui);
        
        String staticUI = transformer.transform(new XMLUtils().getNodeXPath(currentUI, "static"), "UTF-8", request.getRealPath("WEB-INF/config/templates/describe-ui-static.xsl"));
        request.setAttribute("staticui", staticUI);
        
        request.setAttribute("furthertargets", (ad.getReachableStates() != null && !ad.getReachableStates().isEmpty()));
        
        if (ad.getReachableStates() != null && !ad.getReachableStates().isEmpty()){
        }else{
            request.setAttribute("diagramm", true);
        }
        return super.execute(mapping, form, request, response);
    }
    
    

}