package com.aurea.maven.plugins.sonic.sdm;

 import java.io.File;

 import java.util.Properties;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.codehaus.plexus.util.xml.XmlStreamReader;

 import org.codehaus.plexus.util.xml.Xpp3Dom;

 import org.codehaus.plexus.util.xml.Xpp3DomBuilder;

 import com.aurea.maven.plugins.sonic.AbstractSonicMojo;

 public abstract class AbstractSdmMojo extends AbstractSonicMojo {

   /**

    * @return location of the SDM directory

    */

   protected File getTargetSDMDir() {

     return new File(getOutputDirectory(), "sonicesb/sdm");

   }

   /**

    * @return the generated tailoring properties file

    */

   protected File getGeneratedPropertiesFile() {

     return new File(getTargetSDMDir(), "/generated.tailoring.properties");

   }

   /**

    * @return the generated Topology file

    */

   protected File getGeneratedTopologyFile() {

     return new File(getTargetSDMDir(), "/generated.Topology.xml");

   }

   /**

    * @return the generated Topology file

    */

   protected File getMasterTopologyFile() {

     return new File(getTargetSDMDir(), "/Topology.xml");

   }

   protected Properties buildPropertiesFromTopology(File topoFile) throws MojoExecutionException {

     try {

       Properties generated = new Properties();

       XmlStreamReader topoReader = new XmlStreamReader(topoFile);

       Xpp3Dom topology = Xpp3DomBuilder.build(topoReader);

       Xpp3Dom parameters = topology.getChild("Parameters");

       for (Xpp3Dom parameter : parameters.getChildren()) {

             String id = getChildElementValue(parameter, "Id");

         String value = getChildElementValue(parameter, "Value");

                 getLog().debug("Adding Property: " + id + " -- " + value);

         generated.put(id, value);

       }

       return generated;

     } catch (Exception e) {

       throw new MojoExecutionException("Exception while reading topology file: " + topoFile.getName(), e);

     }

   }

   protected String getChildElementValue(Xpp3Dom parent, String name) {

           Xpp3Dom childElement = parent.getChild(name);

           if(childElement != null)

                   return childElement.getValue();

           throw new IllegalArgumentException("Child element " + name + " does not exist in element " + parent.getName());

   }

 }