package org.apache.torque.mojo;

 import static org.apache.commons.io.FileUtils.forceMkdir;

 import java.io.File;

 import java.io.FileInputStream;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.util.ArrayList;

 import java.util.List;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.torque.mojo.morph.DataMorpher;

 import org.apache.torque.mojo.morph.MorphRequest;

 import org.apache.torque.mojo.morph.Morpher;

 import org.codehaus.plexus.util.DirectoryScanner;

 import org.codehaus.plexus.util.StringUtils;

 import org.kuali.core.db.torque.PrettyPrint;

 import org.kuali.core.db.torque.Utils;

 /**

  * Converts Ant impex data XML files into maven-impex-plugin data XML files

  *

  * @goal morphdata

  * @phase generate-sources

  */

 public class MorphDataMojo extends BaseMojo {

     Utils utils = new Utils();

     /**

      * The directory in which the morphed XML will be generated.

      *

      * @parameter expression="${newDataOutputDir}" default-value="${project.build.directory}/generated-impex/xml"

      * @required

      */

     private File newDataOutputDir;

     /**

      * The directory containing the source (non-morphed) data XML files

      *

      * @parameter expression="${oldDataXMLDir}" default-value="${basedir}/src/main/impex"

      * @required

      */

     private File oldDataXMLDir;

     /**

      * The default set of files in that directory to include (ant style notation)

      *

      * @parameter expression="${oldDataXMLIncludes}" default-value="*.xml"

      * @required

      */

     private String oldDataXMLIncludes;

     /**

      * The default set of files in that directory to exclude (ant style notation)

      *

      * @parameter expression="${oldDataXMLExcludes}" default-value="schema.xml"

      */

     private String oldDataXMLExcludes;

     /**

      * Use our configuration to determine the list of files we need to convert

      */

     protected String[] getOldFiles() throws IOException {

         DirectoryScanner ds = new DirectoryScanner();

         ds.setIncludes(new String[] { getOldDataXMLIncludes() });

         if (getOldDataXMLExcludes() != null) {

             ds.setExcludes(new String[] { getOldDataXMLExcludes() });

         }

         ds.setBasedir(getOldDataXMLDir());

         ds.scan();

         return ds.getIncludedFiles();

     }

     protected boolean isMorphNeeded(final File oldFile, final File newFile) {

         if (!newFile.exists()) {

             return true;

         }

         long lastModifiedOld = oldFile.lastModified();

         long lastModifiedNew = newFile.lastModified();

         return lastModifiedOld > lastModifiedNew;

     }

     protected List<MorphRequest> getMorphRequests(final String[] oldFiles) throws IOException {

         String inputPath = getOldDataXMLDir().getAbsolutePath();

         String outputPath = getNewDataOutputDir().getAbsolutePath();

         forceMkdir(getNewDataOutputDir());

         List<MorphRequest> requests = new ArrayList<MorphRequest>();

         for (String oldFilename : oldFiles) {

             String oldFilePath = inputPath + FS + oldFilename;

             String newFilePath = outputPath + FS + oldFilename;

             File oldFile = new File(oldFilePath);

             File newFile = new File(newFilePath);

             if (!isMorphNeeded(oldFile, newFile)) {

                 getLog().debug("Skipping morph on " + oldFilename);

                 continue;

             }

             MorphRequest request = new MorphRequest();

             request.setEncoding(getEncoding());

             request.setName(oldFile.getName());

             request.setInputStream(new FileInputStream(oldFile));

             request.setOutputStream(new FileOutputStream(newFile));

             requests.add(request);

         }

         return requests;

     }

     protected void showConfig() {

         getLog().info(StringUtils.repeat("-", utils.getDefaultPrintableConsoleWidth() - 7));

         getLog().info("   From: " + oldDataXMLDir.getAbsolutePath());

         getLog().info("     To: " + newDataOutputDir.getAbsolutePath());

         getLog().info("Include: " + oldDataXMLIncludes);

         getLog().info("Exclude: " + oldDataXMLExcludes);

     }

     @Override

     protected void executeMojo() throws MojoExecutionException {

         try {

             showConfig();

             String[] oldFiles = getOldFiles();

             PrettyPrint pp = new PrettyPrint("[INFO] Converting " + oldFiles.length + " data XML files");

             utils.left(pp);

             List<MorphRequest> requests = getMorphRequests(oldFiles);

             for (MorphRequest request : requests) {

                 Morpher morpher = new DataMorpher(request, getProject().getArtifactId());

                 morpher.executeMorph();

             }

             utils.right(pp);

             int skipCount = oldFiles.length - requests.size();

             if (skipCount > 0) {

                 getLog().info("Skipped " + skipCount + " files that were unchanged.");

             }

         } catch (IOException e) {

             throw new MojoExecutionException("Unexpected error", e);

         }

     }

     public File getNewDataOutputDir() {

         return newDataOutputDir;

     }

     public void setNewDataOutputDir(final File newDataOutputDir) {

         this.newDataOutputDir = newDataOutputDir;

     }

     public File getOldDataXMLDir() {

         return oldDataXMLDir;

     }

     public void setOldDataXMLDir(final File oldDataXMLDir) {

         this.oldDataXMLDir = oldDataXMLDir;

     }

     public String getOldDataXMLIncludes() {

         return oldDataXMLIncludes;

     }

     public void setOldDataXMLIncludes(final String oldDataXMLIncludes) {

         this.oldDataXMLIncludes = oldDataXMLIncludes;

     }

     public String getOldDataXMLExcludes() {

         return oldDataXMLExcludes;

     }

     public void setOldDataXMLExcludes(final String oldDataXMLExcludes) {

         this.oldDataXMLExcludes = oldDataXMLExcludes;

     }

 }