package org.andromda.maven.plugin;
   
   import java.io.File;
   import java.net.URL;
   import org.andromda.core.AndroMDA;
   import org.andromda.core.common.ResourceUtils;
   import org.andromda.core.configuration.Configuration;
   import org.andromda.core.configuration.Model;
   import org.andromda.core.configuration.Repository;
  import org.apache.maven.plugin.MojoExecutionException;
  
  /**
   * A Maven2 plugin to run AndroMDA.
   *
   * @author Chad Brandon
   * @goal run
   * @phase generate-sources
   * @requiresDependencyResolution runtime
   */
  public class AndroMDAMojo
      extends AbstractAndroMDAMojo
  {
      /**
       * Whether or not a last modified check should be performed before running AndroMDA again.
       * Checks files in buildSourceDirectory against configurationUri and referenced model dates.
       *
       * @parameter expression="${lastModifiedCheck}"
       *   default-value=true
       */
      private boolean lastModifiedCheck = true;
  
      /**
       * Whether or not processing should be skipped (this is if you just want to force AndroMDA
       * not to run on your model).
       *
       * @parameter expression="${andromda.run.skip}"
       *   default-value=false
       */
      private boolean skipProcessing = false;
  
      /**
       * The directory to which the build source is located (any generated source).
       *
       * @parameter expression="${project.build.directory}/src/main/java"
       */
      private File buildSourceDirectory;
  
      /**
       * The directory where the model generation output history is located
       * (Modelname file containing a list of files generated by that model).
       *
       * @parameter expression="${project.build.directory}/history"
       */
      private File modelOutputHistory;
  
      /**
       * @param lastModifiedCheck the lastModifiedCheck to set
       */
      public void setLastModifiedCheck(boolean lastModifiedCheck)
      {
          this.lastModifiedCheck = lastModifiedCheck;
      }
  
      /**
       * @param buildSourceDirectory the buildSourceDirectory to set
       */
      public void setBuildSourceDirectory(File buildSourceDirectory)
      {
          this.buildSourceDirectory = buildSourceDirectory;
      }
  
      /**
       * @param modelOutputHistory the modelOutputHistory to set
       */
      public void setModelOutputHistory(File modelOutputHistory)
      {
          this.modelOutputHistory = modelOutputHistory;
      }
  
      /**
       * @see org.andromda.maven.plugin.AbstractAndroMDAMojo#execute(org.andromda.core.configuration.Configuration)
       */
      public void execute(final Configuration configuration)
          throws MojoExecutionException
      {
          if (getLog().isDebugEnabled())
          {
              getLog().debug("lastModifiedCheck="+this.lastModifiedCheck + " skipProcessing="+this.skipProcessing 
                      + " modelOutputHistory="+this.modelOutputHistory + " allowMultipleRuns="+this.allowMultipleRuns);            
          }
          if (!this.skipProcessing)
          {
              boolean execute = true;
              if (this.lastModifiedCheck)
              {
                  long date = this.getLastModelConfigDate(configuration);
                  execute = ResourceUtils.modifiedAfter(date,
                          this.buildSourceDirectory);
                  if (getLog().isDebugEnabled())
                 {
                     getLog().debug("this.lastModifiedCheck="+this.lastModifiedCheck + " execute="+execute + " date="+date);            
                 }
             }
             if (execute)
             {
                 final AndroMDA andromda = AndroMDA.newInstance();
                 final String historyPath = this.modelOutputHistory!=null ? this.modelOutputHistory.getAbsolutePath() : null;
                 andromda.run(configuration, lastModifiedCheck,  historyPath);
                 andromda.shutdown();
             }
             else
             {
                 this.getLog().info("Files are up-to-date, skipping AndroMDA execution");
             }
         }
         if (this.buildSourceDirectory != null)
         {
             this.getProject().addCompileSourceRoot(this.buildSourceDirectory.getPath());
         }
     }
 
     /**
      * Find the latest date from the configurationUri (andromda.xml) and all referenced models.
      * @param configuration The model code generation configuration (model list)
      */
     private long getLastModelConfigDate(final Configuration configuration)
     {
         final URL configurationUri = ResourceUtils.toURL(this.configurationUri);
         long date = ResourceUtils.getLastModifiedTime(configurationUri);
         final Repository[] repositories = configuration.getRepositories();
         int repositoryCount = repositories.length;
         for (int ctr = 0; ctr < repositoryCount; ctr++)
         {
             final Repository repository = repositories[ctr];
             if (repository != null)
             {
                 final Model[] models = repository.getModels();
                 final int modelCount = models.length;
                 for (int ctr2 = 0; ctr2 < modelCount; ctr2++)
                 {
                     final Model model = models[ctr2];
                     long newDate = model.getLastModified();
                     if (newDate > date)
                     {
                         date = newDate;
                     }
                 }
             }
         }
         return date;
     }
 }