package org.apache.maven.plugins.surefire.report;
   
   import org.apache.maven.doxia.siterenderer.Renderer;
   import org.apache.maven.model.ReportPlugin;
   import org.apache.maven.project.MavenProject;
   import org.apache.maven.reporting.AbstractMavenReport;
   import org.apache.maven.reporting.MavenReportException;
   import org.codehaus.plexus.util.PathTool;
   import org.codehaus.plexus.util.StringUtils;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Locale;
  import java.util.ResourceBundle;
  
  /**
   * Abstract base class for reporting test results using Surefire.
   *
   * @author Stephen Connolly
   * @version $Id$
   */
  public abstract class AbstractSurefireReportMojo
      extends AbstractMavenReport
  {
      /**
       * Location where generated html will be created.
       *
       * @parameter expression="${project.reporting.outputDirectory}"
       * @noinspection UnusedDeclaration
       */
      private File outputDirectory;
  
      /**
       * Doxia Site Renderer
       *
       * @component
       * @noinspection UnusedDeclaration
       */
      private Renderer siteRenderer;
  
      /**
       * Maven Project
       *
       * @parameter expression="${project}"
       * @required @readonly
       * @noinspection UnusedDeclaration
       */
      private MavenProject project;
  
      /**
       * If set to false, only failures are shown.
       *
       * @parameter expression="${showSuccess}" default-value="true"
       * @required
       * @noinspection UnusedDeclaration
       */
      private boolean showSuccess;
  
      /**
       * Directories containing the XML Report files that will be parsed and rendered to HTML format.
       *
       * @parameter
       * @noinspection UnusedDeclaration
       */
      private File[] reportsDirectories;
  
      /**
       * (Deprecated, use reportsDirectories) This directory contains the XML Report files that will be parsed and rendered to HTML format.
       *
       * @parameter
       * @deprecated
       * @noinspection UnusedDeclaration
       */
      private File reportsDirectory;
  
      /**
       * The projects in the reactor for aggregation report.
       *
       * @parameter expression="${reactorProjects}"
       * @readonly
       * @noinspection MismatchedQueryAndUpdateOfCollection, UnusedDeclaration
       */
      private List reactorProjects;
  
      /**
       * Location of the Xrefs to link.
       *
       * @parameter default-value="${project.reporting.outputDirectory}/xref-test"
       * @noinspection UnusedDeclaration
       */
      private File xrefLocation;
  
      /**
       * Whether to link the XRef if found.
       *
       * @parameter expression="${linkXRef}" default-value="true"
      * @noinspection UnusedDeclaration
      */
     private boolean linkXRef;
 
     /**
      * Whether to build an aggregated report at the root, or build individual reports.
      *
      * @parameter expression="${aggregate}" default-value="false"
      * @noinspection UnusedDeclaration
      */
     private boolean aggregate;
 
     /**
      * Whether the report should be generated or not.
      *
      * @return {@code true} if and only if the report should be generated.
      * @since 2.11
      */
     protected boolean isSkipped()
     {
         return false;
     }
 
     /**
      * Whether the report should be generated when there are no test results.
      *
      * @return {@code true} if and only if the report should be generated when there are no result files at all.
      * @since 2.11
      */
     protected boolean isGeneratedWhenNoResults()
     {
         return false;
     }
 
     /**
      * {@inheritDoc}
      */
     public void executeReport( Locale locale )
         throws MavenReportException
     {
         if ( isSkipped() )
         {
             return;
         }
 
         final List reportsDirectoryList = getReportsDirectories();
 
         if ( reportsDirectoryList == null )
         {
             return;
         }
 
         if ( !isGeneratedWhenNoResults() )
         {
             boolean atLeastOneDirectoryExists = false;
             for ( Iterator i = reportsDirectoryList.iterator(); i.hasNext() && !atLeastOneDirectoryExists; )
             {
                 atLeastOneDirectoryExists = SurefireReportParser.hasReportFiles( (File) i.next() );
             }
             if ( !atLeastOneDirectoryExists )
             {
                 return;
             }
         }
 
         SurefireReportGenerator report =
             new SurefireReportGenerator( reportsDirectoryList, locale, showSuccess, determineXrefLocation() );
 
         report.doGenerateReport( getBundle( locale ), getSink() );
     }
 
     public boolean canGenerateReport()
     {
         if ( isSkipped() )
         {
             return false;
         }
 
         final List reportsDirectoryList = getReportsDirectories();
 
         if ( reportsDirectoryList == null )
         {
             return false;
         }
 
         if ( !isGeneratedWhenNoResults() )
         {
             boolean atLeastOneDirectoryExists = false;
             for ( Iterator i = reportsDirectoryList.iterator(); i.hasNext() && !atLeastOneDirectoryExists; )
             {
                 atLeastOneDirectoryExists = SurefireReportParser.hasReportFiles( (File) i.next() );
             }
             if ( !atLeastOneDirectoryExists )
             {
                 return false;
             }
         }
 
         return super.canGenerateReport();
     }
 
     private List getReportsDirectories()
     {
         final List reportsDirectoryList = new ArrayList();
 
         if ( reportsDirectories != null )
         {
             reportsDirectoryList.addAll( Arrays.asList( reportsDirectories ) );
         }
         //noinspection deprecation
         if ( reportsDirectory != null )
         {
             //noinspection deprecation
             reportsDirectoryList.add( reportsDirectory );
         }
         if ( aggregate )
         {
             if ( !project.isExecutionRoot() )
             {
                 return null;
             }
             if ( reportsDirectories == null )
             {
                 for ( Iterator i = getProjectsWithoutRoot().iterator(); i.hasNext(); )
                 {
                     reportsDirectoryList.add( getSurefireReportsDirectory( (MavenProject) i.next() ) );
                 }
             }
             else
             {
                 // Multiple report directories are configured.
                 // Let's see if those directories exist in each sub-module to fix SUREFIRE-570
                 String parentBaseDir = getProject().getBasedir().getAbsolutePath();
                 for ( Iterator i = getProjectsWithoutRoot().iterator(); i.hasNext(); )
                 {
                     MavenProject subProject = (MavenProject) i.next();
                     String moduleBaseDir = subProject.getBasedir().getAbsolutePath();
                     for ( int d = 0; d < reportsDirectories.length; d++ )
                     {
                         String reportDir = reportsDirectories[d].getPath();
                         if ( reportDir.startsWith( parentBaseDir ) )
                         {
                             reportDir = reportDir.substring( parentBaseDir.length() );
                         }
                         File reportsDirectory = new File( moduleBaseDir, reportDir );
                         if ( reportsDirectory.exists() && reportsDirectory.isDirectory() )
                         {
                             getLog().debug( "Adding report dir : " + moduleBaseDir + reportDir );
                             reportsDirectoryList.add( reportsDirectory );
                         }
                     }
                 }
             }
         }
         else
         {
             if ( reportsDirectoryList.size() == 0 )
             {
 
                 reportsDirectoryList.add( getSurefireReportsDirectory( project ) );
             }
         }
         return reportsDirectoryList;
     }
 
     /**
      * Gets the default surefire reports directory for the specified project.
      * @param subProject the project to query.
      * @return the default surefire reports directory for the specified project.
      */
     protected abstract File getSurefireReportsDirectory( MavenProject subProject );
 
     private List getProjectsWithoutRoot()
     {
         List result = new ArrayList();
         for ( Iterator i = reactorProjects.iterator(); i.hasNext(); )
         {
             MavenProject subProject = (MavenProject) i.next();
             if ( !project.equals( subProject ) )
             {
                 result.add( subProject );
             }
         }
         return result;
 
     }
 
     private String determineXrefLocation()
     {
         String location = null;
 
         if ( linkXRef )
         {
             String relativePath = PathTool.getRelativePath( getOutputDirectory(), xrefLocation.getAbsolutePath() );
             if ( StringUtils.isEmpty( relativePath ) )
             {
                 relativePath = ".";
             }
             relativePath = relativePath + "/" + xrefLocation.getName();
             if ( xrefLocation.exists() )
             {
                 // XRef was already generated by manual execution of a lifecycle binding
                 location = relativePath;
             }
             else
             {
                 // Not yet generated - check if the report is on its way
                 for ( Iterator reports = project.getReportPlugins().iterator(); reports.hasNext(); )
                 {
                     ReportPlugin report = (ReportPlugin) reports.next();
 
                     String artifactId = report.getArtifactId();
                     if ( "maven-jxr-plugin".equals( artifactId ) || "jxr-maven-plugin".equals( artifactId ) )
                     {
                         location = relativePath;
                     }
                 }
             }
 
             if ( location == null )
             {
                 getLog().warn( "Unable to locate Test Source XRef to link to - DISABLED" );
             }
         }
         return location;
     }
 
     /**
      * {@inheritDoc}
      */
     public String getName( Locale locale )
     {
         return getBundle( locale ).getString( "report.surefire.name" );
     }
 
     /**
      * {@inheritDoc}
      */
     public String getDescription( Locale locale )
     {
         return getBundle( locale ).getString( "report.surefire.description" );
     }
 
     /**
      * {@inheritDoc}
      */
     protected Renderer getSiteRenderer()
     {
         return siteRenderer;
     }
 
     /**
      * {@inheritDoc}
      */
     protected MavenProject getProject()
     {
         return project;
     }
 
     /**
      * {@inheritDoc}
      */
     public abstract String getOutputName();
 
     /**
      * {@inheritDoc}
      */
     protected String getOutputDirectory()
     {
         return outputDirectory.getAbsolutePath();
     }
 
     private ResourceBundle getBundle( Locale locale )
     {
         return ResourceBundle.getBundle( "surefire-report", locale, this.getClass().getClassLoader() );
     }
 }