package org.apache.maven.plugin.gpg;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *  http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.Reader;
  import java.io.Writer;
  import java.util.Map;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.deployer.ArtifactDeployer;
  import org.apache.maven.artifact.deployer.ArtifactDeploymentException;
  import org.apache.maven.artifact.factory.ArtifactFactory;
  import org.apache.maven.artifact.metadata.ArtifactMetadata;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.artifact.repository.ArtifactRepositoryFactory;
  import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
  import org.apache.maven.model.Model;
  import org.apache.maven.model.Parent;
  import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
  import org.apache.maven.model.io.xpp3.MavenXpp3Writer;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.project.artifact.ProjectArtifactMetadata;
  import org.apache.maven.project.validation.ModelValidationResult;
  import org.apache.maven.project.validation.ModelValidator;
  import org.codehaus.plexus.util.IOUtil;
  import org.codehaus.plexus.util.ReaderFactory;
  import org.codehaus.plexus.util.StringUtils;
  import org.codehaus.plexus.util.WriterFactory;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  
  /**
   * Signs artifacts and installs the artifact in the remote repository.
   * 
   * @author Daniel Kulp
   * @goal sign-and-deploy-file
   * @requiresProject false
   * @threadSafe
   * @since 1.0-beta-4
   */
  public class SignAndDeployFileMojo
      extends AbstractGpgMojo
  {
  
      /**
       * The directory where to store signature files.
       * 
       * @parameter expression="${gpg.ascDirectory}"
       */
      private File ascDirectory;
  
      /**
       * Flag whether Maven is currently in online/offline mode.
       * 
       * @parameter default-value="${settings.offline}"
       * @readonly
       */
      private boolean offline;
  
      /**
       * GroupId of the artifact to be deployed. Retrieved from POM file if specified.
       * 
       * @parameter expression="${groupId}"
       */
      private String groupId;
  
      /**
       * ArtifactId of the artifact to be deployed. Retrieved from POM file if specified.
       * 
       * @parameter expression="${artifactId}"
       */
      private String artifactId;
  
      /**
       * Version of the artifact to be deployed. Retrieved from POM file if specified.
       * 
       * @parameter expression="${version}"
       */
      private String version;
 
     /**
      * Type of the artifact to be deployed. Retrieved from POM file if specified.
      * 
      * @parameter expression="${packaging}"
      */
     private String packaging;
 
     /**
      * Add classifier to the artifact
      * 
      * @parameter expression="${classifier}";
      */
     private String classifier;
 
     /**
      * Description passed to a generated POM file (in case of generatePom=true).
      * 
      * @parameter expression="${generatePom.description}"
      */
     private String description;
 
     /**
      * File to be deployed.
      * 
      * @parameter expression="${file}"
      * @required
      */
     private File file;
 
     /**
      * Location of an existing POM file to be deployed alongside the main artifact, given by the ${file} parameter.
      * 
      * @parameter expression="${pomFile}"
      */
     private File pomFile;
 
     /**
      * Upload a POM for this artifact. Will generate a default POM if none is supplied with the pomFile argument.
      * 
      * @parameter expression="${generatePom}" default-value="true"
      */
     private boolean generatePom;
 
     /**
      * Whether to deploy snapshots with a unique version or not.
      * 
      * @parameter expression="${uniqueVersion}" default-value="true"
      */
     private boolean uniqueVersion;
 
     /**
      * URL where the artifact will be deployed. <br/>
      * ie ( file:///C:/m2-repo or scp://host.com/path/to/repo )
      * 
      * @parameter expression="${url}"
      * @required
      */
     private String url;
 
     /**
      * Server Id to map on the &lt;id&gt; under &lt;server&gt; section of <code>settings.xml</code>. In most cases, this
      * parameter will be required for authentication.
      * 
      * @parameter expression="${repositoryId}" default-value="remote-repository"
      * @required
      */
     private String repositoryId;
 
     /**
      * The type of remote repository layout to deploy to. Try <i>legacy</i> for a Maven 1.x-style repository layout.
      * 
      * @parameter expression="${repositoryLayout}" default-value="default"
      */
     private String repositoryLayout;
 
     /**
      * @component
      */
     private ArtifactDeployer deployer;
 
     /**
      * @parameter default-value="${localRepository}"
      * @required
      * @readonly
      */
     private ArtifactRepository localRepository;
 
     /**
      * Map that contains the layouts.
      * 
      * @component role="org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout"
      */
     private Map repositoryLayouts;
 
     /**
      * Component used to create an artifact
      * 
      * @component
      */
     private ArtifactFactory artifactFactory;
 
     /**
      * Component used to create a repository
      * 
      * @component
      */
     private ArtifactRepositoryFactory repositoryFactory;
 
     /**
      * The component used to validate the user-supplied artifact coordinates.
      * 
      * @component
      */
     private ModelValidator modelValidator;
 
     private void initProperties()
         throws MojoExecutionException
     {
         // Process the supplied POM (if there is one)
         if ( pomFile != null )
         {
             generatePom = false;
 
             Model model = readModel( pomFile );
 
             processModel( model );
         }
     }
 
     public void execute()
         throws MojoExecutionException, MojoFailureException
     {
         GpgSigner signer = newSigner( null );
         signer.setOutputDirectory( ascDirectory );
         signer.setBaseDirectory( new File( "" ).getAbsoluteFile() );
 
         if ( offline )
         {
             throw new MojoFailureException( "Cannot deploy artifacts when Maven is in offline mode" );
         }
 
         initProperties();
 
         validateArtifactInformation();
 
         if ( !file.exists() )
         {
             throw new MojoFailureException( file.getPath() + " not found." );
         }
 
         ArtifactRepositoryLayout layout = (ArtifactRepositoryLayout) repositoryLayouts.get( repositoryLayout );
         if ( layout == null )
         {
             throw new MojoFailureException( "Invalid repository layout: " + repositoryLayout );
         }
 
         ArtifactRepository deploymentRepository =
             repositoryFactory.createDeploymentArtifactRepository( repositoryId, url, layout, uniqueVersion );
 
         if ( StringUtils.isEmpty( deploymentRepository.getProtocol() ) )
         {
             throw new MojoFailureException( "No transfer protocol found." );
         }
 
         Artifact artifact =
             artifactFactory.createArtifactWithClassifier( groupId, artifactId, version, packaging, classifier );
 
         if ( file.equals( getLocalRepoFile( artifact ) ) )
         {
             throw new MojoFailureException( "Cannot deploy artifact from the local repository: " + file );
         }
 
         File fileSig = signer.generateSignatureForArtifact( file );
         ArtifactMetadata metadata = new AscArtifactMetadata( artifact, fileSig, false );
         artifact.addMetadata( metadata );
 
         if ( !"pom".equals( packaging ) )
         {
             if ( pomFile == null && generatePom )
             {
                 pomFile = generatePomFile();
             }
             if ( pomFile != null )
             {
                 metadata = new ProjectArtifactMetadata( artifact, pomFile );
                 artifact.addMetadata( metadata );
 
                 fileSig = signer.generateSignatureForArtifact( pomFile );
                 metadata = new AscArtifactMetadata( artifact, fileSig, true );
                 artifact.addMetadata( metadata );
             }
         }
 
         try
         {
             deployer.deploy( file, artifact, deploymentRepository, localRepository );
         }
         catch ( ArtifactDeploymentException e )
         {
             throw new MojoExecutionException( e.getMessage(), e );
         }
     }
 
     /**
      * Gets the path of the specified artifact within the local repository. Note that the returned path need not exist
      * (yet).
      * 
      * @param artifact The artifact whose local repo path should be determined, must not be <code>null</code>.
      * @return The absolute path to the artifact when installed, never <code>null</code>.
      */
     private File getLocalRepoFile( Artifact artifact )
     {
         String path = localRepository.pathOf( artifact );
         return new File( localRepository.getBasedir(), path );
     }
 
     /**
      * Process the supplied pomFile to get groupId, artifactId, version, and packaging
      *
      * @param model The POM to extract missing artifact coordinates from, must not be <code>null</code>.
      */
     private void processModel( Model model )
     {
         Parent parent = model.getParent();
 
         if ( this.groupId == null )
         {
             this.groupId = model.getGroupId();
             if ( this.groupId == null && parent != null )
             {
                 this.groupId = parent.getGroupId();
             }
         }
         if ( this.artifactId == null )
         {
             this.artifactId = model.getArtifactId();
         }
         if ( this.version == null )
         {
             this.version = model.getVersion();
             if ( this.version == null && parent != null )
             {
                 this.version = parent.getVersion();
             }
         }
         if ( this.packaging == null )
         {
             this.packaging = model.getPackaging();
         }
     }
 
     /**
      * Extract the model from the specified POM file.
      * 
      * @param pomFile The path of the POM file to parse, must not be <code>null</code>.
      * @return The model from the POM file, never <code>null</code>.
      * @throws MojoExecutionException If the file doesn't exist of cannot be read.
      */
     private Model readModel( File pomFile )
         throws MojoExecutionException
     {
         Reader reader = null;
         try
         {
             reader = ReaderFactory.newXmlReader( pomFile );
             return new MavenXpp3Reader().read( reader );
         }
         catch ( FileNotFoundException e )
         {
             throw new MojoExecutionException( "POM not found " + pomFile, e );
         }
         catch ( IOException e )
         {
             throw new MojoExecutionException( "Error reading POM " + pomFile, e );
         }
         catch ( XmlPullParserException e )
         {
             throw new MojoExecutionException( "Error parsing POM " + pomFile, e );
         }
         finally
         {
             IOUtil.close( reader );
         }
     }
 
     /**
      * Generates a minimal POM from the user-supplied artifact information.
      * 
      * @return The path to the generated POM file, never <code>null</code>.
      * @throws MojoExecutionException If the generation failed.
      */
     private File generatePomFile()
         throws MojoExecutionException
     {
         Model model = generateModel();
 
         Writer fw = null;
         try
         {
             File tempFile = File.createTempFile( "mvndeploy", ".pom" );
             tempFile.deleteOnExit();
 
             fw = WriterFactory.newXmlWriter( tempFile );
             new MavenXpp3Writer().write( fw, model );
 
             return tempFile;
         }
         catch ( IOException e )
         {
             throw new MojoExecutionException( "Error writing temporary pom file: " + e.getMessage(), e );
         }
         finally
         {
             IOUtil.close( fw );
         }
     }
 
     /**
      * Generates a minimal model from the user-supplied artifact information.
      * 
      * @return The generated model, never <code>null</code>.
      */
     private Model generateModel()
     {
         Model model = new Model();
 
         model.setModelVersion( "4.0.0" );
 
         model.setGroupId( groupId );
         model.setArtifactId( artifactId );
         model.setVersion( version );
         model.setPackaging( packaging );
 
         model.setDescription( description );
 
         return model;
     }
 
     /**
      * Validates the user-supplied artifact information.
      * 
      * @throws MojoFailureException If any artifact coordinate is invalid.
      */
     private void validateArtifactInformation()
         throws MojoFailureException
     {
         Model model = generateModel();
 
         ModelValidationResult result = modelValidator.validate( model );
 
         if ( result.getMessageCount() > 0 )
         {
             throw new MojoFailureException( "The artifact information is incomplete or not valid:\n"
                 + result.render( "  " ) );
         }
     }
 
 }