package org.apache.maven.shared.release.phase;
   
   /*
    * 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.util.List;
  import java.util.Map;
  import java.util.Properties;
  
  import org.apache.maven.artifact.ArtifactUtils;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.scm.manager.NoSuchScmProviderException;
  import org.apache.maven.scm.provider.ScmProvider;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.apache.maven.scm.repository.ScmRepositoryException;
  import org.apache.maven.shared.release.ReleaseExecutionException;
  import org.apache.maven.shared.release.ReleaseResult;
  import org.apache.maven.shared.release.config.ReleaseDescriptor;
  import org.apache.maven.shared.release.env.ReleaseEnvironment;
  import org.apache.maven.shared.release.policy.PolicyException;
  import org.apache.maven.shared.release.policy.naming.NamingPolicy;
  import org.apache.maven.shared.release.policy.naming.NamingPolicyRequest;
  import org.apache.maven.shared.release.scm.ReleaseScmRepositoryException;
  import org.apache.maven.shared.release.scm.ScmRepositoryConfigurator;
  import org.apache.maven.shared.release.util.ReleaseUtil;
  import org.codehaus.plexus.component.annotations.Requirement;
  import org.codehaus.plexus.components.interactivity.Prompter;
  import org.codehaus.plexus.components.interactivity.PrompterException;
  import org.codehaus.plexus.interpolation.InterpolationException;
  import org.codehaus.plexus.interpolation.Interpolator;
  import org.codehaus.plexus.interpolation.PrefixAwareRecursionInterceptor;
  import org.codehaus.plexus.interpolation.PrefixedPropertiesValueSource;
  import org.codehaus.plexus.interpolation.RecursionInterceptor;
  import org.codehaus.plexus.interpolation.StringSearchInterpolator;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * Input any variables that were not yet configured.
   *
   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
   */
  public class InputVariablesPhase
      extends AbstractReleasePhase
  {
      /**
       * Component used to prompt for input.
       */
      @Requirement
      private Prompter prompter;
  
      /**
       * Whether this is a branch or a tag operation.
       */
      private boolean branchOperation;
  
      /**
       * Tool that gets a configured SCM repository from release configuration.
       */
      @Requirement
      private ScmRepositoryConfigurator scmRepositoryConfigurator;
  
      /**
       * Component used for custom or default naming policy
       */
      @Requirement
      private Map<String, NamingPolicy> namingPolicies;
  
      /**
       * The default naming policy to apply, if any
       */
      private String defaultNamingPolicy;
  
      void setPrompter( Prompter prompter )
      {
          this.prompter = prompter;
      }
  
      boolean isBranchOperation()
      {
          return branchOperation;
      }
  
      protected ScmProvider getScmProvider( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment )
         throws ReleaseScmRepositoryException, ReleaseExecutionException
     {
         try
         {
             ScmRepository repository =
                 scmRepositoryConfigurator.getConfiguredRepository( releaseDescriptor,
                                                                    releaseEnvironment.getSettings() );
 
             return scmRepositoryConfigurator.getRepositoryProvider( repository );
         }
         catch ( ScmRepositoryException e )
         {
             throw new ReleaseScmRepositoryException(
                 e.getMessage() + " for URL: " + releaseDescriptor.getScmSourceUrl(), e.getValidationMessages() );
         }
         catch ( NoSuchScmProviderException e )
         {
             throw new ReleaseExecutionException( "Unable to configure SCM repository: " + e.getMessage(), e );
         }
     }
 
     @Override
     public ReleaseResult execute( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                   List<MavenProject> reactorProjects )
         throws ReleaseExecutionException
     {
         ReleaseResult result = new ReleaseResult();
 
         // get the root project
         MavenProject project = ReleaseUtil.getRootProject( reactorProjects );
 
         String tag = releaseDescriptor.getScmReleaseLabel();
 
         if ( tag == null )
         {
             // Must get default version from mapped versions, as the project will be the incorrect snapshot
             String key = ArtifactUtils.versionlessKey( project.getGroupId(), project.getArtifactId() );
             String releaseVersion = releaseDescriptor.getProjectReleaseVersion( key );
             if ( releaseVersion == null )
             {
                 throw new ReleaseExecutionException( "Project tag cannot be selected if version is not yet mapped" );
             }
 
             String suggestedName;
             String scmTagNameFormat = releaseDescriptor.getScmTagNameFormat();
             if ( releaseDescriptor.getProjectNamingPolicyId() != null )
             {
                 try
                 {
                     suggestedName =
                         resolveSuggestedName( releaseDescriptor.getProjectNamingPolicyId(), releaseVersion, project );
                 }
                 catch ( PolicyException e )
                 {
                     throw new ReleaseExecutionException( e.getMessage(), e );
                 }
             }
             else if ( scmTagNameFormat != null )
             {
                 Interpolator interpolator = new StringSearchInterpolator( "@{", "}" );
                 List<String> possiblePrefixes = java.util.Arrays.asList( "project", "pom" );
                 Properties values = new Properties();
                 values.setProperty( "artifactId", project.getArtifactId() );
                 values.setProperty( "groupId", project.getGroupId() );
                 values.setProperty( "version", releaseVersion );
                 interpolator.addValueSource( new PrefixedPropertiesValueSource( possiblePrefixes, values, true ) );
                 RecursionInterceptor recursionInterceptor = new PrefixAwareRecursionInterceptor( possiblePrefixes );
                 try
                 {
                     suggestedName = interpolator.interpolate( scmTagNameFormat, recursionInterceptor );
                 }
                 catch ( InterpolationException e )
                 {
                     throw new ReleaseExecutionException(
                         "Could not interpolate specified tag name format: " + scmTagNameFormat, e );
                 }
             }
             else
             {
                 try
                 {
                     suggestedName = resolveSuggestedName( defaultNamingPolicy, releaseVersion, project );
                 }
                 catch ( PolicyException e )
                 {
                     throw new ReleaseExecutionException( e.getMessage(), e );
                 }
             }
 
             ScmProvider provider = null;
             try
             {
                 provider = getScmProvider( releaseDescriptor, releaseEnvironment );
             }
             catch ( ReleaseScmRepositoryException e )
             {
                 throw new ReleaseExecutionException(
                     "No scm provider can be found for url: " + releaseDescriptor.getScmSourceUrl(), e );
             }
 
             suggestedName = provider.sanitizeTagName( suggestedName );
 
             if ( releaseDescriptor.isInteractive() )
             {
                 try
                 {
                     if ( branchOperation )
                     {
                         tag = prompter.prompt( "What is the branch name for \"" + project.getName() + "\"? ("
                             + project.getGroupId() + ":" + project.getArtifactId() + ")" );
                         if ( StringUtils.isEmpty( tag ) )
                         {
                             throw new ReleaseExecutionException( "No branch name was given." );
                         }
                     }
                     else
                     {
                         tag = prompter.prompt( "What is the SCM release tag or label for \"" + project.getName()
                             + "\"? (" + project.getGroupId() + ":" + project.getArtifactId() + ")", suggestedName );
                     }
                 }
                 catch ( PrompterException e )
                 {
                     throw new ReleaseExecutionException( "Error reading version from input handler: " + e.getMessage(),
                                                          e );
                 }
             }
             else if ( suggestedName == null )
             {
                 if ( isBranchOperation() )
                 {
                     throw new ReleaseExecutionException( "No branch name was given." );
                 }
                 else
                 {
                     throw new ReleaseExecutionException( "No tag name was given." );
                 }
             }
             else
             {
                 tag = suggestedName;
             }
             releaseDescriptor.setScmReleaseLabel( tag );
         }
 
         result.setResultCode( ReleaseResult.SUCCESS );
 
         return result;
     }
 
     @Override
     public ReleaseResult simulate( ReleaseDescriptor releaseDescriptor, ReleaseEnvironment releaseEnvironment,
                                    List<MavenProject> reactorProjects )
         throws ReleaseExecutionException
     {
         ReleaseResult result = new ReleaseResult();
 
         // It makes no modifications, so simulate is the same as execute
         execute( releaseDescriptor, releaseEnvironment, reactorProjects );
 
         result.setResultCode( ReleaseResult.SUCCESS );
 
         return result;
     }
 
     private String resolveSuggestedName( String policyId, String version, MavenProject project )
         throws PolicyException
     {
         if ( policyId == null )
         {
             return null;
         }
 
         NamingPolicy policy = namingPolicies.get( policyId );
         if ( policy == null )
         {
             throw new PolicyException( "Policy '" + policyId + "' is unknown, available: "
                 + namingPolicies.keySet() );
         }
 
         NamingPolicyRequest request = new NamingPolicyRequest()
                         .setGroupId( project.getGroupId() )
                         .setArtifactId( project.getArtifactId() )
                         .setVersion( version );
         return policy.getName( request ).getName();
     }
 }