package org.apache.maven.shared.transfer.artifact.resolve.internal;
   
   /*
    * 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 org.apache.maven.RepositoryUtils;
  import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
  import org.apache.maven.project.ProjectBuildingRequest;
  import org.apache.maven.shared.transfer.artifact.ArtifactCoordinate;
  import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolver;
  import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolverException;
  import org.codehaus.plexus.component.annotations.Component;
  import org.codehaus.plexus.component.annotations.Requirement;
  import org.eclipse.aether.RepositorySystem;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.artifact.Artifact;
  import org.eclipse.aether.artifact.DefaultArtifact;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.eclipse.aether.resolution.ArtifactDescriptorException;
  import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
  import org.eclipse.aether.resolution.ArtifactDescriptorResult;
  import org.eclipse.aether.resolution.ArtifactRequest;
  import org.eclipse.aether.resolution.ArtifactResolutionException;
  
  /**
   * 
   */
  @Component( role = ArtifactResolver.class, hint = "maven31" )
  class Maven31ArtifactResolver
      implements ArtifactResolver
  {
      @Requirement
      private RepositorySystem repositorySystem;
  
      @Requirement
      private ArtifactHandlerManager artifactHandlerManager;
  
      @Override
      // CHECKSTYLE_OFF: LineLength
      public org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult resolveArtifact( ProjectBuildingRequest buildingRequest,
                                                                                      org.apache.maven.artifact.Artifact mavenArtifact )
                                                                                          throws ArtifactResolverException
      // CHECKSTYLE_ON: LineLength
      {
          Artifact aetherArtifact = (Artifact) Invoker.invoke( RepositoryUtils.class, "toArtifact",
                                                               org.apache.maven.artifact.Artifact.class, mavenArtifact );
  
          return resolveArtifact( buildingRequest, aetherArtifact );
      }
  
      @Override
      // CHECKSTYLE_OFF: LineLength
      public org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult resolveArtifact( ProjectBuildingRequest buildingRequest,
                                                                                      ArtifactCoordinate coordinate )
                                                                                          throws ArtifactResolverException
      // CHECKSTYLE_ON: LineLength
      {
          Artifact aetherArtifact =
              new DefaultArtifact( coordinate.getGroupId(), coordinate.getArtifactId(), coordinate.getClassifier(),
                                   coordinate.getExtension(), coordinate.getVersion() );
  
          return resolveArtifact( buildingRequest, aetherArtifact );
      }
  
      // CHECKSTYLE_OFF: LineLength
      private org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult resolveArtifact( ProjectBuildingRequest buildingRequest,
                                                                                       Artifact aetherArtifact )
                                                                                           throws ArtifactResolverException
      // CHECKSTYLE_ON: LineLength
      {
          @SuppressWarnings( "unchecked" )
          List<RemoteRepository> aetherRepositories =
              (List<RemoteRepository>) Invoker.invoke( RepositoryUtils.class, "toRepos", List.class,
                                                       buildingRequest.getRemoteRepositories() );
  
          RepositorySystemSession session =
              (RepositorySystemSession) Invoker.invoke( buildingRequest, "getRepositorySession" );
  
          try
          {
              // use descriptor to respect relocation
             ArtifactDescriptorRequest descriptorRequest =
                 new ArtifactDescriptorRequest( aetherArtifact, aetherRepositories, null );
 
             ArtifactDescriptorResult descriptorResult =
                 repositorySystem.readArtifactDescriptor( session, descriptorRequest );
 
             ArtifactRequest request = new ArtifactRequest( descriptorResult.getArtifact(), aetherRepositories, null );
 
             return new Maven31ArtifactResult( repositorySystem.resolveArtifact( session, request ) );
         }
         catch ( ArtifactDescriptorException e )
         {
             throw new ArtifactResolverException( e.getMessage(), e );
         }
         catch ( ArtifactResolutionException e )
         {
             throw new ArtifactResolverException( e.getMessage(), e );
         }
     }
 
 }