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.shared.transfer.artifact.ArtifactCoordinate;
  import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolverException;
  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;
  
  /**
   * 
   */
  class Maven31ArtifactResolver
      implements MavenArtifactResolver
  {
      private final RepositorySystem repositorySystem;
      
      private final List<RemoteRepository> aetherRepositories;
      
      private final RepositorySystemSession session;
  
      Maven31ArtifactResolver( RepositorySystem repositorySystem, List<RemoteRepository> aetherRepositories,
                                      RepositorySystemSession session )
      {
          this.repositorySystem = repositorySystem;
          this.aetherRepositories = aetherRepositories;
          this.session = session;
      }
  
      @Override
      public org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult resolveArtifact(
              org.apache.maven.artifact.Artifact mavenArtifact ) throws ArtifactResolverException
      {
          Artifact aetherArtifact = Invoker.invoke( RepositoryUtils.class, "toArtifact",
                  org.apache.maven.artifact.Artifact.class, mavenArtifact );
  
          return resolveArtifact( aetherArtifact );
      }
  
      @Override
      // CHECKSTYLE_OFF: LineLength
      public org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult resolveArtifact( ArtifactCoordinate coordinate )
                                                                                          throws ArtifactResolverException
      // CHECKSTYLE_ON: LineLength
      {
          Artifact aetherArtifact =
              new DefaultArtifact( coordinate.getGroupId(), coordinate.getArtifactId(), coordinate.getClassifier(),
                                   coordinate.getExtension(), coordinate.getVersion() );
  
          return resolveArtifact( aetherArtifact );
      }
  
      // CHECKSTYLE_OFF: LineLength
      private org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult resolveArtifact( Artifact aetherArtifact )
                                                                                           throws ArtifactResolverException
      // CHECKSTYLE_ON: LineLength
      {
          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 | ArtifactResolutionException e )
         {
             throw new ArtifactResolverException( e.getMessage(), e );
         }
     }
 
 }