/*
    * 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.
   */
  package org.apache.maven.archetype.downloader;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.File;
  import java.util.List;
  
  import org.eclipse.aether.RepositorySystem;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.artifact.DefaultArtifact;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.eclipse.aether.resolution.ArtifactRequest;
  import org.eclipse.aether.resolution.ArtifactResolutionException;
  import org.eclipse.aether.resolution.ArtifactResult;
  
  /**
   * @author Jason van Zyl
   */
  @Named
  @Singleton
  public class DefaultDownloader implements Downloader {
  
      @Inject
      private RepositorySystem repositorySystem;
  
      @Override
      public File download(
              String groupId,
              String artifactId,
              String version,
              List<RemoteRepository> remoteRepositories,
              RepositorySystemSession repositorySystemSession)
              throws DownloadException {
  
          DefaultArtifact artifact = new DefaultArtifact(groupId, artifactId, "", "jar", version);
  
          ArtifactRequest request = new ArtifactRequest(artifact, remoteRepositories, "archetype");
          try {
              ArtifactResult result = repositorySystem.resolveArtifact(repositorySystemSession, request);
              return result.getArtifact().getFile();
          } catch (ArtifactResolutionException e) {
              throw new DownloadException("Could not resolve artifact " + artifactId, e);
          }
      }
  }