/*
    * 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.project;
  
  import java.io.FileNotFoundException;
  import java.net.URISyntaxException;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.List;
  
  import org.codehaus.plexus.component.annotations.Component;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.artifact.Artifact;
  import org.eclipse.aether.impl.ArtifactResolver;
  import org.eclipse.aether.resolution.ArtifactRequest;
  import org.eclipse.aether.resolution.ArtifactResolutionException;
  import org.eclipse.aether.resolution.ArtifactResult;
  import org.eclipse.aether.transfer.ArtifactNotFoundException;
  
  /**
   * @author Benjamin Bentmann
   */
  @Component(role = ArtifactResolver.class, hint = "classpath")
  public class ClasspathArtifactResolver implements ArtifactResolver {
  
      public List<ArtifactResult> resolveArtifacts(
              RepositorySystemSession session, Collection<? extends ArtifactRequest> requests)
              throws ArtifactResolutionException {
          List<ArtifactResult> results = new ArrayList<>();
  
          for (ArtifactRequest request : requests) {
              ArtifactResult result = new ArtifactResult(request);
              results.add(result);
  
              Artifact artifact = request.getArtifact();
              if ("maven-test".equals(artifact.getGroupId())) {
                  String scope = artifact.getArtifactId().substring("scope-".length());
  
                  try {
                      artifact = artifact.setFile(ProjectClasspathTest.getFileForClasspathResource(
                              ProjectClasspathTest.dir + "transitive-" + scope + "-dep.xml"));
                      result.setArtifact(artifact);
                  } catch (FileNotFoundException | URISyntaxException e) {
                      throw new IllegalStateException("Missing test POM for " + artifact, e);
                  }
              } else {
                  result.addException(new ArtifactNotFoundException(artifact, null));
                  throw new ArtifactResolutionException(results);
              }
          }
  
          return results;
      }
  
      public ArtifactResult resolveArtifact(RepositorySystemSession session, ArtifactRequest request)
              throws ArtifactResolutionException {
          return resolveArtifacts(session, Collections.singleton(request)).get(0);
      }
  }