/*
    * 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.plugins.dependency.resolvers;
  
  import java.util.List;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import org.apache.maven.artifact.ArtifactUtils;
  import org.apache.maven.model.Dependency;
  import org.apache.maven.plugin.logging.Log;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.shared.artifact.filter.resolve.AbstractFilter;
  import org.apache.maven.shared.artifact.filter.resolve.Node;
  import org.apache.maven.shared.artifact.filter.resolve.TransformableFilter;
  
  /**
   * {@link TransformableFilter} implementation that excludes artifacts found in the Reactor.
   *
   * @author Maarten Mulders
   */
  public class ExcludeReactorProjectsDependencyFilter extends AbstractFilter {
      private final Log log;
      private final Set<String> reactorArtifactKeys;
  
      public ExcludeReactorProjectsDependencyFilter(final List<MavenProject> reactorProjects, final Log log) {
          this.log = log;
          this.reactorArtifactKeys = reactorProjects.stream()
                  .map(project -> ArtifactUtils.key(project.getArtifact()))
                  .collect(Collectors.toSet());
      }
  
      @Override
      public boolean accept(final Node node, final List<Node> parents) {
          final Dependency dependency = node.getDependency();
          if (dependency != null) {
              final String dependencyArtifactKey =
                      ArtifactUtils.key(dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion());
  
              final boolean result = isDependencyArtifactInReactor(dependencyArtifactKey);
  
              if (log.isDebugEnabled() && result) {
                  log.debug("Skipped dependency " + dependencyArtifactKey + " because it is present in the reactor");
              }
  
              return !result;
          }
          return true;
      }
  
      private boolean isDependencyArtifactInReactor(final String dependencyArtifactKey) {
          for (final String reactorArtifactKey : this.reactorArtifactKeys) {
              // This check only includes GAV. Should we take a look at the types, too?
              if (reactorArtifactKey.equals(dependencyArtifactKey)) {
                  return true;
              }
          }
          return false;
      }
  }