/*
    * 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.eclipse.aether.internal.impl.collect;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Iterator;
  import java.util.List;
  
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.collection.VersionFilter;
  import org.eclipse.aether.graph.Dependency;
  import org.eclipse.aether.repository.ArtifactRepository;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.eclipse.aether.resolution.VersionRangeResult;
  import org.eclipse.aether.version.Version;
  import org.eclipse.aether.version.VersionConstraint;
  
  /**
   * Default implementation of {@link VersionFilter.VersionFilterContext}.
   * Internal helper class for collector implementations.
   */
  public final class DefaultVersionFilterContext implements VersionFilter.VersionFilterContext {
      private final RepositorySystemSession session;
  
      private Dependency dependency;
  
      VersionRangeResult result;
  
      private List<Version> versions;
  
      public DefaultVersionFilterContext(RepositorySystemSession session) {
          this.session = session;
      }
  
      public void set(Dependency dependency, VersionRangeResult result) {
          this.dependency = dependency;
          this.result = result;
          this.versions = new ArrayList<>(result.getVersions());
      }
  
      public List<Version> get() {
          return new ArrayList<>(versions);
      }
  
      @Override
      public RepositorySystemSession getSession() {
          return session;
      }
  
      @Override
      public Dependency getDependency() {
          return dependency;
      }
  
      @Override
      public VersionConstraint getVersionConstraint() {
          return result.getVersionConstraint();
      }
  
      @Override
      public int getCount() {
          return versions.size();
      }
  
      @Override
      public ArtifactRepository getRepository(Version version) {
          return result.getRepository(version);
      }
  
      @Override
      public List<RemoteRepository> getRepositories() {
          return Collections.unmodifiableList(result.getRequest().getRepositories());
      }
  
      @Override
      public Iterator<Version> iterator() {
          return versions.iterator();
      }
  
      @Override
      public String toString() {
          return dependency + " " + result.getVersions();
     }
 }