/*
    * 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.repository.internal;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Date;
  import java.util.LinkedHashSet;
  
  import org.apache.maven.artifact.repository.metadata.Metadata;
  import org.apache.maven.artifact.repository.metadata.Versioning;
  import org.eclipse.aether.artifact.Artifact;
  import org.eclipse.aether.artifact.ArtifactProperties;
  
  /**
   * Maven GA level metadata.
   */
  final class VersionsMetadata extends MavenMetadata {
  
      private final Artifact artifact;
  
      VersionsMetadata(Artifact artifact, Date timestamp) {
          super(createRepositoryMetadata(artifact), null, timestamp);
          this.artifact = artifact;
      }
  
      VersionsMetadata(Artifact artifact, File file, Date timestamp) {
          super(createRepositoryMetadata(artifact), file, timestamp);
          this.artifact = artifact;
      }
  
      private static Metadata createRepositoryMetadata(Artifact artifact) {
          Metadata metadata = new Metadata();
          metadata.setGroupId(artifact.getGroupId());
          metadata.setArtifactId(artifact.getArtifactId());
  
          Versioning versioning = new Versioning();
          versioning.addVersion(artifact.getBaseVersion());
          if (!artifact.isSnapshot()) {
              versioning.setRelease(artifact.getBaseVersion());
          }
          if ("maven-plugin".equals(artifact.getProperty(ArtifactProperties.TYPE, ""))) {
              versioning.setLatest(artifact.getBaseVersion());
          }
  
          metadata.setVersioning(versioning);
  
          return metadata;
      }
  
      @Override
      protected void merge(Metadata recessive) {
          Versioning versioning = metadata.getVersioning();
          versioning.setLastUpdatedTimestamp(timestamp);
  
          if (recessive.getVersioning() != null) {
              if (versioning.getLatest() == null) {
                  versioning.setLatest(recessive.getVersioning().getLatest());
              }
              if (versioning.getRelease() == null) {
                  versioning.setRelease(recessive.getVersioning().getRelease());
              }
  
              Collection<String> versions =
                      new LinkedHashSet<>(recessive.getVersioning().getVersions());
              versions.addAll(versioning.getVersions());
              versioning.setVersions(new ArrayList<>(versions));
          }
      }
  
      public Object getKey() {
          return getGroupId() + ':' + getArtifactId();
      }
  
      public static Object getKey(Artifact artifact) {
          return artifact.getGroupId() + ':' + artifact.getArtifactId();
      }
  
      public MavenMetadata setFile(File file) {
          return new VersionsMetadata(artifact, file, timestamp);
      }
  
     public String getGroupId() {
         return artifact.getGroupId();
     }
 
     public String getArtifactId() {
         return artifact.getArtifactId();
     }
 
     public String getVersion() {
         return "";
     }
 
     public Nature getNature() {
         return artifact.isSnapshot() ? Nature.RELEASE_OR_SNAPSHOT : Nature.RELEASE;
     }
 }