/*
    * 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.gpg;
  
  import java.io.File;
  import java.io.IOException;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.metadata.AbstractArtifactMetadata;
  import org.apache.maven.artifact.metadata.ArtifactMetadata;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.artifact.repository.metadata.RepositoryMetadataStoreException;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * @author dkulp
   *
   */
  public class AscArtifactMetadata extends AbstractArtifactMetadata
          implements org.apache.maven.shared.transfer.metadata.ArtifactMetadata {
  
      private final File file;
  
      private final boolean isPom;
  
      public AscArtifactMetadata(Artifact artifact, File file, boolean isPom) {
          super(artifact);
          this.file = file;
          this.isPom = isPom;
      }
  
      @Override
      public String getBaseVersion() {
          return artifact.getBaseVersion();
      }
  
      @Override
      public Object getKey() {
          return "gpg signature " + artifact.getGroupId() + ":" + artifact.getArtifactId() + ":" + artifact.getType()
                  + ":" + artifact.getClassifier() + (isPom ? ":pom" : "");
      }
  
      private String getFilename() {
          StringBuilder buf = new StringBuilder(128);
          buf.append(getArtifactId());
          buf.append("-").append(artifact.getVersion());
          if (isPom) {
              buf.append(".pom");
          } else {
              if (artifact.getClassifier() != null && !"".equals(artifact.getClassifier())) {
                  buf.append("-").append(artifact.getClassifier());
              }
              buf.append(".").append(artifact.getArtifactHandler().getExtension());
          }
          buf.append(".asc");
          return buf.toString();
      }
  
      @Override
      public String getLocalFilename(ArtifactRepository repository) {
          return getFilename();
      }
  
      @Override
      public String getRemoteFilename() {
          return getFilename();
      }
  
      @Override
      public void merge(ArtifactMetadata metadata) {
          merge((AscArtifactMetadata) metadata);
      }
  
      @Override
      public void merge(org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata) {
          merge((AscArtifactMetadata) metadata);
      }
  
      private void merge(AscArtifactMetadata metadata) {
          if (!metadata.file.equals(file)) {
              throw new IllegalStateException("Cannot add two different pieces of metadata for: " + getKey());
          }
      }
 
     @Override
     public void storeInLocalRepository(ArtifactRepository localRepository, ArtifactRepository remoteRepository)
             throws RepositoryMetadataStoreException {
         File destination = new File(
                 localRepository.getBasedir(), localRepository.pathOfLocalRepositoryMetadata(this, remoteRepository));
 
         try {
             FileUtils.copyFile(file, destination);
         } catch (IOException e) {
             throw new RepositoryMetadataStoreException("Error copying ASC to the local repository.", e);
         }
     }
 
     @Override
     public boolean storedInArtifactVersionDirectory() {
         return true;
     }
 
     @Override
     public String toString() {
         return getFilename();
     }
 
     @Override
     public File getFile() {
         return file;
     }
 }