/*
    * 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.cli.transfer;
  
  import java.io.File;
  import java.util.Objects;
  
  import org.eclipse.aether.transfer.TransferResource;
  import org.eclipse.sisu.Nullable;
  
  /**
   * Immutable identifier of a {@link TransferResource}.
   * The {@link TransferResource} is not immutable and does not implement {@code Objects#equals} and {@code Objects#hashCode} methods,
   * making it not very suitable for usage in collections.
   */
  final class TransferResourceIdentifier {
  
      private final String repositoryId;
      private final String repositoryUrl;
      private final String resourceName;
  
      @Nullable
      private final File file;
  
      private TransferResourceIdentifier(
              String repositoryId, String repositoryUrl, String resourceName, @Nullable File file) {
          this.repositoryId = repositoryId;
          this.repositoryUrl = repositoryUrl;
          this.resourceName = resourceName;
          this.file = file;
      }
  
      TransferResourceIdentifier(TransferResource resource) {
          this(resource.getRepositoryId(), resource.getRepositoryUrl(), resource.getResourceName(), resource.getFile());
      }
  
      @Override
      public boolean equals(Object obj) {
          if (obj == this) {
              return true;
          }
  
          if (obj == null || obj.getClass() != this.getClass()) {
              return false;
          }
  
          TransferResourceIdentifier that = (TransferResourceIdentifier) obj;
          return Objects.equals(this.repositoryId, that.repositoryId)
                  && Objects.equals(this.repositoryUrl, that.repositoryUrl)
                  && Objects.equals(this.resourceName, that.resourceName)
                  && Objects.equals(this.file, that.file);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(repositoryId, repositoryUrl, resourceName, file);
      }
  }