/*
    * 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.api.services;
  
  import java.util.Collection;
  
  import org.apache.maven.api.ArtifactCoordinate;
  import org.apache.maven.api.Session;
  import org.apache.maven.api.annotations.Experimental;
  import org.apache.maven.api.annotations.Immutable;
  import org.apache.maven.api.annotations.Nonnull;
  import org.apache.maven.api.annotations.NotThreadSafe;
  
  import static org.apache.maven.api.services.BaseRequest.nonNull;
  
  /**
   * A request for resolving an artifact.
   *
   * @since 4.0
   */
  @Experimental
  @Immutable
  public interface ArtifactResolverRequest {
      @Nonnull
      Session getSession();
  
      @Nonnull
      Collection<? extends ArtifactCoordinate> getCoordinates();
  
      @Nonnull
      static ArtifactResolverRequestBuilder builder() {
          return new ArtifactResolverRequestBuilder();
      }
  
      @Nonnull
      static ArtifactResolverRequest build(
              @Nonnull Session session, @Nonnull Collection<? extends ArtifactCoordinate> coordinates) {
          return builder()
                  .session(nonNull(session, "session cannot be null"))
                  .coordinates(nonNull(coordinates, "coordinates cannot be null"))
                  .build();
      }
  
      @NotThreadSafe
      class ArtifactResolverRequestBuilder {
          Session session;
          Collection<? extends ArtifactCoordinate> coordinates;
  
          ArtifactResolverRequestBuilder() {}
  
          @Nonnull
          public ArtifactResolverRequestBuilder session(Session session) {
              this.session = session;
              return this;
          }
  
          @Nonnull
          public ArtifactResolverRequestBuilder coordinates(Collection<? extends ArtifactCoordinate> coordinates) {
              this.coordinates = coordinates;
              return this;
          }
  
          @Nonnull
          public ArtifactResolverRequest build() {
              return new DefaultArtifactResolverRequest(session, coordinates);
          }
  
          private static class DefaultArtifactResolverRequest extends BaseRequest implements ArtifactResolverRequest {
              @Nonnull
              private final Collection<? extends ArtifactCoordinate> coordinates;
  
              DefaultArtifactResolverRequest(
                      @Nonnull Session session, @Nonnull Collection<? extends ArtifactCoordinate> coordinates) {
                  super(session);
                  this.coordinates = unmodifiable(nonNull(coordinates, "coordinates cannot be null"));
              }
  
              @Nonnull
              @Override
              public Collection<? extends ArtifactCoordinate> getCoordinates() {
                  return coordinates;
              }
          }
     }
 }