/*
 * 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.resolver.examples;

import org.apache.maven.resolver.examples.util.Booter;
import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.RepositorySystemSession.CloseableSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.artifact.DefaultArtifact;
import org.eclipse.aether.graph.Dependency;
import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
import org.eclipse.aether.resolution.ArtifactDescriptorResult;

/**
 * Determines the direct dependencies of an artifact as declared in its artifact descriptor (POM).
 */
public class GetDirectDependencies {

    /**
     * Main.
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        System.out.println("------------------------------------------------------------");
        System.out.println(GetDirectDependencies.class.getSimpleName());

        try (RepositorySystem system = Booter.newRepositorySystem(Booter.selectFactory(args));
                CloseableSession session =
                        Booter.newRepositorySystemSession(system).build()) {
            Artifact artifact = new DefaultArtifact("org.apache.maven.resolver:maven-resolver-impl:1.3.3");

            ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest();
            descriptorRequest.setArtifact(artifact);
            descriptorRequest.setRepositories(Booter.newRepositories(system, session));

            ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor(session, descriptorRequest);

            for (Dependency dependency : descriptorResult.getDependencies()) {
                System.out.println(dependency);
            }
        }
    }
}
