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package shaded.shaded.org.apache.maven.repository.internal;

/*
 * 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.
 */

import java.io.File;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import shaded.shaded.org.apache.maven.model.Repository;
import shaded.shaded.org.apache.maven.model.building.FileModelSource;
import shaded.shaded.org.apache.maven.model.building.ModelSource;
import shaded.shaded.org.apache.maven.model.resolution.InvalidRepositoryException;
import shaded.shaded.org.apache.maven.model.resolution.ModelResolver;
import shaded.shaded.org.apache.maven.model.resolution.UnresolvableModelException;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.RequestTrace;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.artifact.DefaultArtifact;
import shaded.shaded.org.eclipse.aether.impl.ArtifactResolver;
import shaded.shaded.org.eclipse.aether.impl.RemoteRepositoryManager;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.resolution.ArtifactRequest;
import org.eclipse.aether.resolution.ArtifactResolutionException;

/**
 * A model resolver to assist building of dependency POMs. This resolver gives priority to those repositories that have
 * been initially specified and repositories discovered in dependency POMs are recessively merged into the search chain.
 * 
 * @author Benjamin Bentmann
 * @see DefaultArtifactDescriptorReader
 */
class DefaultModelResolver
    implements ModelResolver
{

    private final RepositorySystemSession session;

    private final RequestTrace trace;

    private final String context;

    private List repositories;

    private final ArtifactResolver resolver;

    private final RemoteRepositoryManager remoteRepositoryManager;

    private final Set repositoryIds;

    public DefaultModelResolver( RepositorySystemSession session, RequestTrace trace, String context,
                                 ArtifactResolver resolver, RemoteRepositoryManager remoteRepositoryManager,
                                 List repositories )
    {
        this.session = session;
        this.trace = trace;
        this.context = context;
        this.resolver = resolver;
        this.remoteRepositoryManager = remoteRepositoryManager;
        this.repositories = repositories;
        this.repositoryIds = new HashSet();
    }

    private DefaultModelResolver( DefaultModelResolver original )
    {
        this.session = original.session;
        this.trace = original.trace;
        this.context = original.context;
        this.resolver = original.resolver;
        this.remoteRepositoryManager = original.remoteRepositoryManager;
        this.repositories = original.repositories;
        this.repositoryIds = new HashSet( original.repositoryIds );
    }

    public void addRepository( Repository repository )
        throws InvalidRepositoryException
    {
        if ( session.isIgnoreArtifactDescriptorRepositories() || !repositoryIds.add( repository.getId() ) )
        {
            return;
        }

        List newRepositories =
            Collections.singletonList( ArtifactDescriptorUtils.toRemoteRepository( repository ) );

        this.repositories =
            remoteRepositoryManager.aggregateRepositories( session, repositories, newRepositories, true );
    }

    public ModelResolver newCopy()
    {
        return new DefaultModelResolver( this );
    }

    public ModelSource resolveModel( String groupId, String artifactId, String version )
        throws UnresolvableModelException
    {
        Artifact pomArtifact = new DefaultArtifact( groupId, artifactId, "", "pom", version );

        try
        {
            ArtifactRequest request = new ArtifactRequest( pomArtifact, repositories, context );
            request.setTrace( trace );
            pomArtifact = resolver.resolveArtifact( session, request ).getArtifact();
        }
        catch ( ArtifactResolutionException e )
        {
            throw new UnresolvableModelException( e.getMessage(), groupId, artifactId, version, e );
        }

        File pomFile = pomArtifact.getFile();

        return new FileModelSource( pomFile );
    }

}