package org.apache.maven.artifact.repository.layout;

/*
 * 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 org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.handler.ArtifactHandler;
import org.apache.maven.artifact.metadata.ArtifactMetadata;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.codehaus.plexus.component.annotations.Component;

/**
 * @author jdcasey
 */
@Component( role = ArtifactRepositoryLayout.class, hint = "default" )
public class DefaultRepositoryLayout
    implements ArtifactRepositoryLayout
{
    private static final char PATH_SEPARATOR = '/';

    private static final char GROUP_SEPARATOR = '.';

    private static final char ARTIFACT_SEPARATOR = '-';

    public String getId()
    {
        return "default";
    }

    public String pathOf( Artifact artifact )
    {
        ArtifactHandler artifactHandler = artifact.getArtifactHandler();

        StringBuilder path = new StringBuilder( 128 );

        path.append( formatAsDirectory( artifact.getGroupId() ) ).append( PATH_SEPARATOR );
        path.append( artifact.getArtifactId() ).append( PATH_SEPARATOR );
        path.append( artifact.getBaseVersion() ).append( PATH_SEPARATOR );
        path.append( artifact.getArtifactId() ).append( ARTIFACT_SEPARATOR ).append( artifact.getVersion() );

        if ( artifact.hasClassifier() )
        {
            path.append( ARTIFACT_SEPARATOR ).append( artifact.getClassifier() );
        }

        if ( artifactHandler.getExtension() != null && artifactHandler.getExtension().length() > 0 )
        {
            path.append( GROUP_SEPARATOR ).append( artifactHandler.getExtension() );
        }

        return path.toString();
    }

    public String pathOfLocalRepositoryMetadata( ArtifactMetadata metadata, ArtifactRepository repository )
    {
        return pathOfRepositoryMetadata( metadata, metadata.getLocalFilename( repository ) );
    }

    private String pathOfRepositoryMetadata( ArtifactMetadata metadata,
                                             String filename )
    {
        StringBuilder path = new StringBuilder( 128 );

        path.append( formatAsDirectory( metadata.getGroupId() ) ).append( PATH_SEPARATOR );
        if ( !metadata.storedInGroupDirectory() )
        {
            path.append( metadata.getArtifactId() ).append( PATH_SEPARATOR );

            if ( metadata.storedInArtifactVersionDirectory() )
            {
                path.append( metadata.getBaseVersion() ).append( PATH_SEPARATOR );
            }
        }

        path.append( filename );

        return path.toString();
    }

    public String pathOfRemoteRepositoryMetadata( ArtifactMetadata metadata )
    {
        return pathOfRepositoryMetadata( metadata, metadata.getRemoteFilename() );
    }

    private String formatAsDirectory( String directory )
    {
        return directory.replace( GROUP_SEPARATOR, PATH_SEPARATOR );
    }

    @Override
    public String toString()
    {
        return getId();
    }

}
