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package org.apache.archiva.rest.services.utils;
/*
 * 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.archiva.metadata.model.ArtifactMetadata;
import org.apache.archiva.metadata.model.maven2.MavenArtifactFacet;
import org.apache.archiva.model.ArtifactReference;
import org.apache.archiva.repository.ManagedRepositoryContent;
import org.apache.archiva.maven2.model.Artifact;
import org.apache.commons.io.FilenameUtils;

import java.io.File;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.util.Locale;

/**
 * @author Olivier Lamy
 * @since 1.4-M3
 */
public class ArtifactBuilder
{

    private ManagedRepositoryContent managedRepositoryContent;

    private ArtifactMetadata artifactMetadata;

    public ArtifactBuilder()
    {
        // no op
    }


    public ArtifactBuilder withManagedRepositoryContent( ManagedRepositoryContent managedRepositoryContent )
    {
        this.managedRepositoryContent = managedRepositoryContent;
        return this;
    }

    public ArtifactBuilder forArtifactMetadata( ArtifactMetadata artifactMetadata )
    {
        this.artifactMetadata = artifactMetadata;
        return this;
    }

    public Artifact build()
    {
        ArtifactReference ref = new ArtifactReference();
        ref.setArtifactId( artifactMetadata.getProject() );
        ref.setGroupId( artifactMetadata.getNamespace() );
        ref.setVersion( artifactMetadata.getVersion() );

        String type = null, classifier = null;

        MavenArtifactFacet facet = (MavenArtifactFacet) artifactMetadata.getFacet( MavenArtifactFacet.FACET_ID );
        if ( facet != null )
        {
            type = facet.getType();
            classifier = facet.getClassifier();
        }

        ref.setClassifier( classifier );
        ref.setType( type );
        File file = managedRepositoryContent.toFile( ref );

        String extension = FilenameUtils.getExtension( file.getName() );

        Artifact artifact = new Artifact( ref.getGroupId(), ref.getArtifactId(), ref.getVersion() );
        artifact.setRepositoryId( artifactMetadata.getRepositoryId() );
        artifact.setClassifier( classifier );
        artifact.setPackaging( type );
        artifact.setType( type );
        artifact.setFileExtension( extension );
        artifact.setPath( managedRepositoryContent.toPath( ref ) );
        // TODO: find a reusable formatter for this
        double s = this.artifactMetadata.getSize();
        String symbol = "b";
        if ( s > 1024 )
        {
            symbol = "K";
            s /= 1024;

            if ( s > 1024 )
            {
                symbol = "M";
                s /= 1024;

                if ( s > 1024 )
                {
                    symbol = "G";
                    s /= 1024;
                }
            }
        }
        artifact.setContext( managedRepositoryContent.getId() );
        DecimalFormat df = new DecimalFormat( "#,###.##", new DecimalFormatSymbols( Locale.US ) );
        artifact.setSize( df.format( s ) + " " + symbol );

        artifact.setId( ref.getArtifactId() + "-" + ref.getVersion() + "." + ref.getType() );

        return artifact;

    }


}