package org.apache.axis2.maven2.aar;

/*
 * Copyright 2006 The Apache Software Foundation.
 *
 * Licensed 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.io.IOException;

import org.apache.maven.archiver.MavenArchiveConfiguration;
import org.apache.maven.archiver.MavenArchiver;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.DependencyResolutionRequiredException;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProjectHelper;
import org.codehaus.plexus.archiver.ArchiverException;
import org.codehaus.plexus.archiver.jar.JarArchiver;
import org.codehaus.plexus.archiver.jar.ManifestException;

/**
 * Build a aar.
 * 
 * @goal aar
 * @phase package
 * @requiresDependencyResolution runtime
 */
public class AarMojo extends AbstractAarMojo
{
    /**
     * The directory for the generated aar.
     * 
     * @parameter expression="${project.build.directory}"
     * @required
     */
    private String outputDirectory;

    /**
     * The name of the generated aar.
     * 
     * @parameter expression="${project.build.finalName}"
     * @required
     */
    private String aarName;

    /**
     * The Jar archiver.
     * 
     * @parameter expression="${component.org.codehaus.plexus.archiver.Archiver#jar}"
     * @required
     */
    private JarArchiver jarArchiver;

    /**
     * The maven archive configuration to use.
     * 
     * @parameter
     */
    private MavenArchiveConfiguration archive = new MavenArchiveConfiguration();

    /**
     * Classifier to add to the artifact generated. If given, the artifact will be an attachment instead.
     * 
     * @parameter
     */
    private String classifier;

    /**
     * Whether this is the main artifact being built. Set to <code>false</code> if you don't want to install or deploy
     * it to the local repository instead of the default one in an execution.
     * 
     * @parameter expression="${primaryArtifact}" default-value="true"
     */
    private boolean primaryArtifact;

    /**
     * @component
     */
    private MavenProjectHelper projectHelper;

    /**
     * Executes the AarMojo on the current project.
     * 
     * @throws MojoExecutionException
     *             if an error occured while building the webapp
     */
    public void execute() throws MojoExecutionException
    {

        File aarFile = new File( outputDirectory, aarName + ".aar" );

        try
        {
            performPackaging( aarFile );
        }
        catch ( Exception e )
        {
            throw new MojoExecutionException( "Error assembling aar", e );
        }
    }

    /**
     * Generates the aar.
     * 
     * @param aarFile
     *            the target aar file
     * @throws IOException
     * @throws ArchiverException
     * @throws ManifestException
     * @throws DependencyResolutionRequiredException
     */
    private void performPackaging( File aarFile )
        throws IOException, ArchiverException, ManifestException, DependencyResolutionRequiredException,
        MojoExecutionException
    {

        buildExplodedAar( );

        // generate aar file
        getLog().info( "Generating aar " + aarFile.getAbsolutePath() );
        MavenArchiver archiver = new MavenArchiver();
        archiver.setArchiver( jarArchiver );
        archiver.setOutputFile( aarFile );
        jarArchiver.addDirectory( aarDirectory );

        // create archive
        archiver.createArchive( project, archive );

        if ( classifier != null )
        {
            projectHelper.attachArtifact( project, "aar", classifier, aarFile );
        }
        else
        {
            Artifact artifact = project.getArtifact();
            if ( primaryArtifact )
            {
                artifact.setFile( aarFile );
            }
            else if ( artifact.getFile() == null || artifact.getFile().isDirectory() )
            {
                artifact.setFile( aarFile );
            }
            else
            {
                projectHelper.attachArtifact( project, "aar", aarFile );
            }
        }
    }
}