package org.apache.maven.plugin.deploy;

/*
 * 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.deployer.ArtifactDeploymentException;
import org.apache.maven.artifact.metadata.ArtifactMetadata;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.artifact.ProjectArtifactMetadata;

import java.io.File;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Deploys an artifact to remote repository.
 * 
 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
 * @author <a href="mailto:jdcasey@apache.org">John Casey (refactoring only)</a>
 * @version $Id$
 * @goal deploy
 * @phase deploy
 * @threadSafe
 */
public class DeployMojo
    extends AbstractDeployMojo
{

    private static final Pattern ALT_REPO_SYNTAX_PATTERN = Pattern.compile( "(.+)::(.+)::(.+)" );

    /**
     * @parameter default-value="${project}"
     * @required
     * @readonly
     */
    private MavenProject project;

    /**
     * @parameter default-value="${project.artifact}"
     * @required
     * @readonly
     */
    private Artifact artifact;

    /**
     * @parameter default-value="${project.packaging}"
     * @required
     * @readonly
     */
    private String packaging;

    /**
     * @parameter default-value="${project.file}"
     * @required
     * @readonly
     */
    private File pomFile;

    /**
     * Specifies an alternative repository to which the project artifacts should be deployed ( other
     * than those specified in &lt;distributionManagement&gt; ).
     * <br/>
     * Format: id::layout::url
     * 
     * @parameter expression="${altDeploymentRepository}"
     */
    private String altDeploymentRepository;
    
    /**
     * @parameter default-value="${project.attachedArtifacts}
     * @required
     * @readonly
     */
    private List attachedArtifacts;
    
    /**
     * Set this to 'true' to bypass artifact deploy
     *       
     * @parameter expression="${maven.deploy.skip}" default-value="false"
     * @since 2.4
     */
    private boolean skip;     

    public void execute()
        throws MojoExecutionException, MojoFailureException
    {
        if ( skip )
        {
            getLog().info( "Skipping artifact deployment" );
            return;
        }

        failIfOffline();

        ArtifactRepository repo = getDeploymentRepository();

        String protocol = repo.getProtocol();

        if ( protocol.equalsIgnoreCase( "scp" ) )
        {
            File sshFile = new File( System.getProperty( "user.home" ), ".ssh" );

            if ( !sshFile.exists() )
            {
                sshFile.mkdirs();
            }
        }

        // Deploy the POM
        boolean isPomArtifact = "pom".equals( packaging );
        if ( !isPomArtifact )
        {
            ArtifactMetadata metadata = new ProjectArtifactMetadata( artifact, pomFile );
            artifact.addMetadata( metadata );
        }

        if ( updateReleaseInfo )
        {
            artifact.setRelease( true );
        }

        try
        {
            if ( isPomArtifact )
            {
                deploy( pomFile, artifact, repo, getLocalRepository() );
            }
            else
            {
                File file = artifact.getFile();

                if ( file != null && file.isFile() )
                {
                    deploy( file, artifact, repo, getLocalRepository() );
                }
                else if ( !attachedArtifacts.isEmpty() )
                {
                    getLog().info( "No primary artifact to deploy, deploying attached artifacts instead." );

                    Artifact pomArtifact =
                        artifactFactory.createProjectArtifact( artifact.getGroupId(), artifact.getArtifactId(),
                                                               artifact.getBaseVersion() );
                    pomArtifact.setFile( pomFile );
                    if ( updateReleaseInfo )
                    {
                        pomArtifact.setRelease( true );
                    }

                    deploy( pomFile, pomArtifact, repo, getLocalRepository() );

                    // propagate the timestamped version to the main artifact for the attached artifacts to pick it up
                    artifact.setResolvedVersion( pomArtifact.getVersion() );
                }
                else
                {
                    String message = "The packaging for this project did not assign a file to the build artifact";
                    throw new MojoExecutionException( message );
                }
            }

            for ( Iterator i = attachedArtifacts.iterator(); i.hasNext(); )
            {
                Artifact attached = ( Artifact ) i.next();

                deploy( attached.getFile(), attached, repo, getLocalRepository() );
            }
        }
        catch ( ArtifactDeploymentException e )
        {
            throw new MojoExecutionException( e.getMessage(), e );
        }
    }

    private ArtifactRepository getDeploymentRepository()
        throws MojoExecutionException, MojoFailureException
    {
        ArtifactRepository repo = null;

        if ( altDeploymentRepository != null )
        {
            getLog().info( "Using alternate deployment repository " + altDeploymentRepository );

            Matcher matcher = ALT_REPO_SYNTAX_PATTERN.matcher( altDeploymentRepository );

            if ( !matcher.matches() )
            {
                throw new MojoFailureException( altDeploymentRepository, "Invalid syntax for repository.",
                                                "Invalid syntax for alternative repository. Use \"id::layout::url\"." );
            }
            else
            {
                String id = matcher.group( 1 ).trim();
                String layout = matcher.group( 2 ).trim();
                String url = matcher.group( 3 ).trim();

                ArtifactRepositoryLayout repoLayout = getLayout( layout );

                repo = repositoryFactory.createDeploymentArtifactRepository( id, url, repoLayout, true );
            }
        }
        
        if ( repo == null )
        {
            repo = project.getDistributionManagementArtifactRepository();
        }

        if ( repo == null )
        {
            String msg = "Deployment failed: repository element was not specified in the POM inside"
                + " distributionManagement element or in -DaltDeploymentRepository=id::layout::url parameter";

            throw new MojoExecutionException( msg );
        }

        return repo;
    }

}