/*
    * 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.
   */
  package org.apache.maven.scm.plugin;
  
  import javax.inject.Inject;
  
  import java.io.File;
  import java.io.IOException;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.command.export.ExportScmResult;
  import org.apache.maven.scm.manager.ScmManager;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.apache.maven.settings.crypto.SettingsDecrypter;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * Get a fresh exported copy of the latest source from the configured scm url.
   *
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   */
  @Mojo(name = "export", requiresProject = false)
  public class ExportMojo extends AbstractScmMojo {
      /**
       * The version type (branch/tag/revision) of scmVersion.
       */
      @Parameter(property = "scmVersionType")
      private String scmVersionType;
  
      /**
       * The version (revision number/branch name/tag name).
       */
      @Parameter(property = "scmVersion")
      private String scmVersion;
  
      /**
       * The directory to export the sources to.
       */
      @Parameter(property = "exportDirectory", defaultValue = "${project.build.directory}/export", required = true)
      private File exportDirectory;
  
      /**
       * Skip export if exportDirectory exists.
       */
      @Parameter(property = "skipExportIfExists", defaultValue = "false")
      private boolean skipExportIfExists = false;
  
      @Inject
      public ExportMojo(ScmManager manager, SettingsDecrypter settingsDecrypter) {
          super(manager, settingsDecrypter);
      }
  
      /**
       * {@inheritDoc}
       */
      public void execute() throws MojoExecutionException {
          super.execute();
  
          if (this.skipExportIfExists && this.exportDirectory.isDirectory()) {
              return;
          }
  
          export();
      }
  
      protected File getExportDirectory() {
          return this.exportDirectory;
      }
  
      public void setExportDirectory(File exportDirectory) {
          this.exportDirectory = exportDirectory;
      }
  
      protected void export() throws MojoExecutionException {
          if (this.exportDirectory.getPath().contains("${project.basedir}")) {
              // project.basedir is not set under maven 3.x when run without a project
              this.exportDirectory = new File(this.getBasedir(), "target/export");
          }
          try {
             ScmRepository repository = getScmRepository();
 
             try {
                 if (this.exportDirectory.exists()) {
                     this.getLog().debug("Removing " + this.exportDirectory);
 
                     FileUtils.deleteDirectory(this.exportDirectory);
                 }
             } catch (IOException e) {
                 throw new MojoExecutionException("Cannot remove " + getExportDirectory());
             }
 
             if (!this.exportDirectory.mkdirs()) {
                 throw new MojoExecutionException("Cannot create " + this.exportDirectory);
             }
 
             ExportScmResult result = getScmManager()
                     .export(
                             repository,
                             new ScmFileSet(this.exportDirectory.getAbsoluteFile()),
                             getScmVersion(scmVersionType, scmVersion));
 
             checkResult(result);
 
             handleExcludesIncludesAfterCheckoutAndExport(this.exportDirectory);
         } catch (ScmException e) {
             throw new MojoExecutionException("Cannot run export command : ", e);
         }
     }
 }