/*
    * 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.commons.lang3.StringUtils;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.command.status.StatusScmResult;
  import org.apache.maven.scm.manager.ScmManager;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.apache.maven.settings.crypto.SettingsDecrypter;
  
  /**
   * Display the modification status of the files in the configured scm url.
   *
   * @author <a href="evenisse@apache.org">Emmanuel Venisse</a>
   * @author Olivier Lamy
   */
  @Mojo(name = "status", aggregator = true)
  public class StatusMojo extends AbstractScmMojo {
  
      @Inject
      public StatusMojo(ScmManager manager, SettingsDecrypter settingsDecrypter) {
          super(manager, settingsDecrypter);
      }
  
      /**
       * {@inheritDoc}
       */
      public void execute() throws MojoExecutionException {
          super.execute();
  
          try {
              ScmRepository repository = getScmRepository();
  
              StatusScmResult result = getScmManager().status(repository, getFileSet());
  
              checkResult(result);
  
              File baseDir = getFileSet().getBasedir();
  
              // Determine the maximum length of the status column
              int maxLen = 0;
  
              for (ScmFile file : result.getChangedFiles()) {
                  maxLen = Math.max(maxLen, file.getStatus().toString().length());
              }
  
              for (ScmFile file : result.getChangedFiles()) {
                  // right align all of the statuses
                  getLog().info(StringUtils.leftPad(file.getStatus().toString(), maxLen) + " status for "
                          + getRelativePath(baseDir, file.getPath()));
              }
          } catch (IOException | ScmException e) {
              throw new MojoExecutionException("Cannot run status command : ", e);
          }
      }
  
      /**
       * Formats the filename so that it is a relative directory from the base.
       *
       * @param baseDir
       * @param path
       * @return the relative path
       */
      protected String getRelativePath(File baseDir, String path) {
          if (path.equals(baseDir.getAbsolutePath())) {
              return ".";
          } else if (path.indexOf(baseDir.getAbsolutePath()) == 0) {
              // the + 1 gets rid of a leading file separator
              return path.substring(baseDir.getAbsolutePath().length() + 1);
          } else {
              return path;
          }
      }
  }