/*
    * 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.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.command.status.StatusScmResult;
  import org.apache.maven.scm.manager.ScmManager;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.apache.maven.settings.crypto.SettingsDecrypter;
  
  /**
   * This mojo will fail the build if there is any local modifications.
   *
   * @author Olivier Lamy
   * @since 1.2
   */
  @Mojo(name = "check-local-modification")
  public class CheckLocalModificationsMojo extends AbstractScmMojo {
  
      /**
       * Custom error message.
       */
      @Parameter(
              property = "scm.checkLocalModification.errorMessage",
              defaultValue = "The build will stop as there is local modifications")
      private String errorMessage;
  
      /**
       * Skip the check for local modifications if set to {@code true}.
       */
      @Parameter(property = "scm.checkLocalModification.skip", defaultValue = "false")
      private boolean skip;
  
      @Inject
      public CheckLocalModificationsMojo(ScmManager manager, SettingsDecrypter settingsDecrypter) {
          super(manager, settingsDecrypter);
      }
  
      public void execute() throws MojoExecutionException {
          if (skip) {
              getLog().info("check-local-modification execution has been skipped");
              return;
          }
          super.execute();
  
          try {
              ScmRepository repository = getScmRepository();
              StatusScmResult result = getScmManager().status(repository, getFileSet());
  
              if (!result.isSuccess()) {
                  throw new MojoExecutionException(
                          "Unable to check for local modifications : " + result.getProviderMessage());
              }
  
              if (!result.getChangedFiles().isEmpty()) {
                  throw new MojoExecutionException(errorMessage);
              }
          } catch (IOException | ScmException e) {
              throw new MojoExecutionException(e.getMessage(), e);
          }
      }
  }