/*
    * 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.shared.release.phase;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.File;
  import java.util.List;
  
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.scm.ScmBranchParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.command.branch.BranchScmResult;
  import org.apache.maven.scm.manager.NoSuchScmProviderException;
  import org.apache.maven.scm.provider.ScmProvider;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.apache.maven.scm.repository.ScmRepositoryException;
  import org.apache.maven.shared.release.ReleaseExecutionException;
  import org.apache.maven.shared.release.ReleaseFailureException;
  import org.apache.maven.shared.release.ReleaseResult;
  import org.apache.maven.shared.release.config.ReleaseDescriptor;
  import org.apache.maven.shared.release.env.ReleaseEnvironment;
  import org.apache.maven.shared.release.scm.ReleaseScmCommandException;
  import org.apache.maven.shared.release.scm.ReleaseScmRepositoryException;
  import org.apache.maven.shared.release.scm.ScmRepositoryConfigurator;
  import org.apache.maven.shared.release.util.ReleaseUtil;
  
  /**
   * Branch the SCM repository.
   *
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   */
  @Singleton
  @Named("scm-branch")
  public class ScmBranchPhase extends AbstractReleasePhase {
      /**
       * Tool that gets a configured SCM repository from release configuration.
       */
      private final ScmRepositoryConfigurator scmRepositoryConfigurator;
  
      @Inject
      public ScmBranchPhase(ScmRepositoryConfigurator scmRepositoryConfigurator) {
          this.scmRepositoryConfigurator = scmRepositoryConfigurator;
      }
  
      @Override
      public ReleaseResult execute(
              ReleaseDescriptor releaseDescriptor,
              ReleaseEnvironment releaseEnvironment,
              List<MavenProject> reactorProjects)
              throws ReleaseExecutionException, ReleaseFailureException {
          ReleaseResult relResult = new ReleaseResult();
  
          validateConfiguration(releaseDescriptor);
  
          logInfo(relResult, "Branching release with the label " + releaseDescriptor.getScmReleaseLabel() + "...");
  
          ReleaseDescriptor basedirAlignedReleaseDescriptor =
                  ReleaseUtil.createBasedirAlignedReleaseDescriptor(releaseDescriptor, reactorProjects);
  
          ScmRepository repository;
          ScmProvider provider;
          try {
              repository = scmRepositoryConfigurator.getConfiguredRepository(
                      basedirAlignedReleaseDescriptor.getScmSourceUrl(),
                      releaseDescriptor,
                      releaseEnvironment.getSettings());
  
              repository.getProviderRepository().setPushChanges(releaseDescriptor.isPushChanges());
  
              repository.getProviderRepository().setWorkItem(releaseDescriptor.getWorkItem());
  
              provider = scmRepositoryConfigurator.getRepositoryProvider(repository);
  
          } catch (ScmRepositoryException e) {
              throw new ReleaseScmRepositoryException(e.getMessage(), e.getValidationMessages());
          } catch (NoSuchScmProviderException e) {
              throw new ReleaseExecutionException("Unable to configure SCM repository: " + e.getMessage(), e);
          }
  
         BranchScmResult result;
         try {
             ScmFileSet fileSet = new ScmFileSet(new File(basedirAlignedReleaseDescriptor.getWorkingDirectory()));
             String branchName = releaseDescriptor.getScmReleaseLabel();
 
             ScmBranchParameters scmBranchParameters = new ScmBranchParameters();
             scmBranchParameters.setMessage(releaseDescriptor.getScmCommentPrefix() + "copy for branch " + branchName);
             scmBranchParameters.setRemoteBranching(releaseDescriptor.isRemoteTagging());
             scmBranchParameters.setScmRevision(releaseDescriptor.getScmReleasedPomRevision());
             scmBranchParameters.setPinExternals(releaseDescriptor.isPinExternals());
 
             result = provider.branch(repository, fileSet, branchName, scmBranchParameters);
         } catch (ScmException e) {
             throw new ReleaseExecutionException("An error is occurred in the branch process: " + e.getMessage(), e);
         }
 
         if (!result.isSuccess()) {
             throw new ReleaseScmCommandException("Unable to branch SCM", result);
         }
 
         relResult.setResultCode(ReleaseResult.SUCCESS);
 
         return relResult;
     }
 
     @Override
     public ReleaseResult simulate(
             ReleaseDescriptor releaseDescriptor,
             ReleaseEnvironment releaseEnvironment,
             List<MavenProject> reactorProjects)
             throws ReleaseExecutionException, ReleaseFailureException {
         ReleaseResult result = new ReleaseResult();
 
         validateConfiguration(releaseDescriptor);
         ReleaseDescriptor basedirAlignedReleaseDescriptor =
                 ReleaseUtil.createBasedirAlignedReleaseDescriptor(releaseDescriptor, reactorProjects);
 
         logInfo(result, "Full run would branch " + basedirAlignedReleaseDescriptor.getWorkingDirectory());
         if (releaseDescriptor.getScmBranchBase() != null) {
             logInfo(result, "  to SCM URL " + releaseDescriptor.getScmBranchBase());
         }
         logInfo(result, "  with label '" + releaseDescriptor.getScmReleaseLabel() + "'");
         if (releaseDescriptor.isPinExternals()) {
             logInfo(result, "  and pinned externals");
         }
 
         result.setResultCode(ReleaseResult.SUCCESS);
 
         return result;
     }
 
     private static void validateConfiguration(ReleaseDescriptor releaseDescriptor) throws ReleaseFailureException {
         if (releaseDescriptor.getScmReleaseLabel() == null) {
             throw new ReleaseFailureException("A release label is required for committing");
         }
     }
 }