/*
    * 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.provider.svn.svnexe.command.branch;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang3.StringUtils;
  import org.apache.maven.scm.ScmBranch;
  import org.apache.maven.scm.ScmBranchParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.command.branch.AbstractBranchCommand;
  import org.apache.maven.scm.command.branch.BranchScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.svn.SvnCommandUtils;
  import org.apache.maven.scm.provider.svn.SvnTagBranchUtils;
  import org.apache.maven.scm.provider.svn.command.SvnCommand;
  import org.apache.maven.scm.provider.svn.repository.SvnScmProviderRepository;
  import org.apache.maven.scm.provider.svn.svnexe.command.SvnCommandLineUtils;
  import org.codehaus.plexus.util.FileUtils;
  import org.codehaus.plexus.util.Os;
  import org.codehaus.plexus.util.cli.CommandLineException;
  import org.codehaus.plexus.util.cli.CommandLineUtils;
  import org.codehaus.plexus.util.cli.Commandline;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   * @author Olivier Lamy
   *
   * TODO since this is just a copy, use that instead.
   */
  public class SvnBranchCommand extends AbstractBranchCommand implements SvnCommand {
  
      public ScmResult executeBranchCommand(
              ScmProviderRepository repo, ScmFileSet fileSet, String branch, ScmBranchParameters scmBranchParameters)
              throws ScmException {
          if (branch == null || branch.trim().isEmpty()) {
              throw new ScmException("branch name must be specified");
          }
  
          if (!fileSet.getFileList().isEmpty()) {
              throw new ScmException("This provider doesn't support branching subsets of a directory");
          }
  
          SvnScmProviderRepository repository = (SvnScmProviderRepository) repo;
  
          File messageFile = FileUtils.createTempFile("maven-scm-", ".commit", null);
  
          try {
              FileUtils.fileWrite(messageFile.getAbsolutePath(), "UTF-8", scmBranchParameters.getMessage());
          } catch (IOException ex) {
              return new BranchScmResult(
                      null,
                      "Error while making a temporary file for the commit message: " + ex.getMessage(),
                      null,
                      false);
          }
  
          Commandline cl = createCommandLine(repository, fileSet.getBasedir(), branch, messageFile, scmBranchParameters);
  
          CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer();
  
          CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
  
          if (logger.isInfoEnabled()) {
              logger.info("Executing: " + SvnCommandLineUtils.cryptPassword(cl));
  
              if (Os.isFamily(Os.FAMILY_WINDOWS)) {
                  logger.info("Working directory: " + cl.getWorkingDirectory().getAbsolutePath());
              }
          }
  
          int exitCode;
  
          try {
              exitCode = SvnCommandLineUtils.execute(cl, stdout, stderr);
          } catch (CommandLineException ex) {
             throw new ScmException("Error while executing command.", ex);
         } finally {
             try {
                 FileUtils.forceDelete(messageFile);
             } catch (IOException ex) {
                 // ignore
             }
         }
 
         if (exitCode != 0) {
             return new BranchScmResult(cl.toString(), "The svn branch command failed.", stderr.getOutput(), false);
         }
 
         List<ScmFile> fileList = new ArrayList<>();
 
         List<File> files = null;
 
         try {
             files = FileUtils.getFiles(fileSet.getBasedir(), "**", "**/.svn/**", false);
         } catch (IOException e) {
             throw new ScmException("Error while executing command.", e);
         }
 
         for (File f : files) {
             fileList.add(new ScmFile(f.getPath(), ScmFileStatus.TAGGED));
         }
 
         return new BranchScmResult(cl.toString(), fileList);
     }
 
     /** {@inheritDoc} */
     public ScmResult executeBranchCommand(ScmProviderRepository repo, ScmFileSet fileSet, String branch, String message)
             throws ScmException {
         ScmBranchParameters scmBranchParameters = new ScmBranchParameters(message);
         return executeBranchCommand(repo, fileSet, branch, scmBranchParameters);
     }
 
     // ----------------------------------------------------------------------
     //
     // ----------------------------------------------------------------------
 
     public static Commandline createCommandLine(
             SvnScmProviderRepository repository, File workingDirectory, String branch, File messageFile) {
         ScmBranchParameters scmBranchParameters = new ScmBranchParameters();
         scmBranchParameters.setRemoteBranching(false);
         scmBranchParameters.setPinExternals(false);
         return createCommandLine(repository, workingDirectory, branch, messageFile, scmBranchParameters);
     }
 
     public static Commandline createCommandLine(
             SvnScmProviderRepository repository,
             File workingDirectory,
             String branch,
             File messageFile,
             ScmBranchParameters scmBranchParameters) {
         Commandline cl = SvnCommandLineUtils.getBaseSvnCommandLine(workingDirectory, repository);
 
         cl.createArg().setValue("copy");
 
         cl.createArg().setValue("--parents");
 
         cl.createArg().setValue("--file");
 
         cl.createArg().setValue(messageFile.getAbsolutePath());
 
         cl.createArg().setValue("--encoding");
 
         cl.createArg().setValue("UTF-8");
 
         if (scmBranchParameters != null && scmBranchParameters.isPinExternals()) {
             cl.createArg().setValue("--pin-externals");
         }
 
         if (scmBranchParameters != null && scmBranchParameters.isRemoteBranching()) {
             if (StringUtils.isNotBlank(scmBranchParameters.getScmRevision())) {
                 cl.createArg().setValue("--revision");
                 cl.createArg().setValue(scmBranchParameters.getScmRevision());
             }
             String url = SvnCommandUtils.fixUrl(repository.getUrl(), repository.getUser());
             cl.createArg().setValue(url + "@");
         } else {
             cl.createArg().setValue(".");
         }
         // Note: this currently assumes you have the branch base checked out too
         String branchUrl = SvnTagBranchUtils.resolveBranchUrl(repository, new ScmBranch(branch));
         branchUrl = SvnCommandUtils.fixUrl(branchUrl, repository.getUser());
         cl.createArg().setValue(branchUrl + "@");
 
         return cl;
     }
 }