/*
    *    Copyright 2006-2026 the original author or authors.
    *
    *    Licensed 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
    *
    *       https://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.mybatis.generator.internal;
  
  import static org.mybatis.generator.internal.util.messages.Messages.getString;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.util.StringTokenizer;
  
  import org.mybatis.generator.api.ShellCallback;
  import org.mybatis.generator.exception.ShellException;
  
  public class DefaultShellCallback implements ShellCallback {
  
      public DefaultShellCallback() {
          super();
      }
  
      @Override
      public File getDirectory(String targetProject, String targetPackage) throws ShellException {
          // targetProject is interpreted as a directory that must already exist
          //
          // targetPackage is interpreted as a subdirectory, but in package
          // format (with dots instead of slashes). The subdirectory will be
          // created if it does not already exist
  
          Path targetProjectDirectory = Path.of(targetProject);
          if (!Files.isDirectory(targetProjectDirectory)) {
              throw new ShellException(getString("Warning.9", //$NON-NLS-1$
                      targetProject));
          }
  
          StringBuilder sb = new StringBuilder();
          StringTokenizer st = new StringTokenizer(targetPackage, "."); //$NON-NLS-1$
          while (st.hasMoreTokens()) {
              sb.append(st.nextToken());
              sb.append(File.separatorChar);
          }
  
          Path directory = targetProjectDirectory.resolve(sb.toString());
          if (!Files.isDirectory(directory)) {
              try {
                  Files.createDirectories(directory);
              } catch (IOException e) {
                  throw new ShellException(getString("Warning.10", //$NON-NLS-1$
                          directory.toFile().getAbsolutePath()));
              }
          }
  
          return directory.toFile();
      }
  }