/**
    * Copyright 2009-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.codehaus.mojo.properties;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.commons.io.FileUtils;
  import org.junit.Test;
  
  public class DirectoryComparer {
  
      @Test
      public void test() {
          try {
              File dir1 = new File("/Users/jeffcaddel/ws/OLE-2987/ole/build/war");
              // File dir1 = new File("/Users/jeffcaddel/ws/OLE-2987/ole/target/foo");
              File dir2 = new File("/Users/jeffcaddel/ws/OLE-2987/ole/target/ole-fs-0.8.0-h-SNAPSHOT");
              DD one = getDD(dir1);
              DD two = getDD(dir2);
              execute(one, two);
          } catch (Throwable t) {
              t.printStackTrace();
          }
  
      }
  
      protected DD getDD(File dir) {
          List<File> files = new ArrayList<File>(FileUtils.listFiles(dir, null, true));
          Map<String, File> map = new HashMap<String, File>();
          for (File file : files) {
              String key = getRelativePath(dir, file);
              map.put(key, file);
          }
          DD dd = new DD();
          dd.setDir(dir);
          dd.setFiles(files);
          dd.setFileMap(map);
          return dd;
      }
  
      protected void execute(DD one, DD two) {
          List<File> u1 = getUnmatchedFiles(one, two);
          List<File> u2 = getUnmatchedFiles(two, one);
          System.out.println(u1.size() + " " + u2.size());
          for (File u : u1) {
              System.out.println(u);
          }
          System.out.println();
          for (File u : u2) {
              System.out.println(u);
          }
      }
  
      protected List<File> getUnmatchedFiles(DD one, DD two) {
          List<File> unmatched = new ArrayList<File>();
          Map<String, File> fileMap = two.getFileMap();
          for (File file : one.getFiles()) {
              String relativePath = getRelativePath(one.getDir(), file);
              File match = fileMap.get(relativePath);
              if (match == null) {
                  unmatched.add(file);
              }
          }
          return unmatched;
      }
  
      protected String getRelativePath(File dir, File file) {
          String dirPath = dir.getAbsolutePath();
          String path = file.getAbsolutePath();
          return path.replace(dirPath, "");
      }
  }