/**
    * Copyright 2008-2012 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.wagon.shared;
  
  /*
   * 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.
   */
  
  import java.io.File;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.maven.plugin.logging.Log;
  import org.apache.maven.wagon.Wagon;
  import org.apache.maven.wagon.WagonException;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * @plexus.component role="org.codehaus.mojo.wagon.shared.WagonDownload" role-hint="default"
   */
  
  public class DefaultWagonDownload implements WagonDownload {
  
      @Override
      public List<?> getFileList(Wagon wagon, WagonFileSet fileSet, Log logger) throws WagonException {
          logger.info("Scanning remote file system: " + wagon.getRepository().getUrl() + " ...");
  
          WagonDirectoryScanner dirScan = new WagonDirectoryScanner();
          dirScan.setLogger(logger);
          dirScan.setWagon(wagon);
          dirScan.setExcludes(fileSet.getExcludes());
          dirScan.setIncludes(fileSet.getIncludes());
          dirScan.setCaseSensitive(fileSet.isCaseSensitive());
          dirScan.setDirectory(fileSet.getDirectory());
          if (fileSet.isUseDefaultExcludes()) {
              dirScan.addDefaultExcludes();
          }
  
          dirScan.scan();
  
          return dirScan.getFilesIncluded();
      }
  
      @Override
      public void download(Wagon wagon, WagonFileSet remoteFileSet, Log logger) throws WagonException {
          List<?> fileList = this.getFileList(wagon, remoteFileSet, logger);
  
          String url = wagon.getRepository().getUrl() + "/";
  
          if (fileList.size() == 0) {
              logger.info("Nothing to download.");
              return;
          }
  
          for (Iterator<?> iterator = fileList.iterator(); iterator.hasNext();) {
              String remoteFile = (String) iterator.next();
  
              File destination = new File(remoteFileSet.getDownloadDirectory() + "/" + remoteFile);
  
              if (!StringUtils.isBlank(remoteFileSet.getDirectory())) {
                  remoteFile = remoteFileSet.getDirectory() + "/" + remoteFile;
              }
  
              logger.info("Downloading " + url + remoteFile + " to " + destination + " ...");
  
              wagon.get(remoteFile, destination);
          }
      }
  
      /**
       *
       * @param wagon
       *            - a Wagon instance
       * @param resource
       *            - Remote resource to check
      * @throws WagonException
      */
     @Override
     public boolean exists(Wagon wagon, String resource) throws WagonException {
         return wagon.resourceExists(resource);
     }
 
 }