/*
    * 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.rat.anttasks;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.Reader;
  
  import org.apache.rat.api.Document;
  import org.apache.rat.api.MetaData;
  import org.apache.rat.api.RatException;
  import org.apache.rat.document.impl.DocumentImplUtils;
  import org.apache.rat.report.IReportable;
  import org.apache.rat.report.RatReport;
  import org.apache.tools.ant.types.Resource;
  import org.apache.tools.ant.types.ResourceCollection;
  import org.apache.tools.ant.types.resources.FileResource;
  
  /**
   * Implementation of IReportable that traverses over a resource collection
   * internally.
   */
  class ResourceCollectionContainer implements IReportable {
      private final ResourceCollection rc;
  
      ResourceCollectionContainer(ResourceCollection rc) {
          this.rc = rc;
      }
  
      @Override
      public void run(RatReport report) throws RatException {
          ResourceDocument document = new ResourceDocument();
          for (Resource r : rc) {
              if (!r.isDirectory()) {
                  document.setResource(r);
                  document.getMetaData().clear();
                  report.report(document);
              }
          }
      }
  
      private static class ResourceDocument implements Document {
  
          private Resource resource;
          private final MetaData metaData = new MetaData();
  
          private void setResource(Resource resource) {
              this.resource = resource;
          }
  
          @Override
          public Reader reader() throws IOException {
              final InputStream in = resource.getInputStream();
              return new InputStreamReader(in);
          }
  
          @Override
          public String getName() {
              // TODO: reconsider names
              String result = null;
              if (resource instanceof FileResource) {
                  final FileResource fileResource = (FileResource) resource;
                  final File file = fileResource.getFile();
                  result = DocumentImplUtils.toName(file);
              } else {
                  result = resource.getName();
              }
              return result;
          }
  
          @Override
          public boolean isComposite() {
              if (resource instanceof FileResource) {
                  final FileResource fileResource = (FileResource) resource;
                  final File file = fileResource.getFile();
                  return DocumentImplUtils.isZip(file);
              }
              return false;
          }
  
          @Override
         public MetaData getMetaData() {
             return metaData;
         }
 
         @Override
         public InputStream inputStream() throws IOException {
             return resource.getInputStream();
         }
     }
 }