/*
    * Copyright 2014 The Codehaus Foundation.
    *
    * 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
    *
    *      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.codehaus.plexus.archiver.resources;
  
  import javax.annotation.Nonnull;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.URL;
  
  import org.codehaus.plexus.components.io.attributes.AttributeUtils;
  import org.codehaus.plexus.components.io.attributes.PlexusIoResourceAttributes;
  import org.codehaus.plexus.components.io.functions.ResourceAttributeSupplier;
  import org.codehaus.plexus.components.io.resources.AbstractPlexusIoResource;
  
  /**
   * A file resource that does not necessarily exist (anywhere).
   */
  public class PlexusIoVirtualFileResource extends AbstractPlexusIoResource implements ResourceAttributeSupplier {
  
      private final File file;
  
      protected PlexusIoVirtualFileResource(File file, String name) {
          super(name, file.lastModified(), file.length(), file.isFile(), file.isDirectory(), file.exists());
          this.file = file;
      }
  
      protected static String getName(File file) {
          return file.getPath().replace('\\', '/');
      }
  
      /**
       * Returns the resources file.
       */
      public File getFile() {
          return file;
      }
  
      @Nonnull
      @Override
      public InputStream getContents() throws IOException {
          throw new UnsupportedOperationException("We're not really sure we can do this");
      }
  
      @Override
      public URL getURL() throws IOException {
          return getFile().toURI().toURL();
      }
  
      @Override
      public long getSize() {
          return getFile().length();
      }
  
      @Override
      public boolean isDirectory() {
          return getFile().isDirectory();
      }
  
      @Override
      public boolean isExisting() {
          return getFile().exists();
      }
  
      @Override
      public boolean isFile() {
          return getFile().isFile();
      }
  
      @Override
      public PlexusIoResourceAttributes getAttributes() {
          return null;
      }
  
      @Override
      public long getLastModified() {
          if (file.exists()) {
              return AttributeUtils.getLastModified(getFile());
          } else {
              return System.currentTimeMillis();
          }
      }
  
      @Override
      public boolean isSymbolicLink() {
         return getAttributes().isSymbolicLink();
     }
 }