/*
    *  Copyright 2007 rafale.
    *
    *  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.
   *  under the License.
   */
  package org.apache.maven.archetype.repository;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStream;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.mortbay.util.IO;
  import org.mortbay.util.StringUtil;
  
  /**
   *
   * @author rafale
   */
  public class RepositoryServlet
      extends HttpServlet
  {
      private File getFile( HttpServletRequest request )
      {
          log( "Requested file = " + request.getRequestURI() );
  
          String filePath =
              System.getProperty( "org.apache.maven.archetype.repository.directory" ).trim() + "/"
                  + request.getRequestURI();
          filePath = StringUtil.replace( filePath, "\\", File.separator );
          filePath = StringUtil.replace( filePath, File.separator, "/" );
          filePath = filePath.replaceAll( "/repo/", "/" );
          filePath = filePath.replaceAll( "//", "/" );
          filePath = filePath.replaceAll( "//", "/" );
          filePath = filePath.replaceAll( "//", "/" );
          filePath = StringUtil.replace( filePath, "/", File.separator );
          log( "Complete file path = " + filePath );
          
          return new File( filePath );
      }
  
      public void doGet( HttpServletRequest request, HttpServletResponse response )
          throws ServletException
      {
          log( "Getting file" );
          InputStream is = null;
          try
          {
              is = new FileInputStream( getFile( request ) );
  
              IO.copy( is, response.getOutputStream() );
              response.setStatus( HttpServletResponse.SC_OK );
              log( "File sent" );
          }
          catch ( FileNotFoundException fileNotFoundException )
          {
              response.setStatus( HttpServletResponse.SC_NOT_FOUND );
              log( "Requested file not found " );
          }
          catch ( IOException iOException )
          {
              response.setStatus( HttpServletResponse.SC_INTERNAL_SERVER_ERROR );
              log( "Cannot send file", iOException );
          }
          finally
          {
              IO.close( is );
          }
      }
  }