/*
    * 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.maven.plugins.site.deploy;
  
  import javax.servlet.Servlet;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Enumeration;
  import java.util.List;
  
  import org.apache.commons.io.FileUtils;
  import org.apache.commons.io.IOUtils;
  import org.eclipse.jetty.server.Handler;
  import org.eclipse.jetty.server.Request;
  import org.eclipse.jetty.server.Server;
  import org.eclipse.jetty.server.handler.AbstractHandler;
  import org.eclipse.jetty.servlet.ServletContextHandler;
  import org.eclipse.jetty.servlet.ServletHolder;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * @author Olivier Lamy
   * @since 3.0-beta-2
   *
   */
  public class SimpleDavServerHandler {
  
      private Logger log = LoggerFactory.getLogger(getClass());
  
      private Server server;
  
      private File siteTargetPath;
  
      List<HttpRequest> httpRequests = new ArrayList<>();
  
      public SimpleDavServerHandler(final File targetPath) throws Exception {
          this.siteTargetPath = targetPath;
          Handler repoHandler = new AbstractHandler() {
              public void handle(String target, Request r, HttpServletRequest request, HttpServletResponse response)
                      throws IOException, ServletException {
                  String targetPath = request.getPathInfo();
  
                  HttpRequest rq = new HttpRequest();
                  rq.method = request.getMethod();
                  rq.path = targetPath;
  
                  @SuppressWarnings("rawtypes")
                  Enumeration headerNames = request.getHeaderNames();
                  while (headerNames.hasMoreElements()) {
                      String name = (String) headerNames.nextElement();
                      rq.headers.put(name, request.getHeader(name));
                  }
  
                  httpRequests.add(rq);
  
                  if (request.getMethod().equalsIgnoreCase("PUT")) {
                      File targetFile = new File(siteTargetPath, targetPath);
                      log.info("writing file " + targetFile.getPath());
                      FileUtils.writeByteArrayToFile(targetFile, IOUtils.toByteArray(request.getInputStream()));
                  }
  
                  // PrintWriter writer = response.getWriter();
  
                  response.setStatus(HttpServletResponse.SC_OK);
  
                  ((Request) request).setHandled(true);
              }
          };
          server = new Server(0);
          server.setHandler(repoHandler);
          server.start();
      }
  
      public SimpleDavServerHandler(Servlet servlet) throws Exception {
          siteTargetPath = null;
          server = new Server(0);
          ServletContextHandler context = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
         context.setContextPath("/");
         server.setHandler(context);
         context.addServlet(new ServletHolder(servlet), "/");
 
         server.start();
     }
 
     public int getPort() {
         return server.getURI().getPort();
     }
 
     public void stop() throws Exception {
         server.stop();
     }
 }