/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.http.nio.integration;
  
  import java.io.IOException;
  
  import org.apache.http.HttpEntity;
  import org.apache.http.HttpEntityEnclosingRequest;
  import org.apache.http.HttpException;
  import org.apache.http.HttpRequest;
  import org.apache.http.HttpResponse;
  import org.apache.http.HttpStatus;
  import org.apache.http.entity.ContentType;
  import org.apache.http.nio.entity.NStringEntity;
  import org.apache.http.protocol.HttpContext;
  import org.apache.http.protocol.HttpRequestHandler;
  import org.apache.http.util.EntityUtils;
  
  final class SimpleRequestHandler implements HttpRequestHandler {
  
      private final boolean chunking;
  
      SimpleRequestHandler() {
          this(false);
      }
  
      SimpleRequestHandler(final boolean chunking) {
          super();
          this.chunking = chunking;
      }
  
      @Override
      public void handle(
              final HttpRequest request,
              final HttpResponse response,
              final HttpContext context) throws HttpException, IOException {
  
          final String s = request.getRequestLine().getUri();
          final int idx = s.indexOf('x');
          if (idx == -1) {
              throw new HttpException("Unexpected request-URI format");
          }
          final String pattern = s.substring(0, idx);
          final int count = Integer.parseInt(s.substring(idx + 1, s.length()));
          response.addHeader("Pattern", pattern);
  
          final String content;
          if (request instanceof HttpEntityEnclosingRequest) {
              final HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
              if (entity != null) {
                  content = EntityUtils.toString(entity);
              } else {
                  response.setStatusCode(HttpStatus.SC_BAD_REQUEST);
                  content = "Request entity not available";
              }
          } else {
              final StringBuilder buffer = new StringBuilder();
              for (int i = 0; i < count; i++) {
                  buffer.append(pattern);
              }
              content = buffer.toString();
          }
          final NStringEntity entity = new NStringEntity(content, ContentType.DEFAULT_TEXT);
          entity.setChunked(this.chunking);
          response.setEntity(entity);
      }
  
  }