/*
    * ====================================================================
    * 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.hc.client5.testing.async;
  
  import java.io.IOException;
  
  import org.apache.hc.client5.http.async.methods.SimpleBody;
  import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
  import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
  import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
  import org.apache.hc.core5.http.ContentType;
  import org.apache.hc.core5.http.EntityDetails;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpRequest;
  import org.apache.hc.core5.http.nio.AsyncEntityProducer;
  import org.apache.hc.core5.http.nio.AsyncRequestConsumer;
  import org.apache.hc.core5.http.nio.AsyncServerRequestHandler;
  import org.apache.hc.core5.http.nio.entity.BasicAsyncEntityConsumer;
  import org.apache.hc.core5.http.nio.entity.BasicAsyncEntityProducer;
  import org.apache.hc.core5.http.nio.entity.StringAsyncEntityProducer;
  import org.apache.hc.core5.http.nio.support.AbstractAsyncRequesterConsumer;
  import org.apache.hc.core5.http.nio.support.AbstractServerExchangeHandler;
  import org.apache.hc.core5.http.nio.support.BasicResponseProducer;
  import org.apache.hc.core5.http.protocol.HttpContext;
  import org.apache.hc.core5.http.protocol.HttpCoreContext;
  
  public abstract class AbstractSimpleServerExchangeHandler extends AbstractServerExchangeHandler<SimpleHttpRequest> {
  
      protected abstract SimpleHttpResponse handle(SimpleHttpRequest request, HttpCoreContext context) throws HttpException;
  
      @Override
      protected final AsyncRequestConsumer<SimpleHttpRequest> supplyConsumer(
              final HttpRequest request,
              final EntityDetails entityDetails,
              final HttpContext context) throws HttpException {
          return new AbstractAsyncRequesterConsumer<SimpleHttpRequest, byte[]>(new BasicAsyncEntityConsumer()) {
  
              @Override
              protected SimpleHttpRequest buildResult(
                      final HttpRequest request,
                      final byte[] body,
                      final ContentType contentType) {
                  final SimpleRequestBuilder builder = SimpleRequestBuilder.copy(request);
                  if (body != null) {
                      builder.setBody(body, contentType);
                  }
                  return builder.build();
              }
  
          };
      }
  
      @Override
      protected final void handle(
              final SimpleHttpRequest request,
              final AsyncServerRequestHandler.ResponseTrigger responseTrigger,
              final HttpContext context) throws HttpException, IOException {
          final SimpleHttpResponse response = handle(request, HttpCoreContext.adapt(context));
          final SimpleBody body = response.getBody();
          final AsyncEntityProducer entityProducer;
          if (body != null) {
              if (body.isText()) {
                  entityProducer = new StringAsyncEntityProducer(body.getBodyText(), body.getContentType());
              } else {
                  entityProducer = new BasicAsyncEntityProducer(body.getBodyBytes(), body.getContentType());
              }
          } else {
              entityProducer = null;
          }
          responseTrigger.submitResponse(new BasicResponseProducer(response, entityProducer), context);
  
      }
  
  }