/*
 * Copyright (c) 2016 AsyncHttpClient Project. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at
 *     http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient.testserver;

import org.asynchttpclient.AsyncHttpClient;
import org.asynchttpclient.AsyncHttpClientConfig;
import org.asynchttpclient.DefaultAsyncHttpClientConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static org.asynchttpclient.Dsl.asyncHttpClient;
import static org.asynchttpclient.Dsl.config;

public abstract class HttpTest {

  protected static final String COMPLETED_EVENT = "Completed";
  protected static final String STATUS_RECEIVED_EVENT = "StatusReceived";
  protected static final String HEADERS_RECEIVED_EVENT = "HeadersReceived";
  protected static final String HEADERS_WRITTEN_EVENT = "HeadersWritten";
  protected static final String CONNECTION_OPEN_EVENT = "ConnectionOpen";
  protected static final String HOSTNAME_RESOLUTION_EVENT = "HostnameResolution";
  protected static final String HOSTNAME_RESOLUTION_SUCCESS_EVENT = "HostnameResolutionSuccess";
  protected static final String CONNECTION_SUCCESS_EVENT = "ConnectionSuccess";
  protected static final String TLS_HANDSHAKE_EVENT = "TlsHandshake";
  protected static final String TLS_HANDSHAKE_SUCCESS_EVENT = "TlsHandshakeSuccess";
  protected static final String CONNECTION_POOL_EVENT = "ConnectionPool";
  protected static final String CONNECTION_OFFER_EVENT = "ConnectionOffer";
  protected static final String REQUEST_SEND_EVENT = "RequestSend";
  protected final Logger logger = LoggerFactory.getLogger(getClass());

  protected ClientTestBody withClient() {
    return withClient(config().setMaxRedirects(0));
  }

  protected ClientTestBody withClient(DefaultAsyncHttpClientConfig.Builder builder) {
    return withClient(builder.build());
  }

  private ClientTestBody withClient(AsyncHttpClientConfig config) {
    return new ClientTestBody(config);
  }

  protected ServerTestBody withServer(HttpServer server) {
    return new ServerTestBody(server);
  }

  @FunctionalInterface
  protected interface ClientFunction {
    void apply(AsyncHttpClient client) throws Throwable;
  }

  @FunctionalInterface
  protected interface ServerFunction {
    void apply(HttpServer server) throws Throwable;
  }

  protected static class ClientTestBody {

    private final AsyncHttpClientConfig config;

    private ClientTestBody(AsyncHttpClientConfig config) {
      this.config = config;
    }

    public void run(ClientFunction f) throws Throwable {
      try (AsyncHttpClient client = asyncHttpClient(config)) {
        f.apply(client);
      }
    }
  }

  protected static class ServerTestBody {

    private final HttpServer server;

    private ServerTestBody(HttpServer server) {
      this.server = server;
    }

    public void run(ServerFunction f) throws Throwable {
      try {
        f.apply(server);
      } finally {
        server.reset();
      }
    }
  }
}