/*
    * ====================================================================
    * 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.core5.http.impl.bootstrap;
  
  import javax.net.ssl.SSLContext;
  import javax.net.ssl.SSLParameters;
  import javax.net.ssl.SSLSocketFactory;
  
  import org.apache.hc.core5.annotation.Experimental;
  import org.apache.hc.core5.function.Callback;
  import org.apache.hc.core5.http.ConnectionReuseStrategy;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.config.CharCodingConfig;
  import org.apache.hc.core5.http.config.Http1Config;
  import org.apache.hc.core5.http.impl.DefaultAddressResolver;
  import org.apache.hc.core5.http.impl.DefaultConnectionReuseStrategy;
  import org.apache.hc.core5.http.impl.Http1StreamListener;
  import org.apache.hc.core5.http.impl.HttpProcessors;
  import org.apache.hc.core5.http.impl.io.DefaultBHttpClientConnectionFactory;
  import org.apache.hc.core5.http.impl.io.HttpRequestExecutor;
  import org.apache.hc.core5.http.io.HttpClientConnection;
  import org.apache.hc.core5.http.io.HttpConnectionFactory;
  import org.apache.hc.core5.http.io.SocketConfig;
  import org.apache.hc.core5.http.io.ssl.DefaultTlsSetupHandler;
  import org.apache.hc.core5.http.io.ssl.SSLSessionVerifier;
  import org.apache.hc.core5.http.protocol.HttpProcessor;
  import org.apache.hc.core5.pool.ConnPoolListener;
  import org.apache.hc.core5.pool.DefaultDisposalCallback;
  import org.apache.hc.core5.pool.LaxConnPool;
  import org.apache.hc.core5.pool.ManagedConnPool;
  import org.apache.hc.core5.pool.PoolConcurrencyPolicy;
  import org.apache.hc.core5.pool.PoolReusePolicy;
  import org.apache.hc.core5.pool.StrictConnPool;
  import org.apache.hc.core5.util.Timeout;
  
  /**
   * {@link HttpRequester} bootstrap.
   *
   * @since 5.0
   */
  public class RequesterBootstrap {
  
      private HttpProcessor httpProcessor;
      private Http1Config http1Config;
      private ConnectionReuseStrategy connReuseStrategy;
      private SocketConfig socketConfig;
      private HttpConnectionFactory<? extends HttpClientConnection> connectFactory;
      private SSLSocketFactory sslSocketFactory;
      private Callback<SSLParameters> sslSetupHandler;
      private SSLSessionVerifier sslSessionVerifier;
      private int defaultMaxPerRoute;
      private int maxTotal;
      private Timeout timeToLive;
      private PoolReusePolicy poolReusePolicy;
      private PoolConcurrencyPolicy poolConcurrencyPolicy;
      private Http1StreamListener streamListener;
      private ConnPoolListener<HttpHost> connPoolListener;
  
      private RequesterBootstrap() {
      }
  
      public static RequesterBootstrap bootstrap() {
          return new RequesterBootstrap();
      }
  
      /**
       * Assigns {@link HttpProcessor} instance.
       */
      public final RequesterBootstrap setHttpProcessor(final HttpProcessor httpProcessor) {
          this.httpProcessor = httpProcessor;
          return this;
      }
  
      /**
       * Sets HTTP/1 protocol configuration.
      */
     public final RequesterBootstrap setHttp1Config(final Http1Config http1Config) {
         this.http1Config = http1Config;
         return this;
     }
 
     /**
      * Assigns {@link ConnectionReuseStrategy} instance.
      */
     public final RequesterBootstrap setConnectionReuseStrategy(final ConnectionReuseStrategy connStrategy) {
         this.connReuseStrategy = connStrategy;
         return this;
     }
 
     /**
      * Sets socket configuration.
      */
     public final RequesterBootstrap setSocketConfig(final SocketConfig socketConfig) {
         this.socketConfig = socketConfig;
         return this;
     }
 
     public final RequesterBootstrap setConnectionFactory(final HttpConnectionFactory<? extends HttpClientConnection> connectFactory) {
         this.connectFactory = connectFactory;
         return this;
     }
 
     public final RequesterBootstrap setSslContext(final SSLContext sslContext) {
         this.sslSocketFactory = sslContext != null ? sslContext.getSocketFactory() : null;
         return this;
     }
 
     public final RequesterBootstrap setSslSocketFactory(final SSLSocketFactory sslSocketFactory) {
         this.sslSocketFactory = sslSocketFactory;
         return this;
     }
 
     /**
      * Assigns {@link Callback} for {@link SSLParameters}.
      */
     public final RequesterBootstrap setSslSetupHandler(final Callback<SSLParameters> sslSetupHandler) {
         this.sslSetupHandler = sslSetupHandler;
         return this;
     }
 
     /**
      * Assigns {@link SSLSessionVerifier} instance.
      */
     public final RequesterBootstrap setSslSessionVerifier(final SSLSessionVerifier sslSessionVerifier) {
         this.sslSessionVerifier = sslSessionVerifier;
         return this;
     }
 
     public final RequesterBootstrap setDefaultMaxPerRoute(final int defaultMaxPerRoute) {
         this.defaultMaxPerRoute = defaultMaxPerRoute;
         return this;
     }
 
     public final RequesterBootstrap setMaxTotal(final int maxTotal) {
         this.maxTotal = maxTotal;
         return this;
     }
 
     public final RequesterBootstrap setTimeToLive(final Timeout timeToLive) {
         this.timeToLive = timeToLive;
         return this;
     }
 
     public final RequesterBootstrap setPoolReusePolicy(final PoolReusePolicy poolReusePolicy) {
         this.poolReusePolicy = poolReusePolicy;
         return this;
     }
 
     @Experimental
     public final RequesterBootstrap setPoolConcurrencyPolicy(final PoolConcurrencyPolicy poolConcurrencyPolicy) {
         this.poolConcurrencyPolicy = poolConcurrencyPolicy;
         return this;
     }
 
     public final RequesterBootstrap setStreamListener(final Http1StreamListener streamListener) {
         this.streamListener = streamListener;
         return this;
     }
 
     public final RequesterBootstrap setConnPoolListener(final ConnPoolListener<HttpHost> connPoolListener) {
         this.connPoolListener = connPoolListener;
         return this;
     }
 
     public HttpRequester create() {
         final HttpRequestExecutor requestExecutor = new HttpRequestExecutor(
                 http1Config,
                 connReuseStrategy != null ? connReuseStrategy : DefaultConnectionReuseStrategy.INSTANCE,
                 streamListener);
         final ManagedConnPool<HttpHost, HttpClientConnection> connPool;
         switch (poolConcurrencyPolicy != null ? poolConcurrencyPolicy : PoolConcurrencyPolicy.STRICT) {
             case LAX:
                 connPool = new LaxConnPool<>(
                         defaultMaxPerRoute > 0 ? defaultMaxPerRoute : 20,
                         timeToLive,
                         poolReusePolicy,
                         new DefaultDisposalCallback<>(),
                         connPoolListener);
                 break;
             case STRICT:
             default:
                 connPool = new StrictConnPool<>(
                         defaultMaxPerRoute > 0 ? defaultMaxPerRoute : 20,
                         maxTotal > 0 ? maxTotal : 50,
                         timeToLive,
                         poolReusePolicy,
                         new DefaultDisposalCallback<>(),
                         connPoolListener);
                 break;
         }
         return new HttpRequester(
                 requestExecutor,
                 httpProcessor != null ? httpProcessor : HttpProcessors.client(),
                 connPool,
                 socketConfig != null ? socketConfig : SocketConfig.DEFAULT,
                 connectFactory != null ? connectFactory : new DefaultBHttpClientConnectionFactory(
                         http1Config, CharCodingConfig.DEFAULT),
                 sslSocketFactory,
                 sslSetupHandler != null ? sslSetupHandler : new DefaultTlsSetupHandler(),
                 sslSessionVerifier,
                 DefaultAddressResolver.INSTANCE);
     }
 
 }