/**

  * Copyright (c) 2011-2017, jcabi.com

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met: 1) Redistributions of source code must retain the above

  * copyright notice, this list of conditions and the following

  * disclaimer. 2) Redistributions in binary form must reproduce the above

  * copyright notice, this list of conditions and the following

  * disclaimer in the documentation and/or other materials provided

  * with the distribution. 3) Neither the name of the jcabi.com nor

  * the names of its contributors may be used to endorse or promote

  * products derived from this software without specific prior written

  * permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT

  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL

  * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  */

 package com.jcabi.http.request;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.http.ImmutableHeader;

 import com.jcabi.http.Request;

 import com.jcabi.http.RequestBody;

 import com.jcabi.http.RequestURI;

 import com.jcabi.http.Response;

 import com.jcabi.http.Wire;

 import com.jcabi.immutable.Array;

 import java.io.IOException;

 import java.io.InputStream;

 import java.net.URI;

 import java.net.URL;

 import java.util.Collection;

 import java.util.LinkedList;

 import java.util.Map;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 import org.apache.http.Header;

 import org.apache.http.HttpEntity;

 import org.apache.http.client.config.RequestConfig;

 import org.apache.http.client.methods.CloseableHttpResponse;

 import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;

 import org.apache.http.entity.BufferedHttpEntity;

 import org.apache.http.entity.InputStreamEntity;

 import org.apache.http.impl.client.HttpClients;

 import org.apache.http.util.EntityUtils;

 /**

  * Implementation of {@link Request},

  * based on Apache HTTP client.

  *

  * <p>The class is immutable and thread-safe.

  *

  * @author Yegor Bugayenko (yegor@tpc2.com)

  * @version $Id: 936dcda49313747de85ec154cd03e5a3db247eea $

  * @since 0.8

  * @checkstyle ClassDataAbstractionCoupling (500 lines)

  */

 @Immutable

 @EqualsAndHashCode(of = "base")

 @ToString(of = "base")

 @Loggable(Loggable.DEBUG)

 @SuppressWarnings("PMD.TooManyMethods")

 public final class ApacheRequest implements Request {

     /**

      * The wire to use.

      * @checkstyle AnonInnerLength (200 lines)

      */

     private static final Wire WIRE = new Wire() {

         // @checkstyle ParameterNumber (6 lines)

         @Override

         public Response send(final Request req, final String home,

             final String method,

             final Collection<Map.Entry<String, String>> headers,

             final InputStream content,

             final int connect,

             final int read) throws IOException {

             final CloseableHttpResponse response =

                 HttpClients.createSystem().execute(

                     this.httpRequest(

                         home, method, headers, content,

                         connect, read

                     )

                 );

             try {

                 return new DefaultResponse(

                     req,

                     response.getStatusLine().getStatusCode(),

                     response.getStatusLine().getReasonPhrase(),

                     this.headers(response.getAllHeaders()),

                     this.consume(response.getEntity())

                 );

             } finally {

                 response.close();

             }

         }

         /**

          * Create request.

          * @param home Home URI

          * @param method Method to use

          * @param headers HTTP Headers to use

          * @param content Content to send

          * @param connect Connect timeout

          * @param read Read timeout

          * @return Request

          * @throws IOException If an IO Exception occurs

          * @checkstyle ParameterNumber (6 lines)

          */

         public HttpEntityEnclosingRequestBase httpRequest(final String home,

             final String method,

             final Collection<Map.Entry<String, String>> headers,

             final InputStream content,

             final int connect,

             final int read) throws IOException {

             final HttpEntityEnclosingRequestBase req =

                 new HttpEntityEnclosingRequestBase() {

                     @Override

                     public String getMethod() {

                         return method;

                     }

                 };

             final URI uri = URI.create(home);

             req.setConfig(

                 RequestConfig.custom()

                     .setCircularRedirectsAllowed(false)

                     .setRedirectsEnabled(false)

                     .setConnectTimeout(connect)

                     .setSocketTimeout(read)

                     .build()

             );

             req.setURI(uri);

             req.setEntity(

                 new BufferedHttpEntity(new InputStreamEntity(content))

             );

             for (final Map.Entry<String, String> header : headers) {

                 req.addHeader(header.getKey(), header.getValue());

             }

             return req;

         }

         /**

          * Fetch body from http entity.

          * @param entity HTTP entity

          * @return Body in UTF-8

          * @throws IOException If fails

          */

         private byte[] consume(final HttpEntity entity) throws IOException {

             final byte[] body;

             if (entity == null) {

                 body = new byte[0];

             } else {

                 body = EntityUtils.toByteArray(entity);

             }

             return body;

         }

         /**

          * Make a list of all hdrs.

          * @param list Apache HTTP hdrs

          * @return Body in UTF-8

          */

         @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")

         private Array<Map.Entry<String, String>> headers(final Header... list) {

             final Collection<Map.Entry<String, String>> headers =

                 new LinkedList<>();

             for (final Header header : list) {

                 headers.add(

                     new ImmutableHeader(

                         header.getName(),

                         header.getValue()

                     )

                 );

             }

             return new Array<Map.Entry<String, String>>(headers);

         }

     };

     /**

      * Base request.

      */

     private final transient Request base;

     /**

      * Public ctor.

      * @param url The resource to work with

      */

     public ApacheRequest(final URL url) {

         this(url.toString());

     }

     /**

      * Public ctor.

      * @param uri The resource to work with

      */

     public ApacheRequest(final URI uri) {

         this(uri.toString());

     }

     /**

      * Public ctor.

      * @param uri The resource to work with

      */

     public ApacheRequest(final String uri) {

         this.base = new BaseRequest(ApacheRequest.WIRE, uri);

     }

     @Override

     public RequestURI uri() {

         return this.base.uri();

     }

     @Override

     public Request header(final String name, final Object value) {

         return this.base.header(name, value);

     }

     @Override

     public Request reset(final String name) {

         return this.base.reset(name);

     }

     @Override

     public RequestBody body() {

         return this.base.body();

     }

     @Override

     public RequestBody multipartBody() {

         return this.base.multipartBody();

     }

     @Override

     public Request method(final String method) {

         return this.base.method(method);

     }

     @Override

     public Request timeout(final int connect, final int read) {

         return this.base.timeout(connect, read);

     }

     @Override

     public Response fetch() throws IOException {

         return this.base.fetch();

     }

     @Override

     public Response fetch(final InputStream stream) throws IOException {

         return this.base.fetch(stream);

     }

     @Override

     public <T extends Wire> Request through(final Class<T> type,

         final Object... args) {

         return this.base.through(type, args);

     }

 }