/**

  * 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.wire;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Tv;

 import com.jcabi.http.Request;

 import com.jcabi.http.RequestBody;

 import com.jcabi.http.Response;

 import com.jcabi.http.Wire;

 import com.jcabi.log.Logger;

 import java.io.ByteArrayInputStream;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.Collection;

 import java.util.Map;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 /**

  * Verbose wire.

  *

  * <p>This wire makes HTTP request and response details visible in

  * log (we're using SLF4J logging facility), for example:

  *

  * <pre> String html = new JdkRequest("http://goggle.com")

  *   .through(VerboseWire.class)

  *   .header(HttpHeaders.ACCEPT, MediaType.TEXT_PLAIN)

  *   .fetch()

  *   .body();</pre>

  *

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

  *

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

  * @version $Id: 93c7fc5336b46958e261ac0a124982e5e6c2f6ab $

  * @since 0.10

  */

 @Immutable

 @ToString(of = "origin")

 @EqualsAndHashCode(of = "origin")

 public final class VerboseWire implements Wire {

     /**

      * Original wire.

      */

     private final transient Wire origin;

     /**

      * Public ctor.

      * @param wire Original wire

      */

     public VerboseWire(final Wire wire) {

         this.origin = wire;

     }

     // @checkstyle ParameterNumber (7 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 ByteArrayOutputStream output = new ByteArrayOutputStream();

         final byte[] buffer = new byte[Tv.THOUSAND];

         for (int bytes = content.read(buffer); bytes != -1;

              bytes = content.read(buffer)) {

             output.write(buffer, 0, bytes);

         }

         output.flush();

         final Response response = this.origin.send(

             req, home, method, headers,

             new ByteArrayInputStream(output.toByteArray()),

                 connect, read

         );

         final StringBuilder text = new StringBuilder(0);

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

             text.append(header.getKey())

                 .append(": ")

                 .append(header.getValue())

                 .append('\n');

         }

         text.append('\n').append(

             new RequestBody.Printable(output.toByteArray()).toString()

         );

         Logger.info(

             this,

             "#send(%s %s):\nHTTP Request (%s):\n%s\nHTTP Response (%s):\n%s",

             method, home,

             req.getClass().getName(),

             VerboseWire.indent(text.toString()),

             response.getClass().getName(),

             VerboseWire.indent(response.toString())

         );

         return response;

     }

     /**

      * Indent provided text.

      * @param text Text to indent

      * @return Indented text

      */

     private static String indent(final String text) {

         return new StringBuilder("  ")

             .append(text.replaceAll("(\n|\n\r)", "$1  "))

             .toString();

     }

 }