/**

  * Copyright (c) 2014-2016, stateful.co

  * 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 stateful.co 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 co.stateful;

 import co.stateful.mock.MkSttc;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.http.Request;

 import com.jcabi.http.request.JdkRequest;

 import com.jcabi.http.response.RestResponse;

 import com.jcabi.http.response.XmlResponse;

 import com.jcabi.http.wire.CachingWire;

 import com.jcabi.http.wire.OneMinuteWire;

 import com.jcabi.http.wire.RetryWire;

 import com.jcabi.http.wire.VerboseWire;

 import com.jcabi.urn.URN;

 import java.io.IOException;

 import java.net.HttpURLConnection;

 import javax.ws.rs.core.HttpHeaders;

 import javax.ws.rs.core.MediaType;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 /**

  * Stateful Entry Point.

  *

  * <p>Make an instance of this class and start from there, for example,

  * if you want to use a cloud lock from

  * <a href="http://www.stateful.co">stateful.co</a>:

  *

  * <pre> Lock lock = new RtSttc(

  *   new URN("urn:github:12345"), "token"

  * ).locks().lock("test");</pre>

  *

  * <p>You need two arguments to instantiate this class: URN of the user

  * and your secret token. You can get them at the home page of

  * <a href="http://www.stateful.co">stateful.co</a>, right on the top.

  *

  * <p>It is highly recommended to use

  * {@link co.stateful.retry.ReSttc} decorator, in production

  * environment.</p>

  *

  * <p>It is also highly recommended to use

  * {@link co.stateful.cached.CdSttc} decorator, in production

  * environment.</p>

  *

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

  * @version $Id$

  * @since 0.1

  * @link <a href="http://www.yegor256.com/2014/05/18/cloud-autoincrement-counters.html">Atomic Counters at Stateful.co</a>

  * @link <a href="http://www.yegor256.com/2014/12/04/synchronization-between-nodes.html">Synchronization Between Nodes</a>

  */

 @Immutable

 @Loggable(Loggable.DEBUG)

 @ToString(of = { })

 @EqualsAndHashCode(of = "request")

 public final class RtSttc implements Sttc {

     /**

      * Entry request.

      */

     private final transient Request request;

     /**

      * Ctor.

      * @param urn Owner URN

      * @param token Security token

      */

     public RtSttc(final URN urn, final String token) {

         this.request = new JdkRequest("http://www.stateful.co")

             .through(OneMinuteWire.class)

             .through(RetryWire.class)

             .through(VerboseWire.class)

             .through(CachingWire.class, "((POST|PUT|PATCH) .*|.*\\?.*)")

             .header("X-Sttc-URN", urn.toString())

             .header("X-Sttc-Token", token)

             .header(HttpHeaders.ACCEPT, MediaType.TEXT_XML)

             .header(HttpHeaders.USER_AGENT, "java-sdk.stateful.co");

     }

     /**

      * Make an instance of it.

      * @param urn Owner URN

      * @param token Security token

      * @return Sttc

      */

     public static Sttc make(final URN urn, final String token) {

         final Sttc sttc;

         if (token.matches("[A-F0-9\\-]{19}")) {

             sttc = new RtSttc(urn, token);

         } else {

             sttc = new MkSttc();

         }

         return sttc;

     }

     @Override

     public Counters counters() throws IOException {

         return new RtCounters(

             this.request

                 .fetch()

                 .as(RestResponse.class)

                 .assertStatus(HttpURLConnection.HTTP_OK)

                 .as(XmlResponse.class)

                 .rel("/page/links/link[@rel='menu:counters']/@href")

         );

     }

     @Override

     public Locks locks() throws IOException {

         return new RtLocks(

             this.request

                 .fetch()

                 .as(RestResponse.class)

                 .assertStatus(HttpURLConnection.HTTP_OK)

                 .as(XmlResponse.class)

                 .rel("/page/links/link[@rel='menu:locks']/@href")

         );

     }

 }