/**

  * Copyright (c) 2013-2017, 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.github;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.http.Request;

 import com.jcabi.http.response.JsonResponse;

 import com.jcabi.http.response.RestResponse;

 import java.io.IOException;

 import java.net.HttpURLConnection;

 import java.util.Map;

 import javax.json.Json;

 import javax.json.JsonObject;

 import javax.json.JsonStructure;

 import lombok.EqualsAndHashCode;

 /**

  * Github pull requests.

  *

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

  * @version $Id: 282fe9819fc9d6a0d7b22980134bf80d8aa16871 $

  * @since 0.3

  * @checkstyle MultipleStringLiterals (500 lines)

  */

 @Immutable

 @Loggable(Loggable.DEBUG)

 @EqualsAndHashCode(of = { "entry", "request", "owner" })

 final class RtPulls implements Pulls {

     /**

      * API entry point.

      */

     private final transient Request entry;

     /**

      * RESTful request.

      */

     private final transient Request request;

     /**

      * Repository.

      */

     private final transient Repo owner;

     /**

      * Public ctor.

      * @param req Request

      * @param repo Repository

      */

     RtPulls(final Request req, final Repo repo) {

         this.entry = req;

         final Coordinates coords = repo.coordinates();

         this.request = this.entry.uri()

             .path("/repos")

             .path(coords.user())

             .path(coords.repo())

             .path("/pulls")

             .back();

         this.owner = repo;

     }

     @Override

     public String toString() {

         return this.request.uri().get().toString();

     }

     @Override

     public Repo repo() {

         return this.owner;

     }

     @Override

     public Pull get(final int number) {

         return new RtPull(this.entry, this.owner, number);

     }

     @Override

     public Pull create(

         final String title,

         final String head,

         final String base)

         throws IOException {

         final JsonStructure json = Json.createObjectBuilder()

             .add("title", title)

             .add("head", head)

             .add("base", base)

             .build();

         return this.get(

             this.request.method(Request.POST)

                 .body().set(json).back()

                 .fetch().as(RestResponse.class)

                 .assertStatus(HttpURLConnection.HTTP_CREATED)

                 .as(JsonResponse.class)

                 .json().readObject().getInt("number")

         );

     }

     @Override

     public Iterable<Pull> iterate(final Map<String, String> params) {

         return new RtPagination<Pull>(

             this.request.uri().queryParams(params).back(),

             new RtValuePagination.Mapping<Pull, JsonObject>() {

                 @Override

                 public Pull map(final JsonObject object) {

                     return RtPulls.this.get(object.getInt("number"));

                 }

             }

         );

     }

 }