/**

  * 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.ArrayList;

 import java.util.Collection;

 import java.util.List;

 import javax.json.Json;

 import javax.json.JsonArrayBuilder;

 import javax.json.JsonObject;

 import lombok.EqualsAndHashCode;

 /**

  * Github user's emails.

  * @author Alexander Sinyagin (sinyagin.alexander@gmail.com)

  * @version $Id: c01ee0044df6c0230202b8ffb31cff55ff471ea2 $

  * @since 0.8

  */

 @Immutable

 @Loggable(Loggable.DEBUG)

 @EqualsAndHashCode(of = "request")

 final class RtUserEmails implements UserEmails {

     /**

      * RESTful API request for the emails.

      */

     private final transient Request request;

     /**

      * Ctor.

      * @param req RESTful API entry point

      */

     RtUserEmails(final Request req) {

         this.request = req.header("Accept", "application/vnd.github.v3")

             .uri().path("/user/emails").back();

     }

     @Override

     public Iterable<String> iterate() throws IOException {

         final List<JsonObject> array = this.request.method(Request.GET)

             .fetch().as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_OK)

             .as(JsonResponse.class)

             .json().readArray().getValuesAs(JsonObject.class);

         final Collection<String> emails = new ArrayList<String>(array.size());

         for (final JsonObject obj : array) {

             // @checkstyle MultipleStringLiterals (1 line)

             emails.add(obj.getString("email"));

         }

         return emails;

     }

     @Override

     public Iterable<String> add(

         final Iterable<String> emails

     ) throws IOException {

         final JsonArrayBuilder json = Json.createArrayBuilder();

         for (final String email : emails) {

             json.add(email);

         }

         final List<JsonObject> array = this.request.method(Request.POST)

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

             .fetch().as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_CREATED)

             .as(JsonResponse.class)

             .json().readArray().getValuesAs(JsonObject.class);

         final Collection<String> result = new ArrayList<String>(array.size());

         for (final JsonObject obj : array) {

             result.add(obj.getString("email"));

         }

         return result;

     }

     @Override

     public void remove(final Iterable<String> emails) throws IOException {

         final JsonArrayBuilder json = Json.createArrayBuilder();

         for (final String email : emails) {

             json.add(email);

         }

         this.request.method(Request.DELETE)

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

             .fetch().as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_NO_CONTENT);

     }

     @Override

     public String toString() {

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

     }

     @Override

     public JsonObject json() throws IOException {

         return new RtJson(this.request).fetch();

     }

 }