/**

  * 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;

 import com.jcabi.http.response.JsonResponse;

 import com.jcabi.http.response.RestResponse;

 import java.io.IOException;

 import java.net.HttpURLConnection;

 import java.net.URI;

 import javax.json.Json;

 import javax.json.JsonObject;

 import javax.json.JsonObjectBuilder;

 import lombok.EqualsAndHashCode;

 import org.hamcrest.Matchers;

 /**

  * Github gist.

  *

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

  * @version $Id: a25eea6a0d643b6d962602c8d14d41aedaa2f269 $

  * @since 0.1

  * @checkstyle MultipleStringLiterals (500 lines)

  */

 @Immutable

 @Loggable(Loggable.DEBUG)

 @EqualsAndHashCode(of = { "ghub", "request" })

 @SuppressWarnings("PMD.TooManyMethods")

 final class RtGist implements Gist {

     /**

      * RESTful request for the gist.

      */

     private final transient Request request;

     /**

      * Github.

      */

     private final transient Github ghub;

     /**

      * RESTful entry.

      */

     private final transient Request entry;

     /**

      * Gist id.

      */

     private final transient String gist;

     /**

      * Public ctor.

      * @param github Github

      * @param req Request

      * @param name Name of gist

      */

     RtGist(final Github github, final Request req, final String name) {

         this.ghub = github;

         this.entry = req;

         this.gist = name;

         this.request = req.uri().path("/gists").path(name).back();

     }

     @Override

     public String toString() {

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

     }

     @Override

     public Github github() {

         return this.ghub;

     }

     @Override

     public String identifier() {

         return this.gist;

     }

     @Override

     public String read(final String file) throws IOException {

         final Response response = this.request.fetch();

         final String url = response

             .as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_OK)

             .as(JsonResponse.class)

             .json().readObject().getJsonObject("files")

             .getJsonObject(file).getString("raw_url");

         return response

             .as(RestResponse.class)

             .jump(URI.create(url))

             .fetch()

             .as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_OK)

             .body();

     }

     @Override

     public void write(

         final String file,

         final String content)

         throws IOException {

         final JsonObjectBuilder builder = Json.createObjectBuilder()

             .add("content", content);

         final JsonObject json = Json.createObjectBuilder()

             .add("files", Json.createObjectBuilder().add(file, builder))

             .build();

         this.patch(json);

     }

     @Override

     public void star() throws IOException {

         this.request.uri().path("star").back()

             .method("PUT")

             .fetch().as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_NO_CONTENT);

     }

     @Override

     public void unstar() throws IOException {

         this.request.uri().path("star").back()

             .method(Request.DELETE)

             .fetch().as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_NO_CONTENT);

     }

     @Override

     public boolean starred() throws IOException {

         return this.request.uri().path("star").back()

             .method("GET").fetch()

             .as(RestResponse.class).assertStatus(

                 Matchers.isOneOf(

                     HttpURLConnection.HTTP_NO_CONTENT,

                     HttpURLConnection.HTTP_NOT_FOUND

             )

         ).status() == HttpURLConnection.HTTP_NO_CONTENT;

     }

     @Override

     public Gist fork() throws IOException {

         return new RtGist(

             this.ghub, this.entry,

             this.request.uri().path("/forks").back()

                 .method(Request.POST)

                 .fetch().as(RestResponse.class)

                 .assertStatus(HttpURLConnection.HTTP_CREATED)

                 .as(JsonResponse.class)

                 .json().readObject().getString("id")

         );

     }

     @Override

     public JsonObject json() throws IOException {

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

     }

     @Override

     public GistComments comments() throws IOException {

         return new RtGistComments(this.entry, this);

     }

     @Override

     public void patch(final JsonObject json) throws IOException {

         new RtJson(this.request).patch(json);

     }

 }