/**
 * Copyright (c) 2013-2015, 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 javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonObjectBuilder;
import javax.json.JsonStructure;
import javax.validation.constraints.NotNull;
import lombok.EqualsAndHashCode;
import org.hamcrest.Matchers;

/**
 * Github pull request.
 *
 * @author Yegor Bugayenko (yegor@tpc2.com)
 * @version $Id$
 * @since 0.3
 * @checkstyle MultipleStringLiterals (500 lines)
 */
@Immutable
@Loggable(Loggable.DEBUG)
@EqualsAndHashCode(of = { "request", "owner", "num" })
@SuppressWarnings("PMD.TooManyMethods")
final class RtPull implements Pull {

    /**
     * API entry point.
     */
    private final transient Request entry;

    /**
     * RESTful request.
     */
    private final transient Request request;

    /**
     * Repository we're in.
     */
    private final transient Repo owner;

    /**
     * Pull request number.
     */
    private final transient int num;

    /**
     * Public ctor.
     * @param req Request
     * @param repo Repository
     * @param number Number of the get
     */
    RtPull(final Request req, final Repo repo, final int number) {
        this.entry = req;
        final Coordinates coords = repo.coordinates();
        this.request = this.entry.uri()
            .path("/repos")
            .path(coords.user())
            .path(coords.repo())
            .path("/pulls")
            .path(Integer.toString(number))
            .back();
        this.owner = repo;
        this.num = number;
    }

    @Override
    @NotNull(message = "toString is never NULL")
    public String toString() {
        return this.request.uri().get().toString();
    }

    @Override
    @NotNull(message = "repository is never NULL")
    public Repo repo() {
        return this.owner;
    }

    @Override
    public int number() {
        return this.num;
    }

    @Override
    @NotNull(message = "Iterable of commits is never NULL")
    public Iterable<Commit> commits() throws IOException {
        return new RtPagination<Commit>(
            this.request.uri().path("/commits").back(),
            new RtValuePagination.Mapping<Commit, JsonObject>() {
                @Override
                public Commit map(final JsonObject object) {
                    return new RtCommit(
                        RtPull.this.entry,
                        RtPull.this.owner,
                        object.getString("sha")
                    );
                }
            }
        );
    }

    @Override
    @NotNull(message = "Iterable of files is never NULL")
    public Iterable<JsonObject> files() throws IOException {
        return this.request
            .uri().path("/files").back()
            .fetch().as(RestResponse.class)
            .assertStatus(HttpURLConnection.HTTP_OK)
            .as(JsonResponse.class)
            .json().readArray().getValuesAs(JsonObject.class);
    }

    @Override
    public void merge(
        @NotNull(message = "message can't be NULL") final String msg)
        throws IOException {
        final JsonStructure json = Json.createObjectBuilder()
            .add("commit_message", msg)
            .build();
        this.request
            .uri().path("/merge").back()
            .body().set(json).back()
            .method(Request.PUT)
            .fetch()
            .as(RestResponse.class)
            .assertStatus(HttpURLConnection.HTTP_OK);
    }

    @Override
    public MergeState merge(
        @NotNull(message = "message can't be NULL") final String msg,
        final String sha) throws IOException {
        final JsonObjectBuilder builder = Json.createObjectBuilder()
            .add("commit_message", msg);
        if (sha != null) {
            builder.add("sha", sha);
        }
        final RestResponse response = this.request
            .uri().path("/merge").back()
            .body().set(builder.build()).back()
            .method(Request.PUT)
            .fetch()
            .as(RestResponse.class)
            .assertStatus(
                Matchers.isOneOf(
                    HttpURLConnection.HTTP_OK,
                    HttpURLConnection.HTTP_BAD_METHOD,
                    HttpURLConnection.HTTP_CONFLICT
                )
            );
        final MergeState mergeState;
        switch (response.status()) {
            case HttpURLConnection.HTTP_OK:
                mergeState = MergeState.SUCCESS;
                break;
            case HttpURLConnection.HTTP_BAD_METHOD:
                mergeState = MergeState.NOT_MERGEABLE;
                break;
            default:
                mergeState = MergeState.BAD_HEAD;
        }
        return mergeState;
    }

    @Override
    @NotNull(message = "PullComments is never NULL")
    public PullComments comments() throws IOException {
        return new RtPullComments(this.entry, this);
    }

    @Override
    @NotNull(message = "JSON is never NULL")
    public JsonObject json() throws IOException {
        return new RtJson(this.request).fetch();
    }

    @Override
    public void patch(@NotNull(message = "JSON can't be NULL")
        final JsonObject json) throws IOException {
        new RtJson(this.request).patch(json);
    }

    @Override
    public int compareTo(
        @NotNull(message = "pull can't be NULL") final Pull pull
    ) {
        return this.number() - pull.number();
    }

}

@@ -6004,18 +6004,10 @@
     
-    )%0A    
+)%0A
     

Fix lint