/**

  * 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.mock;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.github.Coordinates;

 import com.jcabi.github.Github;

 import com.jcabi.github.Issue;

 import com.jcabi.github.Issues;

 import com.jcabi.github.Repo;

 import com.jcabi.github.Search;

 import com.jcabi.log.Logger;

 import com.jcabi.xml.XML;

 import java.io.IOException;

 import java.util.EnumMap;

 import java.util.HashMap;

 import java.util.Map;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 import org.xembly.Directives;

 /**

  * Mock Github issues.

  *

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

  * @version $Id: f622adca47557c17fc1097bc97423dec683df85f $

  * @since 0.5

  */

 @Immutable

 @Loggable(Loggable.DEBUG)

 @ToString

 @EqualsAndHashCode(of = { "storage", "self", "coords" })

 final class MkIssues implements Issues {

     /**

      * Storage.

      */

     private final transient MkStorage storage;

     /**

      * Login of the user logged in.

      */

     private final transient String self;

     /**

      * Repo name.

      */

     private final transient Coordinates coords;

     /**

      * Public ctor.

      * @param stg Storage

      * @param login User to login

      * @param rep Repo

      * @throws IOException If there is any I/O problem

      */

     MkIssues(

         final MkStorage stg,

         final String login,

         final Coordinates rep

     ) throws IOException {

         this.storage = stg;

         this.self = login;

         this.coords = rep;

         this.storage.apply(

             new Directives().xpath(

                 String.format(

                     "/github/repos/repo[@coords='%s']",

                     this.coords

                 )

             ).addIf("issues")

         );

     }

     @Override

     public Repo repo() {

         return new MkRepo(this.storage, this.self, this.coords);

     }

     @Override

     public Issue get(final int number) {

         return new MkIssue(this.storage, this.self, this.coords, number);

     }

     @Override

     public Issue create(final String title,

         final String body

     )

         throws IOException {

         this.storage.lock();

         final int number;

         try {

             number = 1 + this.storage.xml().xpath(

                 String.format("%s/issue/number/text()", this.xpath())

             ).size();

             this.storage.apply(

                 new Directives().xpath(this.xpath()).add("issue")

                     .add("number").set(Integer.toString(number)).up()

                     .add("state").set(Issue.OPEN_STATE).up()

                     .add("title").set(title).up()

                     .add("body").set(body).up()

                     .add("created_at").set(new Github.Time().toString()).up()

                     .add("updated_at").set(new Github.Time().toString()).up()

                     .add("url").set("http://localhost/1").up()

                     .add("html_url").set("http://localhost/2").up()

                     .add("user").add("login").set(this.self).up().up()

             );

         } finally {

             this.storage.unlock();

         }

         Logger.info(

             this, "issue #%d created in %s by %s: %[text]s",

             number, this.repo().coordinates(), this.self, title

         );

         return this.get(number);

     }

     @Override

     public Iterable<Issue> iterate(final Map<String, String> params

     ) {

         return new MkIterable<Issue>(

             this.storage,

             String.format("%s/issue", this.xpath()),

             new MkIterable.Mapping<Issue>() {

                 @Override

                 public Issue map(final XML xml) {

                     return MkIssues.this.get(

                         Integer.parseInt(xml.xpath("number/text()").get(0))

                     );

                 }

             }

         );

     }

     @Override

     @SuppressWarnings("PMD.UseConcurrentHashMap")

     public Iterable<Issue> search(

         final Sort sort,

         final Search.Order direction,

         final EnumMap<Qualifier, String> qualifiers)

         throws IOException {

         final Map<String, String> params = new HashMap<String, String>();

         for (final EnumMap.Entry<Qualifier, String> entry : qualifiers

             .entrySet()) {

             params.put(entry.getKey().identifier(), entry.getValue());

         }

         params.put("sort", sort.identifier());

         params.put("direction", direction.identifier());

         return this.iterate(params);

     }

     /**

      * XPath of this element in XML tree.

      * @return XPath

      */

     private String xpath() {

         return String.format(

             "/github/repos/repo[@coords='%s']/issues",

             this.coords

         );

     }

 }