org.llorllale.youtrack.api.DefaultIssues Maven / Gradle / Ivy

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Fluent, object-oriented Java API for YouTrack.
There is a newer version: 1.1.0-rc59
/*
 * Copyright 2017 George Aristy.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.llorllale.youtrack.api;

import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Stream;

import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.impl.client.HttpClients;

import org.llorllale.youtrack.api.session.Session;
import org.llorllale.youtrack.api.session.UnauthorizedException;

/**
 * Default implementation of {@link Issues}.
 * 
 * @author George Aristy ([email protected])
 * @since 0.4.0
 */
class DefaultIssues implements Issues {
  private final Project project;
  private final Session session;
  private final HttpClient httpClient;

  /**
   * Primary ctor.
   * 
   * @param project the parent {@link Project}
   * @param session the user {@link Session}
   * @param httpClient the {@link HttpClient} to use
   * @since 0.4.0
   */
  DefaultIssues(Project project, Session session, HttpClient httpClient) {
    this.project = project;
    this.session = session;
    this.httpClient = httpClient;
  }

  /**
   * Uses the {@link HttpClients#createDefault() default} httpClient.
   * 
   * @param project the parent {@link Project}
   * @param session the user {@link Session}
   * @see #DefaultIssues(Project, Session, HttpClient) 
   * @since 0.4.0
   */
  DefaultIssues(Project project, Session session) {
    this(project, session, HttpClients.createDefault());
  }

  @Override
  public Project project() {
    return this.project;
  }

  @Override
  public Stream stream() throws IOException, UnauthorizedException {
    final int pageSize = 10;
    return new StreamOf<>(
        new Pagination<>(
            pageSize,
            n -> new HttpRequestWithSession(
                this.session, 
                new HttpGet(
                    new UncheckedUriBuilder(
                        this.session.baseUrl().toString()
                            .concat("/issue/byproject/")
                            .concat(this.project().id())
                    ).param("after", String.valueOf(n))
                        .build()
                )
            ),
            resp -> 
                new MappedCollection<>(
                    xml -> new XmlIssue(this.project(), this.session, xml),
                    new XmlsOf("/issues/issue", resp)
                ),
            this.httpClient
        )
    );
  }

  @Override
  public Optional get(String issueId) throws IOException, UnauthorizedException {
    //when the issueId does not exist, YouTrack returns a 404 response with an error XML
    //in the payload
    return Optional.of(
        new XmlOf(
            new HttpResponseAsResponse(
                this.httpClient.execute(
                    new HttpRequestWithSession(
                        this.session, 
                        new HttpGet(
                            this.session.baseUrl().toString().concat("/issue/").concat(issueId)
                        )
                    )
                )
            )
        )
    ).filter(x -> !x.child("//error").isPresent())
        .map(x -> new XmlIssue(this.project(), this.session, x));
  }

  @Override
  public Issue create(String summary, String description) 
      throws IOException, UnauthorizedException {
    return this.create(summary, description, Collections.emptyMap());
  }

  @Override
  public Issue create(String summary, String description, Map fields) 
      throws IOException, UnauthorizedException {
    return this.get(
        new SubstringAfterLast(
            new HttpResponseAsResponse(
                this.httpClient.execute(
                    new HttpRequestWithSession(
                        this.session, 
                        new HttpPut(
                            new UncheckedUriBuilder(
                                this.session.baseUrl().toString().concat("/issue")
                            ).param("project", this.project().id())
                                .param("summary", summary)
                                .paramIfPresent("description", Optional.ofNullable(description))
                                .build()
                        )
                    )
                )
            ).httpResponse().getFirstHeader("Location").getValue(),
            "/"
        ).get()
    ).get().update().fields(fields);
  }
}