/*
    * Copyright (C) 2012 Atlassian
    *
    * 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 com.atlassian.jira.rest.client.internal.async;
  
  import com.atlassian.httpclient.api.HttpClient;
  import com.atlassian.jira.rest.client.api.ComponentRestClient;
  import com.atlassian.jira.rest.client.api.domain.Component;
  import com.atlassian.jira.rest.client.api.domain.input.ComponentInput;
  import com.atlassian.jira.rest.client.internal.domain.input.ComponentInputWithProjectKey;
  import com.atlassian.jira.rest.client.internal.json.ComponentJsonParser;
  import com.atlassian.jira.rest.client.internal.json.JsonObjectParser;
  import com.atlassian.jira.rest.client.internal.json.gen.ComponentInputWithProjectKeyJsonGenerator;
  import com.atlassian.util.concurrent.Promise;
  import org.codehaus.jettison.json.JSONException;
  import org.codehaus.jettison.json.JSONObject;
  
  import javax.annotation.Nullable;
  import javax.ws.rs.core.UriBuilder;
  import java.net.URI;
  
  /**
   * Asynchronous implementation of ComponentRestClient.
   *
   * @since v2.0
   */
  public class AsynchronousComponentRestClient extends AbstractAsynchronousRestClient implements ComponentRestClient {
  
      private final ComponentJsonParser componentJsonParser = new ComponentJsonParser();
      private final URI componentUri;
  
      public AsynchronousComponentRestClient(final URI baseUri, final HttpClient client) {
          super(client);
          componentUri = UriBuilder.fromUri(baseUri).path("component").build();
      }
  
      @Override
      public Promise<Component> getComponent(final URI componentUri) {
          return getAndParse(componentUri, componentJsonParser);
      }
  
      @Override
      public Promise<Component> createComponent(final String projectKey, final ComponentInput componentInput) {
          final ComponentInputWithProjectKey helper = new ComponentInputWithProjectKey(projectKey, componentInput);
          return postAndParse(componentUri, helper, new ComponentInputWithProjectKeyJsonGenerator(), componentJsonParser);
      }
  
      @Override
      public Promise<Component> updateComponent(URI componentUri, ComponentInput componentInput) {
          final ComponentInputWithProjectKey helper = new ComponentInputWithProjectKey(null, componentInput);
          return putAndParse(componentUri, helper, new ComponentInputWithProjectKeyJsonGenerator(), componentJsonParser);
      }
  
      @Override
      public Promise<Void> removeComponent(URI componentUri, @Nullable URI moveIssueToComponentUri) {
          final UriBuilder uriBuilder = UriBuilder.fromUri(componentUri);
          if (moveIssueToComponentUri != null) {
              uriBuilder.queryParam("moveIssuesTo", moveIssueToComponentUri);
          }
          return delete(uriBuilder.build());
      }
  
      @Override
      public Promise<Integer> getComponentRelatedIssuesCount(URI componentUri) {
          final URI relatedIssueCountsUri = UriBuilder.fromUri(componentUri).path("relatedIssueCounts").build();
          return getAndParse(relatedIssueCountsUri, new JsonObjectParser<Integer>() {
              @Override
              public Integer parse(JSONObject json) throws JSONException {
                  return json.getInt("issueCount");
              }
          });
      }
  }