/*
    * 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.json;
  
  import com.atlassian.jira.rest.client.api.RestClientException;
  import com.atlassian.jira.rest.client.api.domain.BasicProjectRole;
  import com.google.common.base.Function;
  import com.google.common.collect.ImmutableSet;
  import com.google.common.collect.Iterators;
  import org.codehaus.jettison.json.JSONException;
  import org.codehaus.jettison.json.JSONObject;
  
  import javax.annotation.Nullable;
  import java.util.Collection;
  
  public class BasicProjectRoleJsonParser implements JsonObjectParser<Collection<BasicProjectRole>> {
  
      @Override
      public Collection<BasicProjectRole> parse(@Nullable final JSONObject json) throws JSONException {
          return json == null ?
                  ImmutableSet.<BasicProjectRole>of() :
                  ImmutableSet.copyOf(Iterators.transform(
                          JsonParseUtil.getStringKeys(json),
                          new Function<String, BasicProjectRole>() {
                              @Override
                              public BasicProjectRole apply(@Nullable final String key) {
                                  try {
                                      return new BasicProjectRole(JsonParseUtil.parseURI(json.getString(key)), key);
                                  } catch (JSONException e) {
                                      throw new RestClientException(e);
                                  }
                              }
                          }
                  ));
      }
  
  
  }