/*
    * Copyright (C) 2011 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.domain.Visibility;
  import org.codehaus.jettison.json.JSONException;
  import org.codehaus.jettison.json.JSONObject;
  
  import javax.annotation.Nullable;
  
  public class VisibilityJsonParser implements JsonObjectParser<Visibility> {
      private static final String ROLE_TYPE = "ROLE";
      private static final String GROUP_TYPE = "GROUP";
  
      @Override
      public Visibility parse(JSONObject json) throws JSONException {
          final String type = json.getString("type");
          final Visibility.Type visibilityType;
          if (ROLE_TYPE.equalsIgnoreCase(type)) {
              visibilityType = Visibility.Type.ROLE;
          } else if (GROUP_TYPE.equalsIgnoreCase(type)) {
              visibilityType = Visibility.Type.GROUP;
          } else {
              throw new JSONException("[" + type + "] does not represent a valid visibility type. Expected ["
                      + ROLE_TYPE + "] or [" + GROUP_TYPE + "].");
          }
          final String value = json.getString("value");
          return new Visibility(visibilityType, value);
      }
  
      @Nullable
      public Visibility parseVisibility(JSONObject parentObject) throws JSONException {
          if (parentObject.has(CommentJsonParser.VISIBILITY_KEY)) { // JIRA 4.3-rc1 and newer
              return parse(parentObject.getJSONObject(CommentJsonParser.VISIBILITY_KEY));
          }
  
          String roleLevel = parentObject.optString("roleLevel", null);
          // in JIRA 4.2 "role" was used instead
          if (roleLevel == null) {
              roleLevel = JsonParseUtil.getOptionalString(parentObject, "role");
          }
  
          if (roleLevel != null) {
              return Visibility.role(roleLevel);
          }
  
          final String groupLevel = parentObject.optString("groupLevel", null);
          if (groupLevel != null) {
              return Visibility.group(groupLevel);
          }
          return null;
      }
  }