/**
    * Copyright 2010-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.common.util;
  
  import org.apache.commons.lang3.StringUtils;
  
  public class OrgUtils {
  
  	/**
  	 * Given {@code org.kuali} return {@code kuali}
  	 */
  	public static final String getOrgCode(String organizationGroupId) {
  		int pos = StringUtils.lastIndexOf(organizationGroupId, ".");
  		if (pos == -1) {
  			return organizationGroupId;
  		} else {
  			return StringUtils.substring(organizationGroupId, pos + 1);
  		}
  	}
  
  	/**
  	 * Given {@code org.kuali} and {@code org.kuali.rice} return {@code rice}<br>
  	 * Given {@code org.kuali} and {@code org.kuali.student.web} return {@code student}<br>
  	 */
  	public static final String getGroupCode(String organizationGroupId, String groupId) {
  		if (!StringUtils.startsWith(groupId, organizationGroupId)) {
  			throw new IllegalArgumentException(groupId + " does not start with " + organizationGroupId);
  		}
  		String code = StringUtils.remove(groupId, organizationGroupId);
  		if (StringUtils.startsWith(code, ".")) {
  			code = StringUtils.substring(code, 1);
  		}
  		int pos = StringUtils.indexOf(code, ".");
  		if (pos != -1) {
  			code = StringUtils.substring(code, 0, pos);
  		}
  		return code;
  	}
  
  	/**
  	 * Given {@code org.kuali} and {@code org.kuali.student.web} return {@code org.kuali.student}<br>
  	 */
  	public static final String getGroupBase(String organizationGroupId, String groupId) {
  		return organizationGroupId + "." + getGroupCode(organizationGroupId, groupId);
  	}
  
  }