/**
    * Copyright 2004-2012 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.hr.time.util;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.servlet.http.HttpServletRequest;
  
  import org.kuali.hr.time.timesheet.TimesheetDocument;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  public class TKContext {
  
      private static final String TDOC_OBJ_KEY = "_TDOC_O_KEY";
      private static final String TDOC_KEY = "_TDOC_ID_KEY"; // Timesheet Document ID Key
  	//private static final String USER_KEY = "_USER_KEY";
  
  	private static final ThreadLocal<Map<String, Object>> STORAGE_MAP = new ThreadLocal<Map<String, Object>>() {
  		@Override
  		protected Map<String, Object> initialValue() {
  			return Collections.synchronizedMap(new HashMap<String, Object>());
  		}
  	};
  
      public static TimesheetDocument getCurrentTimesheetDocument() {
          return (TimesheetDocument)TKContext.getStorageMap().get(TDOC_OBJ_KEY);
      }
  
      public static void setCurrentTimesheetDocument(TimesheetDocument tdoc) {
          TKContext.getStorageMap().put(TDOC_OBJ_KEY, tdoc);
      }
  
      /**
       * @return The current timesheet document id, as set by the detail/clock
       * pages.
       */
      public static String getCurrentTimesheetDocumentId() {
          return (String)TKContext.getStorageMap().get(TDOC_KEY);
      }
  
      /**
       * Set the current timesheet document id.
       * @param timesheetDocumentId The ID we are setting this value to.
       */
      public static void setCurrentTimesheetDocumentId(String timesheetDocumentId) {
          TKContext.getStorageMap().put(TDOC_KEY, timesheetDocumentId);
      }
  
  	/**
  	 * TKUser has the internal concept of Backdoor User vs.Actual User.
  	 * @return
  	 */
  	public static TKUser getUser() {
          //TODO, this method isn't needed if everything in TKUser is accessed in a static fashion...
          return new TKUser();
  		//return (TKUser) GlobalVariables.getUserSession().retrieveObject(USER_KEY);
  	}
  
  	//public static void setUser(TKUser user) {
  	//	GlobalVariables.getUserSession().addObject(USER_KEY, user);
  	//}
  
  	public static String getPrincipalId(){
  		return GlobalVariables.getUserSession().getPrincipalId();
  	}
  
      public static String getTargetPrincipalId() {
          return TKUser.getCurrentTargetPerson().getPrincipalId();
      }
  
  	public static HttpServletRequest getHttpServletRequest() {
  		return (HttpServletRequest) getStorageMap().get("REQUEST");
  	}
  
  	public static void setHttpServletRequest(HttpServletRequest request) {
  		getStorageMap().put("REQUEST", request);
  	}
  
  	public static Map<String, Object> getStorageMap() {
  		return STORAGE_MAP.get();
  	}
  
  	public static void resetStorageMap() {
  		STORAGE_MAP.remove();
 	}
 
 	public static void clear() {
 		resetStorageMap();
 	}
 }