/**
    * Copyright (c) 2009-2010 by Glodon
    * All rights reserved.
    */
   package gboat2.base.bridge.model;
   
   import java.io.Serializable;
   import java.util.HashMap;
   import java.util.HashSet;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * 该类主要是对权限进行管理操作
   * @author lysming
   * @since 1.0
   */
  public class Priority implements Serializable {
  
      private static final long serialVersionUID = 1620492035834167297L;
  
      /** 表示具action所有操作权限的标记 */
      private static final String ALL_OPERATIONS = "#all";
  
      /** 具有权限的Actions，只包含权限信息，格式为 "resourceActionClass.operationCode" */
      private List<String> operationPriority = new LinkedList<String>();
  
      /** 格式为 actionClass => dataLevelCode */
      private Map<String, String> dataLevelPriority = new HashMap<String, String>();
  
      /** 默认数据级别 */
      private String defaultDataLevel;
  
      /**
       * 构造方法
       * @param defaultDataLevel 数据级别
       */
      public Priority(String defaultDataLevel) {
          this.defaultDataLevel = defaultDataLevel;
      }
  
      /**
       * add an operation priority
       * 
       * @param actionClass Action 类的名称
       * @param operationCode 操作的 code
       */
      public void addOperationPriority(String actionClass, String operationCode) {
      	String allOperations = actionClass + "." +ALL_OPERATIONS;
      	if(operationPriority.contains(allOperations)){
      		operationPriority.remove(allOperations);
      	}
          operationPriority.add(actionClass + "." + operationCode);
      }
  
      /**
       * add an operation priority, means that add all operation priorities of
       * actionClass
       * 
       * @param actionClass Action 类的名称
       */
      public void addAllOperationPriorityOf(String actionClass) {
          operationPriority.add(actionClass + "." + ALL_OPERATIONS);
      }
      
      /**
       * delete actionClass's all operation priorities
       * @param actionClass
       */
      public void removeAllOperationProrityOf(String actionClass) {
      	operationPriority.add(actionClass + "." + ALL_OPERATIONS);
      }
  
      /**
       * 添加数据权限
       * 
       * @param actionClass 相应的action class
       * @param dataLevelCode 数据权限代码
       */
      public void addDataPriority(String actionClass, String dataLevelCode) {
          dataLevelPriority.put(actionClass, dataLevelCode);
      }
  
      /**
       * 判断是否具有 Operation 的权限
       * 
       * @param res 访问的操作
       * @return boolean
       */
      public boolean havePriority(Resource res) {
          if (operationPriority.contains(res.getActionClass() + "." + res.getOperationCode())) {
              return true;
          } else {
              return operationPriority.contains(res.getActionClass() + "." + ALL_OPERATIONS);
          }
      }
  
     /**
      * @param resourceCode the actionClass name
      * @return
      */
     public String getDataLevelCode(String resourceCode) {
         if (dataLevelPriority.containsKey(resourceCode)) {
             return dataLevelPriority.get(resourceCode);
         }
         return defaultDataLevel;
     }
 
     public String getDefaultDataLevel() {
         return defaultDataLevel;
     }
 
     /**
      * 获取当前用户所拥有权限的所有action类集合
      * 
      * @return action类全名组成的集合
      */
     public Set<String> getPriorityActionNames() {
         Set<String> actions = new HashSet<String>();
         for (String priority : operationPriority) {
             actions.add(priority.substring(0, priority.lastIndexOf('.')));
         }
         return actions;
     }
     
     public List<String> getOperationPriorities(){
     	return this.operationPriority;
     }
     
     public Map<String,String> getDataLevelPriorities(){
     	return this.dataLevelPriority;
     }
     
     public void appendPriority(Priority priority){
     	operationPriority.addAll(priority.getOperationPriorities());
     	//TODO 检查权限级别冲突的问题
     	dataLevelPriority.putAll(priority.getDataLevelPriorities());
     }
 }