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    * to you under the Apache License, Version 2.0 (the            *
    * "License"); you may not use this file except in compliance   *
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  package org.apache.james.userrepository;
  
  import org.apache.james.security.DigestUtil;
  import org.apache.james.services.User;
  import org.apache.james.services.UsersRepository;
  
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.LinkedList;
  import java.util.List;
  
  public class MockUsersRepository implements UsersRepository {
  
      private final HashMap m_users = new HashMap();
  
      /***
       * force the repository to hold implementations of JamesUser interface, instead of User
       * JamesUser is _not_ required as of the UsersRepository interface, so the necessarity forcing it
       * is due to code using UsersRepository while at the same time expecting it to hold JamesUsers
       * (like in RemoteManagerHandler) 
       */
      private boolean m_forceUseJamesUser = false;
  
      public void setForceUseJamesUser() {
          m_forceUseJamesUser = true;
      }
  
      public boolean addUser(User user) {
  
          if (m_forceUseJamesUser && user instanceof DefaultUser ) {
              DefaultUser aUser = (DefaultUser)user;
              user = new DefaultJamesUser(aUser.getUserName(),
                                               aUser.getHashedPassword(),
                                               aUser.getHashAlgorithm());
          }
  
          String key = user.getUserName();
          if (m_users.containsKey(key)) return false;
          m_users.put(key, user);
          return true;
      }
  
      public void addUser(String name, Object attributes) {
          try {
              String passwordHash = DigestUtil.digestString(((String) attributes), "SHA");
  
              User user;
  
              if (m_forceUseJamesUser) {
                  user = new DefaultJamesUser(name, passwordHash, "SHA");
              } else {
                  user = new DefaultUser(name, passwordHash, "SHA");
              }
             
              addUser(user);
          } catch (Exception e) {
              e.printStackTrace();  // encoding failed
          }
      }
  
      public boolean addUser(String username, String password) {
          if (m_users.containsKey(username)) return false;
          try {
              String passwordHash = DigestUtil.digestString((password), "SHA");
  
              User user;
  
              if (m_forceUseJamesUser) {
                  user = new DefaultJamesUser(username, passwordHash, "SHA");
              } else {
                  user = new DefaultUser(username, passwordHash, "SHA");
              }
             
              return addUser(user);
          } catch (Exception e) {
              e.printStackTrace();  // encoding failed
          }
          return false;
      }
  
      public Object getAttributes(String name) {
         return null;  // trivial implementation
     }
 
     public User getUserByName(String name) {
         return (User) m_users.get(name);
     }
 
     public User getUserByNameCaseInsensitive(String name) {
         return null;  // trivial implementation
     }
 
     public String getRealName(String name) {
         return ((User) m_users.get(name)).getUserName();
     }
 
     public boolean updateUser(User user) {
         return false;  // trivial implementation
     }
 
     public void removeUser(String name) {
         m_users.remove(name);
     }
 
     public boolean contains(String name) {
         return m_users.containsKey(name);
     }
 
     public boolean containsCaseInsensitive(String name) {
         return false;  // trivial implementation
     }
 
     public boolean test(String name, Object attributes) {
         return false;  // trivial implementation
     }
 
     public boolean test(String name, String password) {
         User user = getUserByName(name);
         if (user == null) return false;
         return user.verifyPassword(password);
     }
 
     public int countUsers() {
         return m_users.size();
     }
 
     protected List listUserNames() {
         Iterator users = m_users.values().iterator();
         List userNames = new LinkedList();
         while ( users.hasNext() ) {
             User user = (User)users.next();
             userNames.add(user.getUserName());
         }
 
         return userNames;
     }
     public Iterator list() {
         return listUserNames().iterator(); 
     }
 }