/*
 * Copyright 2005 the original author or authors.
 * 
 * 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 org.wamblee.usermgt;

import static org.wamblee.usermgt.UserMgtException.Reason.DUPLICATE_USER;

import org.wamblee.security.encryption.MessageDigester;

/**
 * User set base class. 
 */
public abstract class AbstractUserSet implements UserSet {
    
    /**
     * Password validator. 
     */
    private NameValidator _passwordValidator; 
    
    /**
     * Password encoder. 
     */
    private MessageDigester _passwordEncoder; 

    
    protected AbstractUserSet(NameValidator aPasswordValidator, 
            MessageDigester aPasswordEncoder) { 
        _passwordValidator = aPasswordValidator;
        _passwordEncoder = aPasswordEncoder;
    }
    
    /**
     * Sets the password validtor and encoder in the user. 
     * @param aUser User. 
     */
    protected void setPasswordInfo(User aUser) { 
        aUser.setPasswordValidator(_passwordValidator);
        aUser.setPasswordEncoder(_passwordEncoder);
    }

    /* (non-Javadoc)
     * @see org.wamblee.usermgt.UserSet#createUser(java.lang.String, java.lang.String, org.wamblee.usermgt.Group)
     */
    public User createUser(String aUsername, String aPassword, Group aGroup) throws UserMgtException {
        User user = new User(aUsername, aPassword, aGroup, _passwordValidator, _passwordEncoder);
        if (contains(user)) {
            throw new UserMgtException(DUPLICATE_USER, user);
        }
        add(user);
        return user;
    }
}