/*
 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/auth/UsernamePasswordCredentials.java $
 * $Revision: 658430 $
 * $Date: 2008-05-20 14:04:27 -0700 (Tue, 20 May 2008) $
 *
 * ====================================================================
 *
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.auth;

import java.security.Principal;

import org.apache.http.util.LangUtils;

/**
 * Username and password {@link Credentials}
 *
 * @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
 * @author Sean C. Sullivan
 * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
 * 
 * @version $Revision: 658430 $ $Date: 2008-05-20 14:04:27 -0700 (Tue, 20 May 2008) $
 * 
 */
public class UsernamePasswordCredentials implements Credentials {

    private final BasicUserPrincipal principal;
    private final String password;
     
    /**
     * The constructor with the username and password combined string argument.
     *
     * @param usernamePassword the username:password formed string
     * @see #toString
     */
    public UsernamePasswordCredentials(String usernamePassword) {
        super();
        if (usernamePassword == null) {
            throw new IllegalArgumentException("Username:password string may not be null");            
        }
        int atColon = usernamePassword.indexOf(':');
        if (atColon >= 0) {
            this.principal = new BasicUserPrincipal(usernamePassword.substring(0, atColon));
            this.password = usernamePassword.substring(atColon + 1);
        } else {
            this.principal = new BasicUserPrincipal(usernamePassword);
            this.password = null;
        }
    }


    /**
     * The constructor with the username and password arguments.
     *
     * @param userName the user name
     * @param password the password
     */
    public UsernamePasswordCredentials(String userName, String password) {
        super();
        if (userName == null) {
            throw new IllegalArgumentException("Username may not be null");            
        }
        this.principal = new BasicUserPrincipal(userName);
        this.password = password;
    }

    public Principal getUserPrincipal() {
        return this.principal;
    }

    public String getUserName() {
        return this.principal.getName();
    }

    public String getPassword() {
        return password;
    }

    @Override
    public int hashCode() {
        return this.principal.hashCode();
    }

    @Override
    public boolean equals(Object o) {
        if (o == null) return false;
        if (this == o) return true;
        if (o instanceof UsernamePasswordCredentials) {
            UsernamePasswordCredentials that = (UsernamePasswordCredentials) o;
            if (LangUtils.equals(this.principal, that.principal)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public String toString() {
        return this.principal.toString();
    }

}