/**
 * This file is part of the CRISTAL-iSE kernel.
 * Copyright (c) 2001-2014 The CRISTAL Consortium. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * http://www.fsf.org/licensing/licenses/lgpl.html
 */
package com.c2kernel.process.auth;

import java.util.Properties;
import java.util.Scanner;

import com.c2kernel.entity.proxy.AgentProxy;
import com.c2kernel.process.Gateway;

public class ConsoleAuth implements ProxyLogin {

	public ConsoleAuth() {
	}

	@Override
	public void initialize(Properties props) throws Exception {
		
	}
	@Override
	public AgentProxy authenticate(String resource) throws Exception {
		AgentProxy user = null;
		if (resource!=null) System.out.println("Please log in"+(resource.length()>0?"to "+resource:""));
		Scanner scan = new Scanner(System.in);
		int loginAttempts = 0;
		while (user == null && loginAttempts++ < 3) {
			System.out.print("User:");
			String username = scan.nextLine();
			System.out.print("Password:");
			String pass = scan.nextLine();
			try {
				user = Gateway.connect(username, pass, resource);
			} catch (Exception ex) {
				System.err.println(ex.getMessage());
			}
		}
		
		if (user == null) {
			System.err.println("Bye");
			System.exit(0);
		}
		return user;
			
	}

}