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 Authenticator {

	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:""));
		@SuppressWarnings("resource") // closing the scanner closes system.in
		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);
			} catch (Exception ex) {
				System.err.println(ex.getMessage());
			}
		}
		
		if (user == null) {
			System.err.println("Bye");
			System.exit(0);
		}
		return user;
			
	}

}