package projekt1;
import java.util.*;

public class AccessControl2 {
	public static Scanner scan = new Scanner(System.in);
	public static String username = "";
	public static String password = "";
	public static void main(String[] args) {
		username();
		passwordChange();
		while(true) {
			System.out.println("You now have the following choices :\r\n" +
					"1 - Change Password\r\n" +
					"2 - Log off\r\n" +
					"3 - Shut down");
			System.out.print("Please select :");
			int choice = scan.nextInt();
			if (choice == 1) {
				passwordChange();
			}
			if (choice == 2) {
				System.out.println("*** User" + username + "is logged off");
				while(true) {
					System.out.print("To logon enter username :");
					String musername = scan.nextLine();
					if (username.equals(musername)) {
						break;
					}
				}
				int t = 3;
				while (t >= 0) {
					t--;
					System.out.println("To logon enter password :");
					String mpassword = scan.nextLine();
					if (password.equals(mpassword)) {
						System.out.println("*** User Otto is Logged on .");
						break;
					}
					if (t == 0 ) {
						System.exit(0);
					}
				}
			}

			if (choice == 3) {
				System.out.println("*** User" + username + " is logged off");
				System.out.println("*** System shutting down .");
				System.exit(0);
			}
		}
	}
	public static String username() {
		while(true) {
			System.out.print("Please enter a non - empty username :");
			String username = scan.next();
			if (Character.isUpperCase(username.charAt(0)) && !username.contains(" ")) {
				return username;
			}
		}
	}
	// Change/Create password
	public static String passwordChange() {
		while(true) {

			String password = scan.nextLine();
			if (john.checkPWD(password)) {
				System.out.print("Please repeat the password :");
				String onePassword = scan.nextLine();
				if (john.checkPWD(onePassword) == true && onePassword.equals(password)) {
						return password;
				}
			}
			System.out.print("Please enter a password    :");
		}
	}
}