package com.oreilly.jent.jsf.library.logic;

/**
 * In general, you may use the code in this book in your programs and 
 * documentation. You do not need to contact us for permission unless 
 * you're reproducing a significant portion of the code. For example, 
 * writing a program that uses several chunks of code from this book does 
 * not require permission. Selling or distributing a CD-ROM of examples 
 * from O'Reilly books does require permission. Answering a question by 
 * citing this book and quoting example code does not require permission. 
 * Incorporating a significant amount of example code from this book into 
 * your product's documentation does require permission.
 * 
 * We appreciate, but do not require, attribution. An attribution usually 
 * includes the title, author, publisher, and ISBN. For example: 
 * 
 *   "Java Enterprise in a Nutshell, Third Edition, 
 *    by Jim Farley and William Crawford 
 *    with Prakash Malani, John G. Norman, and Justin Gehtland. 
 *    Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
 *  
 *  If you feel your use of code examples falls outside fair use or the 
 *  permission given above, feel free to contact us at 
 *  permissions@oreilly.com.
 */

import java.util.Hashtable;

import com.oreilly.jent.jsf.library.model.User;

public class UserManager {

    private static User guestUser;
    private static Hashtable users = new Hashtable();

    static {
        guestUser = new User("Guest");
        guestUser.setFullName("Guest");

        User librarian = new User("librarian");
        librarian.setLibrarian(true);
        librarian.setPassword("librarian");
        librarian.setFullName("John Librarian");
        users.put("librarian", librarian);

        User borrower = new User("Borrower");
        borrower.setBorrower(true);
        borrower.setPassword("borrower");
        borrower.setFullName("Jane Borrower");
        users.put("borrower", borrower);
    }

    public static User getGuestUser() {
        return guestUser;
    }

    public static boolean confirmLogin(String username, String password) {
        if ((username == null) || (password == null))
            return false;

        User theUser = (User)users.get(username);
        if (theUser == null)
            return false;
        return password.equals(theUser.getPassword());
    }

    public static User getUser(String username) {
        return (User)users.get(username);
    }
}