<?php

//copyright Lawrence Truett and FluffyCat.com 2005, all rights reserved

  include_once('BookSingleton.php');

  Class BookBorrower {

    private $borrowedBook;
    private $haveBook = FALSE;

    function __construct() {
    }

    function getAuthorAndTitle() {
      if (TRUE == $this->haveBook) {
        return $this->borrowedBook->getAuthorAndTitle();
      } else {
        return "I don't have the book";
      }
    }

    function borrowBook() {
      $this->borrowedBook = BookSingleton::borrowBook();
      if ($this->borrowedBook == NULL) {
        $this->haveBook = FALSE;
      } else {
        $this->haveBook = TRUE;
      }
    }

    function returnBook() {
      $this->borrowedBook->returnBook($this->borrowedBook);
    }

  }

?>