<?php

        class login
        {

                private function initQuery($user)
                {

                        $query = "SELECT userName, passWord, created FROM users WHERE userName = '$user'";
                        $result = mysql_query($query);
                        $check = mysql_num_rows($result);

                        if($check == 1)
                        {

                                $row = mysql_fetch_assoc($result);
                                return $row;

                        } else {

                                $_SESSION['login']['error']['user'] = "Invalid username or password";
                                return false;
                                exit;

                        }

                }

                public function loginForm()
                {
                        $form = "<table class="loginForm">\n";
                                .= "<form method=\"post\">\n";
                                .= "<tr><td><input type=\"text\" name=\"userName\" placeholder=\"Username\" /></td></tr>\n";
                                .= "<tr><td><input type=\"password\" name=\"passWord\" placeholder=\"Password\" /></td></tr>\n";
                                .= "</form>\n";
                                .= "</table>\n";
                        print $form;
                }

                public function validateUser($user, $minLen, $maxLen)
                {

                        $check = $this->initQuery($user);

                        if((strlen($user) <= $minLen) || (strlen($user) >= $maxLen))
                        {

                                $_SESSION['login']['error']['user'] = "Your username needs to be between $minLen and $maxLen";
                                exit;

                        } elseif($check == false) {

                                $_SESSION['login']['error']['user'] = "Invalid username or password";
                                exit;

                        } else {

                                if(isset($_SESSION['login']['error']['user']))
                                {
                                        unset($_SESSION['login']['error']['user']);
                                }

                                $_SESSION['store']['user'] = $user;

                        }

                }
                public function validatePass($user, $pass, $minLen, $maxLen)
                {

                        $check = $this->initQuery($user);

                        if((strlen($pass) <= $minLen) || (strlen($pass) >= $maxLen)
                        {

                                $_SESSION['login']['error']['pass'] = "Your password needs to be between $minLen and $maxLen";
                                exit;

                        } elseif ($check == false) {

                                $_SESSION['login']['error']['pass'] = "Invalid username or password";

                        } else {

                                if(isset($_SESSION['login']['error']['pass']))
                                {
                                        unset($_SESSION['login']['error']['pass']);
                                }

                        }

                }

                private function saltPass($user, $pass)
                {

                        $check = $this->initQuery($user);

                            $password = $pass;
                            $salt = sha1(md5($check['created']));
                            $password = md5($password.$salt);

                }

        }

?>