<?php
include_once('User.php');

if(isset($_POST['submit']) OR isset($_POST['next']) OR isset($_POST['previous'])){
    $username = $_POST["user"];
    $password = $_POST["pass"];

    $object = new User();
    $object->username= $username;
    $object->Password=$password;
    if( $object->isAuthenticated() ){

      echo "User Verified . <br><br>";

      $start = 0;

      if(isset($_POST['next'])) {
          if(isset($_POST['start'])){
             $start = $_POST['start'];
          }
      }
      else if(isset($_POST['previous'])) {
        $start = $_POST['start'] - 2;
        if($start < 0) {
            $start = 0;
        }
      }

      $object->getBooks($start);

    }
}
else{
  echo "Wrong User Name Or Password . <br>";
}


?>