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<?php
// ===========================================================================================
//
// session.php
//
// Description: My testprogram for sessions.
// Used to show off that it works as expected.
//
//
// Author: Mikael Roos
//


// -------------------------------------------------------------------------------------------
//
// Error handling on/off
//
error_reporting(E_ALL | E_STRICT);
$debug = "";
$debugEnable = TRUE;  // TRUE to enable debugging, FALSE to not print out debug information


// -------------------------------------------------------------------------------------------
//
// Prepare the page content
//
$html = "";

// Include class definitions
require_once('CCardHand.php');
require_once('CDeck.php');

// Load class definitions before calling session_start
session_start();


// -------------------------------------------------------------------------------------------
//
// Take care of GET variables
//
$doSession    = (empty($_GET['session']) ? FALSE : $_GET['session']);

switch($doSession) {
    case 'init': { // Destroy and then initiate the session
        require('ISessionDestroy.php');
        //
        // Initiating a session and storing an object in the session variable
        //
        // http://php.net/manual/en/function.session-start.php
        // http://php.net/manual/en/function.session-regenerate-id.php
        //
        session_start();          // Must call again if we destroyed just destroyed
                                     // the session.
        session_regenerate_id();  // To avoid problems

        $_SESSION['hand']   = new CCardHand();
        $_SESSION['deck']   = new CDeck();
        $_SESSION['rounds'] = 0;

        $debug .= 'Session destroyed and created.';
        $debug .= 'Current session id is: ' . session_id() . '<br />';
    }
    break;

    case 'destroy': { // Only destroy the session
        require('ISessionDestroy.php');
        $debug .= 'Session destroyed.';
        $debug .= 'Current session id is: ' . session_id() . '<br />';
    }
    break;
    
    default: 
    break;
}


// -------------------------------------------------------------------------------------------
//
// Using the session variable
//
// http://php.net/manual/en/function.isset.php
//
if(isset($_SESSION['deck'])) {
    $card = $_SESSION['deck']->DealFromTop();
    $card->FlipCard();
    $_SESSION['hand']->AddCard($card);
    $_SESSION['rounds'] += 1;

    $html .= "<h1>Leker med sessioner</h1>";
    $html .= $_SESSION['hand']->GetCardsAsBox();
    $html .= <<<EOD
<p>
Antalet rundor äro {$_SESSION['rounds']}.
<a href='session.php'>Ny runda</a>
</p>
EOD;
}

$html .= <<<EOD
<p>
<a href='session.php?session=init'>Initiera ny session (och förstör den befintliga)</a><br/>
<a href='session.php?session=destroy'>Förstör sessionen</a>
</p>
EOD;

$debug .= 'Current session id is: ' . session_id() . '<br />';


// -------------------------------------------------------------------------------------------
//
// Create and print out the html-page
//
require_once('common.php');
$title         = "Testa sessioner";
$charset     = "iso-8859-1";
$language    = "sv";
$debug = $debugEnable ? $debug : "";

$html = <<< EOD
<?xml version="1.0" encoding="{$charset}" ?> 
<!DOCTYPE html 
     PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="{$language}" lang="{$language}">  
    <head>
        <meta http-equiv="Content-Type" content="text/html; {$charset};" />
        <title>{$title}</title>
    </head>
    <body>
        {$header}
        {$html}
        {$footer}
        {$debug}
    </body>
</html>
EOD;

header("Content-Type: application/xhtml+xml; charset={$charset}");
echo $html;
exit;

?>