<?php
// Start session management with a persistent cookie
$lifetime = 60 * 60 * 24 * 14;    // 2 weeks in seconds
// $lifetime = 0;                      // per-session cookie
session_set_cookie_params($lifetime, '/');
session_start();

// Create a cart array if needed
if (empty($_SESSION['cart12'])) $_SESSION['cart12'] = array();

// Create a table of products
$products = array();
$products['D2400'] = array('name' => 'Dimension 2400', 'cost' => '149.50');
$products['AG3'] = array('name' => 'Macintosh G3', 'cost' => '199.50');
$products['DE510'] = array('name' => 'Dimension E510', 'cost' => '299.50');

// Include cart functions
require_once('config/cart.php');

// Get the action to perform
if (isset($_POST['action'])) {
    $action = $_POST['action'];
} else if (isset($_GET['action'])) {
    $action = $_GET['action'];
} else {
	$action = 'show_add_item';
}

// Add or update cart as needed
	switch($action) {
		case 'add':
			add_item($_POST['productkey'], $_POST['itemqty']);			
			include("cart-view.php");
			break;
		case 'update':
			$new_qty_list = $_POST['newqty'];
			foreach($new_qty_list as $key => $qty) {
				if ($_SESSION['cart12'][$key]['qty'] != $qty) {
					update_item($key, $qty);
				}
			}			
			include('cart-view.php');
			break;
		case 'show_cart':		
			include('cart-view.php');
			break;
		case 'show_add_item':	
			include('store.php');
			break;
		case 'empty_cart':
			unset($_SESSION['cart12']);
			include('cart-view.php');
			break;
	}