class MOrders extends Model{
 function  __construct(){
    parent::Model();
 }

function updateCart($productid,$fullproduct){
	//pull in existing cart first!
	$cart = isset($_SESSION['cart']) ? $_SESSION['cart'] : array();
	// $cart = $_SESSION['cart'];//$this->session->userdata('cart');
	$productid = id_clean($productid);
	$totalprice = 0;
	if (count($fullproduct)){
		if (isset($cart[$productid])){
			$prevct = $cart[$productid]['count'];
			$prevname = $cart[$productid]['name'];
			$prevprice = $cart[$productid]['price'];
			$cart[$productid] = array(
					'name' => $prevname,
					'price' => $prevprice,
					'count' => $prevct + 1
					);
		}else{
			$cart[$productid] = array(
					'name' => $fullproduct['name'],
					'price' => $this->format_currency($fullproduct['price']),
					'count' => 1
					);			
		}
	
		foreach ($cart as $id => $product){
			$totalprice += $product['price'] * $product['count'];
		}		
		
		$_SESSION['totalprice'] = $this->format_currency($totalprice);
		//$this->session->set_userdata('totalprice', $totalprice);
		$_SESSION['cart'] = $cart;
		//$this->session->set_userdata('cart',true);
		$this->session->set_flashdata('conf_msg', "We've added this product to your cart."); 
	}

}

function removeLineItem($id){
	$id = id_clean($id);
	$totalprice = 0;
	$cart = $_SESSION['cart'];//$this->session->userdata('cart');
	if (isset($cart[$id])){
		unset($cart[$id]);
		foreach ($cart as $id => $product){
			$totalprice += $product['price'] * $product['count'];
		}		
		$_SESSION['totalprice'] = $this->format_currency($totalprice);
		$_SESSION['cart'] = $cart;
		//$this->session->set_userdata('totalprice', $totalprice);
		//$this->session->set_userdata('cart',true);
		echo "Product removed.";
	}else{
		echo "Product not in cart!";
	}
}

function updateCartAjax($idlist){
	$cart = $_SESSION['cart'];//$this->session->userdata('cart');
	//split idlist on comma first
	$records = explode(',',$idlist);
	$updated = 0;
	$totalprice = $_SESSION['totalprice'];
	//$this->session->userdata('totalprice');
	if (count($records)){
		foreach ($records as $record){
			if (strlen($record)){
				//split each record on colon
				$fields = explode(":",$record);
				$id = id_clean($fields[0]);
				$ct = $fields[1];
				
				if ($ct > 0 && $ct != $cart[$id]['count']){
					$cart[$id]['count'] = $ct;
					$updated++;
				}elseif ($ct == 0){
					unset($cart[$id]);
					$updated++;
				}
			
			}
			
		}
		
		
		if ($updated){
			$totalprice=0;
			foreach ($cart as $id => $product){
				$totalprice += $product['price'] * $product['count'];
			}		

			$_SESSION['totalprice'] = $this->format_currency($totalprice);
			$_SESSION['cart'] = $cart;
			//$this->session->set_userdata('totalprice', $totalprice);		
			//$this->session->set_userdata('cart',true);
			
		
			switch ($updated){
				case 0:
				$string = "No records";
				break;
				
				case 1:
				$string = "$updated record";
				break;
				
				default:
				$string = "$updated records";
				break;
			}
			echo "$string updated";
			//$this->session->set_flashdata('update_count', $string ." updated");
		}else{
			echo "No changes detected";
			//$this->session->set_flashdata('update_count', "No changes detected");
		}
	}else{
		echo "Nothing to update";
		//$this->session->set_flashdata('update_count', "Nothing to update");
	}
}