/**
* verify_tickets_in_cart
* compares the current tickets in the cart with the current registrations for the checkout's transaction.
* if any difference between the type of ticket or their associated quantities exist,
* then registrations will be added or removed accordingly.
*
* @access public
* @param \EE_Checkout $checkout
* @return \EE_Checkout
*/
public static function verify_tickets_in_cart(EE_Checkout $checkout)
{
// verify transaction
if ($checkout->transaction instanceof EE_Transaction) {
$changes = false;
EED_Multi_Event_Registration::load_classes();
// first we need to get an accurate list of tickets in the cart
$cart_tickets = EED_Multi_Event_Registration::get_tickets_in_cart($checkout);
// then we need to get an accurate list of registration tickets
$registrations = $checkout->transaction->registrations();
$reg_tickets = EED_Multi_Event_Registration::get_registration_tickets($registrations);
// now delete registrations for any tickets that were completely removed
foreach ($reg_tickets as $reg_ticket_id => $reg_ticket_registrations) {
if (!isset($cart_tickets[$reg_ticket_id])) {
foreach ($reg_ticket_registrations as $reg_ticket_registration) {
$changes = EED_Multi_Event_Registration::remove_registration($checkout->transaction, $reg_ticket_registration) ? true : $changes;
}
}
}
// then add new tickets and/or adjust quantities for others
foreach ($cart_tickets as $TKT_ID => $ticket_line_items) {
$changes = EED_Multi_Event_Registration::adjust_registration_quantities($checkout->transaction, $TKT_ID, $ticket_line_items, $reg_tickets) ? true : $changes;
}
if ($changes) {
$new_ticket_count = count($checkout->transaction->registrations());
EED_Multi_Event_Registration::reset_registration_details($checkout->transaction, $new_ticket_count);
EED_Multi_Event_Registration::update_cart($checkout);
EED_Multi_Event_Registration::update_checkout_and_transaction($checkout, $new_ticket_count);
add_filter('FHEE__Single_Page_Checkout__load_reg_steps__reload_reg_steps', '__return_true');
}
}
return $checkout;
}
