/**
* Applies surcharge of selected payment to cart total
*
* @param array $cart Array of the cart contents and user information necessary for purchase
* @param array $auth Array of user authentication data (e.g. uid, usergroup_ids, etc.)
* @param string $lang_code 2-letter language code (e.g. 'en', 'ru', etc.)
* @return bool Always true
*/
function fn_update_payment_surcharge(&$cart, $auth, $lang_code = CART_LANGUAGE)
{
$cart['payment_surcharge'] = 0;
if (!empty($cart['payment_id'])) {
$_data = db_get_row("SELECT a_surcharge, p_surcharge FROM ?:payments WHERE payment_id = ?i", $cart['payment_id']);
if (!empty($_data)) {
if (floatval($_data['a_surcharge'])) {
$cart['payment_surcharge'] += $_data['a_surcharge'];
}
if (floatval($_data['p_surcharge'])) {
$cart['payment_surcharge'] += fn_format_price($cart['total'] * $_data['p_surcharge'] / 100);
}
}
}
if (!empty($cart['payment_surcharge'])) {
$cart['payment_surcharge_title'] = db_get_field("SELECT surcharge_title FROM ?:payment_descriptions WHERE payment_id = ?i AND lang_code = ?s", $cart['payment_id'], $lang_code);
// apply tax
fn_calculate_payment_taxes($cart, $auth);
}
return true;
}
/**
* Applies surcharge of selected payment to cart total
*
* @param array $cart Array of the cart contents and user information necessary for purchase
* @param array $auth Array of user authentication data (e.g. uid, usergroup_ids, etc.)
* @param string $lang_code 2-letter language code (e.g. 'en', 'ru', etc.)
* @return bool Always true
*/
function fn_update_payment_surcharge(&$cart, $auth, $lang_code = CART_LANGUAGE)
{
$cart['payment_surcharge'] = 0;
// Calculate cart payment surcharge based on cart total
if (!empty($cart['payment_id'])) {
$surcharges = db_get_row("SELECT a_surcharge AS `absolute`, p_surcharge AS `percentage` FROM ?:payments WHERE payment_id = ?i", $cart['payment_id']);
if (!empty($surcharges)) {
if (floatval($surcharges['absolute'])) {
$cart['payment_surcharge'] += $surcharges['absolute'];
}
if (floatval($surcharges['percentage'])) {
$cart['payment_surcharge'] += fn_format_price($cart['total'] * $surcharges['percentage'] / 100);
}
}
}
if (!empty($cart['payment_surcharge'])) {
// Apply surcharge title
$cart['payment_surcharge_title'] = db_get_field("SELECT surcharge_title FROM ?:payment_descriptions WHERE payment_id = ?i AND lang_code = ?s", $cart['payment_id'], $lang_code);
// Apply tax
fn_calculate_payment_taxes($cart, $auth);
}
return true;
}