/**
* Returns aggregate discount amount applicable to order.
*
* @param array $order Order data array
* @param bool $apply Whether discount-related information must be added to order parameters (where appropriate)
* @return float Total discount value expressed in order currency
*/
public static function calculate(&$order, $apply = false)
{
$currency = isset($order['currency']) ? $order['currency'] : wa('shop')->getConfig()->getCurrency(false);
$applicable_discounts = array();
$contact = self::getContact($order);
// Discount by contact category applicable?
if (self::isEnabled('category')) {
$applicable_discounts[] = self::byCategory($order, $contact, $apply);
}
// Discount by coupon applicable?
if (self::isEnabled('coupons')) {
$applicable_discounts[] = self::byCoupons($order, $contact, $apply);
}
// Discount by order total applicable?
if (self::isEnabled('order_total')) {
$crm = new shopCurrencyModel();
$dbsm = new shopDiscountBySumModel();
// Order total in default currency
$order_total = (double) $crm->convert($order['total'], $currency, wa('shop')->getConfig()->getCurrency());
$applicable_discounts[] = max(0.0, min(100.0, (double) $dbsm->getDiscount('order_total', $order_total))) * $order['total'] / 100.0;
}
// Discount by customer total spent applicable?
if (self::isEnabled('customer_total')) {
$applicable_discounts[] = self::byCustomerTotal($order, $contact, $apply);
}
/**
* @event order_calculate_discount
* @param array $params
* @param array[string] $params['order'] order info array('total' => '', 'items' => array(...))
* @param array[string] $params['contact'] contact info
* @param array[string] $params['apply'] calculate or apply discount
* @return float discount
*/
$event_params = array('order' => &$order, 'contact' => $contact, 'apply' => $apply);
$plugins_discounts = wa('shop')->event('order_calculate_discount', $event_params);
foreach ($plugins_discounts as $plugin_discount) {
$applicable_discounts[] = $plugin_discount;
}
// Select max discount or sum depending on global setting.
$discount = 0.0;
if ($applicable_discounts = array_filter($applicable_discounts, 'is_numeric')) {
if (wa('shop')->getSetting('discounts_combine') == 'sum') {
$discount = (double) array_sum($applicable_discounts);
} else {
$discount = (double) max($applicable_discounts);
}
}
// Discount based on affiliate bonus?
if (shopAffiliate::isEnabled()) {
$discount = $discount + (double) shopAffiliate::discount($order, $contact, $apply, $discount);
}
return min(max(0, $discount), ifset($order['total'], 0));
}
