/**
* Calculate order discount for sub orders (used in MVE)
*
* @param string $type discount type
* @param array $bonus Array with promotion data
* @param int $bonus_id Bonus ID
* @param array $cart Array with cart data
* @return float calculated discount value
*/
function fn_promotions_calculate_order_discount($bonus, $bonus_id, $cart)
{
$type = $bonus['discount_bonus'];
$price = $cart['subtotal'];
$value = $bonus['discount_value'];
static $parent_orders = array();
// this calculations are actual only for the fixed (absolute) amount
if ($type == 'to_fixed' || $type == 'by_fixed') {
// if it is parent or usual order
if (empty($cart['parent_order_id'])) {
// calculate usual discount
$discount = fn_promotions_calculate_discount($type, $price, $value);
// save order discount for future calculations of suborders
$discount = fn_format_price($discount);
$session_orders_discount =& $_SESSION['orders_discount'][$bonus['promotion_id'] . '_' . $bonus_id];
$session_orders_discount['parent_order_discount'] = $discount;
$session_orders_discount['suborders_discount'] = 0;
} else {
// this is sub order
$parent_order_id = $cart['parent_order_id'];
// get parent order subtotal info
if (!isset($parent_orders[$parent_order_id]['subtotal'])) {
$parent_order_info = fn_get_order_info($parent_order_id);
$parent_orders[$parent_order_id]['subtotal'] = $parent_order_info['subtotal'];
}
if (!empty($parent_orders[$parent_order_id]['subtotal'])) {
// calculate the share of the full discount
$value = $value * $price / $parent_orders[$parent_order_id]['subtotal'];
}
$discount = fn_promotions_calculate_discount($type, $price, $value);
$discount = fn_format_price($discount);
$session_orders_discount =& $_SESSION['orders_discount'][$bonus['promotion_id'] . '_' . $bonus_id];
$parent_order_discount = !empty($session_orders_discount['parent_order_discount']) ? $session_orders_discount['parent_order_discount'] : 0;
$suborders_discount = !empty($session_orders_discount['suborders_discount']) ? $session_orders_discount['suborders_discount'] : 0;
// check that total suborders discount is less than parent_order_discount
// or this is last sub order, so we have to distract discount, to avoid the extra cents
$new_suborders_discount = $suborders_discount + $discount;
if ($new_suborders_discount > $parent_order_discount || !empty($cart['companies']) && end($cart['companies']) == $cart['company_id']) {
$discount = $parent_order_discount - (!empty($session_orders_discount['suborders_discount']) ? $session_orders_discount['suborders_discount'] : 0);
if ($discount < 0) {
$discount = 0;
}
}
$session_orders_discount['suborders_discount'] = $suborders_discount + $discount;
}
} else {
$discount = fn_promotions_calculate_discount($type, $price, $value);
}
return $discount;
}
/**
* Apply promotion cart rule
*
* @param array $promotion promotion array
* @param array $cart cart array
* @param array $auth (optional) - auth array
* @param array $cart_products (optional) - cart products array (for cart rules)
* @return bool true if rule can be applied, false - otherwise
*/
function fn_promotion_apply_cart_rule($bonus, &$cart, &$auth, &$cart_products)
{
// Clean bonuses
$cart['promotions'][$bonus['promotion_id']]['bonuses'][$bonus['bonus']] = $bonus;
if ($bonus['bonus'] == 'order_discount') {
if (floatval($cart['subtotal'])) {
if (!isset($cart['subtotal_discount'])) {
$cart['subtotal_discount'] = 0;
}
$discount = fn_promotions_calculate_discount($bonus['discount_bonus'], $cart['subtotal'], $bonus['discount_value']);
if (floatval($discount)) {
$cart['use_discount'] = true;
$cart['subtotal_discount'] += fn_format_price($discount);
}
}
} elseif ($bonus['bonus'] == 'discount_on_products') {
foreach ($cart_products as $k => $v) {
if (isset($v['exclude_from_calculate']) || !floatval($v['base_price']) && $v['base_price'] != 0) {
continue;
}
if (fn_promotion_validate_attribute($v['product_id'], $bonus['value'], 'in')) {
if (fn_promotion_apply_discount($bonus['promotion_id'], $bonus, $cart_products[$k])) {
$cart['use_discount'] = true;
}
}
}
} elseif ($bonus['bonus'] == 'discount_on_categories') {
foreach ($cart_products as $k => $v) {
if (isset($v['exclude_from_calculate']) || !floatval($v['base_price']) && $v['base_price'] != 0) {
continue;
}
$c_ids = array_keys($v['category_ids']);
if (fn_promotion_validate_attribute($c_ids, $bonus['value'], 'in')) {
if (fn_promotion_apply_discount($bonus['promotion_id'], $bonus, $cart_products[$k])) {
$cart['use_discount'] = true;
}
}
}
} elseif ($bonus['bonus'] == 'give_usergroup') {
$cart['promotions'][$bonus['promotion_id']]['bonuses'][$bonus['bonus']]['pending'] = true;
} elseif ($bonus['bonus'] == 'give_coupon') {
$cart['promotions'][$bonus['promotion_id']]['bonuses'][$bonus['bonus']]['pending'] = true;
$cart['promotions'][$bonus['promotion_id']]['bonuses'][$bonus['bonus']]['coupon_code'] = fn_generate_code('', COUPON_CODE_LENGTH);
} elseif ($bonus['bonus'] == 'free_shipping') {
$cart['free_shipping'][] = $bonus['value'];
} elseif ($bonus['bonus'] == 'free_products') {
foreach ($bonus['value'] as $p_data) {
$product_data = array($p_data['product_id'] => array('amount' => $p_data['amount'], 'product_id' => $p_data['product_id'], 'extra' => array('exclude_from_calculate' => true, 'aoc' => empty($p_data['product_options']), 'saved_options_key' => $bonus['promotion_id'] . '_' . $p_data['product_id'])));
if (!empty($cart['saved_product_options'][$bonus['promotion_id'] . '_' . $p_data['product_id']])) {
$product_data[$p_data['product_id']]['product_options'] = $cart['saved_product_options'][$bonus['promotion_id'] . '_' . $p_data['product_id']];
} elseif (!empty($p_data['product_options'])) {
$product_data[$p_data['product_id']]['product_options'] = $p_data['product_options'];
}
$existing_products = array_keys($cart['products']);
if ($ids = fn_add_product_to_cart($product_data, $cart, $auth)) {
$new_products = array_diff(array_keys($cart['products']), $existing_products);
if (!empty($new_products)) {
$hash = array_pop($new_products);
} else {
$hash = key($ids);
}
$_cproduct = fn_get_cart_product_data($hash, $cart['products'][$hash], true, $cart, $auth, !empty($new_products) ? 0 : $p_data['amount']);
if (!empty($_cproduct)) {
$cart_products[$hash] = $_cproduct;
}
}
}
}
return true;
}
