/**
* Checks required products on recalculation
*
* @param array $cart Array of the cart contents and user information necessary for purchase
* @param array $cart_products Cart products
* @param array $auth Array of user authentication data (e.g. uid, usergroup_ids, etc.)
* @return bool Always true
*/
function fn_check_calculated_required_products(&$cart, &$cart_products, $auth)
{
if (!empty($cart['products'])) {
foreach ($cart['products'] as $key => $entry) {
if (!empty($entry['product_id'])) {
$ids = fn_get_required_products_ids($entry['product_id']);
if (!empty($ids)) {
$have = fn_required_products_get_existent($auth, $ids, $cart);
if (empty($have) || count($have) != count($ids)) {
if (empty($entry['extra']['parent'])) {
$cart['amount'] -= $entry['amount'];
}
unset($cart['products'][$key]);
unset($cart_products[$key]);
if (isset($cart['product_groups'])) {
foreach ($cart['product_groups'] as $key_group => $group) {
if (in_array($key, array_keys($group['products']))) {
unset($cart['product_groups'][$key_group]['products'][$key]);
}
}
}
fn_check_calculated_required_products($cart, $cart_products, $auth);
}
}
}
}
}
return true;
}
/**
* Checks product list and adds required products
*
* @param array $product_data Products data
* @param mixed $auth Array with authorization data
* @param array $cart
* @param array $added_products Products that are checked for further products that need to be added
* @return bool False if some products were removed, otherwise - true
*/
function fn_check_added_required_products(&$product_data, $auth, &$cart, $added_products = array())
{
$result = true;
foreach ($product_data as $key => $entry) {
if (!empty($entry['amount']) && !empty($key)) {
$product_id = !empty($entry['product_id']) ? $entry['product_id'] : $key;
$added_products[$product_id] = $entry;
$ids = fn_get_required_products_ids($product_id);
if (!empty($ids)) {
$have = fn_required_products_get_existent($auth, $ids);
if (empty($have) || count($have) != count($ids)) {
$products_to_cart = array_diff($ids, $have);
$out_of_stock = array();
$check_products = array();
foreach ($products_to_cart as $id) {
if (!empty($added_products[$id])) {
continue;
}
$amount = fn_check_amount_in_stock($id, 1, fn_get_default_product_options($id), 0, 'N', 0, $cart);
if (!$amount) {
$out_of_stock[] = $id;
} else {
$check_products[$id] = array('product_id' => $id, 'amount' => $amount);
}
}
if (empty($out_of_stock) && fn_check_added_required_products($check_products, $auth, $cart, $added_products)) {
$cart['change_cart_products'] = true;
$msg = __('required_products_added');
foreach ($check_products as $id => $v) {
if (empty($added_products[$id])) {
$added_products[$id] = $v;
$product_data[$id] = $v;
$msg .= "<br />" . fn_get_product_name($id);
$cart['amount'] = !isset($cart['amount']) ? $v['amount'] : $cart['amount'] + $v['amount'];
}
}
} else {
unset($product_data[$key]);
unset($added_products[$product_id]);
$result = false;
$msg = __('required_products_out_of_stock');
foreach ($out_of_stock as $id) {
$msg .= "<br />" . fn_get_product_name($id);
}
}
//fn_set_notification('N', __('notice'), $msg);
}
}
}
}
return $result;
}
