/**
* wpsc product has stock function
* @return boolean - true if the product has stock or does not use stock, false if it does not
*/
function wpsc_product_has_stock($id = null)
{
// maybe do wpsc_clear_stock_claims first?
if (is_numeric($id) && $id > 0) {
$id = absint($id);
} else {
$id = get_the_ID();
}
$stock = get_post_meta($id, '_wpsc_stock', true);
if ($stock === '') {
return true;
}
$variations = get_children(array("post_type" => "wpsc-product", "post_parent" => $id));
$filter_name = empty($variations) ? 'wpsc_product_stock' : 'wpsc_product_variation_stock';
$stock = apply_filters($filter_name, (int) $stock, $id);
if (!empty($variations)) {
foreach ($variations as $variation) {
if (wpsc_product_has_stock($variation->ID)) {
return true;
}
}
} elseif ($stock > 0) {
$claimed_query = new WPSC_Claimed_Stock(array('product_id' => $id));
$claimed_stock = $claimed_query->get_claimed_stock_count();
if ($stock - $claimed_stock > 0) {
return true;
}
}
return false;
}
/**
* Get remaining product quantity
*
* @since
* @access public
*
* @param int $product_id Cart product ID.
* @param array $variations Cart item parameters.
* @param int $quantity Cart object.
*
* @uses wpsc_product_stock Filters and restricts the product cart quantity.
*/
function wpsc_get_remaining_quantity($product_id, $variations = array(), $quantity = 1)
{
$stock = get_post_meta($product_id, '_wpsc_stock', true);
$stock = apply_filters('wpsc_product_stock', $stock, $product_id);
$output = 0;
// check to see if the product uses stock
if (is_numeric($stock)) {
if ($stock > 0) {
$claimed_query = new WPSC_Claimed_Stock(array('product_id' => $product_id));
$claimed_stock = $claimed_query->get_claimed_stock_count();
$output = $stock - $claimed_stock;
}
}
return $output;
}
