Get active discount rules

Retrieve active discount rules.

if (!function_exists('advanced_woo_discount_rules_is_active_rule')) {
    function advanced_woo_discount_rules_is_active_rule($rule_id)
    {
        if (class_exists('Wdr\App\Controllers\ManageDiscount') && !empty(\Wdr\App\Controllers\ManageDiscount::$available_rules)) {
            $rule_ids = array_keys(\Wdr\App\Controllers\ManageDiscount::$available_rules);
            return in_array($rule_id, $rule_ids);
        } else {
            return false;
        }
    }
}

Example
// advanced_woo_discount_rules_is_active_rule(8);