I have a question abt woocommerce add to cart validation. Basically what I want the code to do is to check if there is more than one item for product category (ID: 56) when product category (ID: 55) exists. And only crosscheck against 2 role: “non logged in users”, “Customers”.

For you information, i didn’t write this code, i used Chatgpt to get the code, because I don’t know how to code

Your help is very much appreciated, thanks

The code is in the following:

function custom_add_to_cart_validation($passed, $product_id, $quantity) {
    // Get the current user's role
    $current_user_role = wp_get_current_user()->roles[0];

    // Check if the user is not logged in or has the role "Customers"
    if (!is_user_logged_in() || $current_user_role == 'Customers') {
    // Get the product categories
    $product_categories = get_the_terms( $product_id, 'product_cat' );
        $product_cat_ids = wp_list_pluck( $product_categories, 'term_id' );

        // Check if the product belongs to the "restricted" category (category y)
        if (in_array(56, $product_cat_ids)) {
            // Get the cart items
            $cart_items = WC()->cart->get_cart();

            // Check if there is at least one item from the "required" category (category x) in the cart
            $has_required_item = false;
            foreach ($cart_items as $cart_item) {
                $item_categories = get_the_terms( $cart_item['product_id'], 'product_cat' );
                $item_cat_ids = wp_list_pluck( $item_categories, 'term_id' );
                if (in_array(55, $item_cat_ids)) {
                    $has_required_item = true;
                    break;
                }
            }

            // If there is at least one item from the "required" category in the cart, check if there is already an item from the "restricted" category in the cart
            if ($has_required_item) {
                $restricted_count = 0;
                foreach ($cart_items as $cart_item) {
                    $item_categories = get_the_terms( $cart_item['product_id'], 'product_cat' );
                    $item_cat_ids = wp_list_pluck( $item_categories, 'term_id' );
                    if (in_array(56, $item_cat_ids)) {
                        $restricted_count += $cart_item['quantity'];
                    }
                }

                // If there is already an item from the "restricted" category in the cart, return false to prevent the item from being added to the cart
                if ($restricted_count > 1) {
                    wc_add_notice(__('You can only have one item from Smart Device category in the cart if you added any Membership Plan.', 'woocommerce'), 'error');
                    $passed = false;
                }
            }
        }
    }

    return $passed;
}
add_filter('woocommerce_add_to_cart_validation', 'custom_add_to_cart_validation', 10, 3);

I am hoping someone to point out what i should change on the code