// Check if user is logged in
    if ( is_user_logged_in() && is_product() ) {
        global $product;
        $current_user = wp_get_current_user();
        $product_id = $product->get_id();

        // Check if the current user has bought the current product
        if ( wc_customer_bought_product( $current_user->user_email, $current_user->ID, $product_id ) ) {
            // Message to display if the user already owns the product
            $message = '<p class="already-owned-message">✅ You already own this product.</p>';
            
            // For downloadable products, you can provide a direct link to downloads
            if ($product->is_downloadable()) {
                $message .= '<p><a href="' . esc_url( wc_get_endpoint_url( 'downloads', '', wc_get_page_permalink( 'myaccount' ) ) ) . '" class="button view-downloads-button">View your downloads</a></p>';
            } else {
                // For other products, provide a link to the my account page
                $message .= '<p><a href="' . esc_url( wc_get_page_permalink( 'myaccount' ) ) . '" class="button my-account-button">Manage in My Account</a></p>';
            }
            
            // Output the custom message and links, preventing the add to cart button from showing
            echo $message;
            return true; // Stop standard button from displaying
        }
    }
    return false; // Continue to show standard button
}