interfere with Woocommerce

I found that, this plugin use WooCommerce to charge wallets ( Private Product)

how can i change my code only for Public Products ?

@ehsan991 Please use the attached updated code.

// Deny purchase if already purchased
add_filter( 'woocommerce_is_purchasable', 'deny_purchase_if_already_purchased', 9999, 2 );
 function deny_purchase_if_already_purchased( $is_purchasable, $product ) {
	if(get_wallet_rechargeable_product()->get_id() === $product->get_id()){
		return $is_purchasable;
	}
	if ( is_user_logged_in() && wc_customer_bought_product( '', get_current_user_id(), $product->get_id() ) ) {
		$is_purchasable = false;
		echo "already_purchased";
	}
   return $is_purchasable; 
}

Thank you very much, it was very helpful
But when the wallet-product is in the cart, the cart page does not open

debug.log:

#35 {main}
thrown in mywebsite/wp-content/plugins/woocommerce/includes/class-wc-cart.php on line 2032

• This reply was modified 2 years, 10 months ago by ehsan991.

@ehsan991 Please share detailed error log.

The problem was solved with a small change
I put the code so that others can use it as well

// Deny purchase if already purchased
add_filter( 'woocommerce_is_purchasable', 'deny_purchase_if_already_purchased', 9999, 2 );
 function deny_purchase_if_already_purchased( $is_purchasable, $product ) {
   if ( is_user_logged_in() && wc_customer_bought_product( '', get_current_user_id(), $product->get_id() ) && get_post_status()!='private' ) {
      $is_purchasable = false;
      echo "already_purchased";
   }
   return $is_purchasable; 
}