Make Product Non Purchasable for Wholesale Customer if Product Stock is Less Than Certain Amount

/* Make Product Non Purchasable for Wholesale Customer Iif Product Stock is Less Than X Amount */

add_filter( 'woocommerce_is_purchasable', 'wwpp_limit_purchase_based_on_stock', 10, 2 );

function wwpp_limit_purchase_based_on_stock( $is_purchasable, $product ) {

	//Get Product Stock Quantity 

	$product_quantity = $product->get_stock_quantity();

	//Get current user's wholesale role

	global $wc_wholesale_prices_premium;

    $user_wholesale_role = $wc_wholesale_prices_premium->wwpp_wholesale_roles->getUserWholesaleRole();

	// Check if the current user is a wholesale roles and the product stock quantity is less than 50. Change the number as needed

    if( !empty( $user_wholesale_role ) && $product_quantity <= 50 )  {

		$is_purchasable = false;

	}

	return $is_purchasable;

}