I'm looking for the simplest way to proceed.

We have a Javascript button in Salesforce classic. It is on a custom object called Addresses. We have customers with multiple addresses they move back and forth to and from, so we list the addresses in this object. There is a button on the records that they users push to populate the addresse in that record as the current address in the account.
Here is the JS button code.

{!REQUIRESCRIPT("/soap/ajax/19.0/connection.js")} 
{!REQUIRESCRIPT("/soap/ajax/19.0/apex.js")} 
var addr = "{!WV_Addresses__c.Id}"; 
var id = sforce.apex.execute("WV_AddressService","CopySingleAddress", {AddressID:addr}); 
window.alert("Address has been copied." );

This calls a Webservice program...


global class WV_AddressService {
  WebService static void CopySingleAddress(ID AddressID){
    WV_Addresses__c addr = [Select w.Worker_Profile__c, w.Type__c, w.SystemModstamp, w.Street__c, w.State__c, w.Postal_Code__c, w.OwnerId, w.Name, w.LastModifiedDate, w.LastModifiedById, w.IsDeleted, w.Id, w.Full_Address__c, w.Current__c, w.CreatedDate, w.CreatedById, w.Country__c, w.City__c, w.Active_On_Date__c, w.Mobile_Phone__c From WV_Addresses__c w WHERE Id = : AddressID];
    
    WV_AddressController.CopyToAccount(addr);
  }
}

Which calls the WV_AddressController.

Obviously the button does not work in Lightning, but the rest of the code works wonderfully and is a big timesaver for our users.All I ned to do is to replace the button that calls the Webservice with the 2 lines of script that the javascript button is currently calling. What is the easiest way to get than done?

Thanks!