secretive/Sources/SecretiveUpdater/main.swift

import Foundation

class ServiceDelegate: NSObject, NSXPCListenerDelegate {

    let exported: UpdaterProtocol

    init(exportedObject: UpdaterProtocol) {
        self.exported = exportedObject
    }

    func listener(_ listener: NSXPCListener, shouldAcceptNewConnection newConnection: NSXPCConnection) -> Bool {
        newConnection.exportedInterface = NSXPCInterface(with: UpdaterProtocol.self)
        newConnection.exportedObject = exported
        newConnection.resume()
        return true
    }

}

let updater = Updater()
let delegate = ServiceDelegate(exportedObject: Updater())
let listener = NSXPCListener(machServiceName: Bundle.main.bundleIdentifier!)
listener.delegate = delegate
listener.resume()
try "Hello world".data(using: .utf8)?.write(to: URL(fileURLWithPath: "/Users/max/Downloads/\(UUID().uuidString).txt"))
RunLoop.current.run()