asking.swift

//Look to geolocation permissions request to illustrate.
//Request is constructed according to `with` object
//
//Ask always permissions only if `ask` `with` `CLAuthorizationStatus.authorizedAlways` input argument
//Otherwise `ask` only in use permissions
//
extension CLAuthorizationStatus: Asking {

    static func ask<E>(with: Any?, in pipe: Pipe, expect: Expect<E>) {
        let source = with as? CLLocationManager ?? pipe.get()
        
        switch with as? CLAuthorizationStatus {
            case .authorizedAlways:
                source.requestAlwaysAuthorization()

            case .authorizedWhenInUse, .none:
                source.requestWhenInUseAuthorization()

            default:
                break
        }
    }

}