test.scala

path("in") {
      extractUri { uri =>
        val st:Future[String] = getDefaultStrategy("abc").map(st=>st.name).recover{case f =>  "invalid" }
        val urlTo =  s match {
            case "case1" => UriBuilder.build("abc").withPath(Uri.Path("/test/continue")).withQuery(Uri.Query(uri.rawQueryString))
            case "case2" => UriBuilder.build("abc").withPath(Uri.Path("/test/login")).withQuery(Uri.Query(uri.rawQueryString))
            case _ => UriBuilder.build("abc").withPath(Uri.Path("/test/login")).withQuery(Uri.Query(uri.rawQueryString))
          }
        
        // After the future resolve we want to redirect using redirect(urlTo, StatusCodes.SeeOther)