// #[get("/")]
// async fn hello(state : web::Data<VisitCounter>) -> impl Responder {
//     HttpResponse::Ok().body(format!("Hello world! {}", state.count_visit()))
// }
//
// #[post("/echo")]
// async fn echo(req_body: String) -> impl Responder {
//     HttpResponse::Ok().body(req_body)
// }
// async fn static_files(req: HttpRequest) -> actix_web::Result<NamedFile> {
//     let path: PathBuf = req.match_info().query("filename").parse().unwrap();
//
//
//
//     Ok(NamedFile::open(path)?)
// }
//
// #[get("/users/{user_id}/{friend}")] // <- define path parameters
// async fn user_friend(web::Path((user_id, friend)): web::Path<(u32, String)>, state : web::Data<VisitCounter>) -> impl Responder {
//     HttpResponse::Ok()
//         .header("Content-Type", "text/html")
//         .body(format!("<h1>Welcome {}, user_id {}!</h1>Visitor nr {}\n", friend, user_id, state.count_visit()))
// }