extern crate actix_web;
use actix_web::{web, App, Responder, HttpServer};
use std::sync::{Arc, Mutex};

struct AppData {
    counter: usize,
}

fn index(data: web::Data<Arc<Mutex<AppData>>>, info: web::Path<(String, u32)>) -> impl Responder {
    data.lock().unwrap().counter += 1;
    format!("Hello {}! id:{}", info.0, info.1)
}

fn counter(data: web::Data<Arc<Mutex<AppData>>>) -> impl Responder {
    format!("Counter: {}", data.lock().unwrap().counter)
}

fn main() -> std::io::Result<()> {
    let shared_state = Arc::new(Mutex::new(AppData{counter: 0}));

    HttpServer::new(move || App::new()
        .data(shared_state.clone())
        .route("/{name}/{id}", web::get().to(index))
        .route("/counter", web::get().to(counter))
    )
    .bind("127.0.0.1:8000")?
    .run()
}