use std::net::TcpListener;

pub fn spawn_app() -> String {
    let listener = TcpListener::bind("127.0.0.1:0").expect("Failed to bind random port");
    let _ = listener.set_nonblocking(true);
    // We retrieve the port assigned to us by the OS
    let port = listener.local_addr().unwrap().port();
    let server = nuchat::run(
        tokio::net::TcpListener::from_std(listener)
            .expect("Failed to convert from_std to tokio listener"),
    )
    .expect("Failed to bind address");
    tokio::spawn(server.into_future());
    // We return the application address to the caller!
    format!("http://127.0.0.1:{port}")
}