//! mDNS scan for Supernote devices on the local network.
//!
//!     cargo run --example discover
//!     cargo run --example discover -- 10   # wait up to 10 seconds

use std::time::Duration;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let secs: u64 = std::env::args().nth(1).as_deref().unwrap_or("5").parse()?;
    println!("scanning for {secs}s...");

    let devices = supernote_push::discover(Duration::from_secs(secs))?;
    if devices.is_empty() {
        println!("no devices found.");
        println!("make sure Wi-Fi Transfer is on: Files app -> menu -> Browse & Access.");
        return Ok(());
    }
    for d in devices {
        println!("  {}", d.host());
    }
    Ok(())
}