havn 0.3.7

A fast configurable port scanner with reasonable defaults
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use scanner::{AllPortStatus, host_info};
use terminal::{print, spinner::Spinner};

mod parse_arg;
mod port_descriptions;
mod scanner;
mod terminal;

/// On exit re-show the cursor
fn exit(code: i32) {
    Spinner::show_cursor();
    std::process::exit(code);
}

/// Spawn a thread to watch for exit signals, so can show cursor correctly
fn tokio_signal() {
    tokio::spawn(async move {
        tokio::signal::ctrl_c().await.ok();
        exit(1);
    });
}

async fn start() {
    let cli_args = parse_arg::CliArgs::new();
    terminal::text_color(&cli_args);
    let exit_error = || print::address_error(&cli_args);

    tokio_signal();

    let Ok(host_info) = host_info::HostInfo::try_from(&cli_args.address).await else {
        return exit_error();
    };
    let Some(ip) = host_info.get_ip(&cli_args) else {
        return exit_error();
    };

    print::name_and_target(&cli_args, ip);
    print::extra_ips(&host_info, ip);

    let spinner = cli_args.verbose.is_none().then(Spinner::new);
    spinner.as_ref().map(terminal::spinner::Spinner::start);
    let now = std::time::Instant::now();
    let scan_output = AllPortStatus::scan_ports(cli_args, ip).await;
    spinner.as_ref().map(terminal::spinner::Spinner::stop);
    let done = now.elapsed();

    print::scan_time(&scan_output, done);
    print::result_table(&scan_output);
}

#[tokio::main]
async fn main() {
    tokio::spawn(start()).await.ok();
}