mod config;
mod error;
mod handler;
mod host;
mod serde_addr;

use std::sync::Arc;

use error::{AppResult, HandlerError};
use handler::handler;

use socks5_server as socks;
use tokio::{io::AsyncWriteExt, net::TcpListener};

#[tokio::main]
async fn main() -> AppResult<()> {
    let config = Arc::new(config::parse()?);
    let auth = Arc::new(socks::auth::NoAuth);

    let listener = TcpListener::bind((config.host.as_str(), config.port)).await?;
    let server = socks::Server::new(listener, auth);

    while let Ok((conn, _addr)) = server.accept().await {
        let config = config.clone();
        tokio::spawn(async move {
            match handler(conn, config).await {
                Ok(()) => {}
                Err(HandlerError {
                    inner: e,
                    stream: mut conn,
                }) => {
                    eprintln!("{:?}", e);
                    let _ = conn.shutdown().await;
                }
            }
        });
    }

    Ok(())
}