use std::{env, sync::Arc};
use tokio::net::TcpListener;
use crate::server::handle_connection;

mod http;
mod script;
mod server;

#[tokio::main]
async fn main() {

    let config = match script::Config::load() {
        Ok(config) => Arc::new(config),
        Err(err) => {
            eprintln!("failed to load config: {err}");
            return
        }
    };

    let port = env::var("PORT")
        .unwrap_or_else(|_| String::from("8080"))
        .parse::<u16>()
        .unwrap_or_else(|_| 8080);

    let addr = format!("0.0.0.0:{port}");

    let Ok(listener) = TcpListener::bind(&addr).await else {
        println!("failed to bind {addr}");
        return
    };

    println!("listening to tcp requests on {addr}");

    loop {
        let Ok((socket, _)) = listener.accept().await else {
            println!("failed to accept new connection");
            continue
        };

        let config = config.clone();

        tokio::spawn(async move {
            handle_connection(socket, config).await;
        });
    }
}