use std::{
	error::Error,
	fs::File,
	sync::Arc,
};

use tokio::sync::oneshot;

mod load_toml;

use ptth::relay;
use ptth::relay::RelayState;

#[tokio::main]
async fn main () -> Result <(), Box <dyn Error>> {
	let config_file = load_toml::load ("config/ptth_relay.toml");
	
	eprintln! ("ptth_relay Git version: {:?}", ptth::git_version::GIT_VERSION);
	
	let rx = {
		let (tx, rx) = oneshot::channel::<()> ();
		
		// I have to put the tx into a Cell here so that if Ctrl-C gets
		// called multiple times, we won't send multiple shutdowns to the
		// oneshot channel. (Which would be a compile error)
		
		let tx = Some (tx);
		let tx = std::cell::Cell::new (tx);
		
		ctrlc::set_handler (move ||{
			let tx = tx.replace (None);
			
			if let Some (tx) = tx {
				tx.send (()).unwrap ();
			}
		}).expect ("Error setting Ctrl-C handler");
		
		rx
	};
	
	relay::run_relay (
		Arc::new (RelayState::from (&config_file)),
		rx
	).await
}