use crate::err::Error;

#[cfg(unix)]
pub async fn listen() -> Result<String, Error> {
	// Import the OS signals
	use tokio::signal::unix::{signal, SignalKind};
	// Get the operating system signal types
	let mut sighup = signal(SignalKind::hangup())?;
	let mut sigint = signal(SignalKind::interrupt())?;
	let mut sigquit = signal(SignalKind::quit())?;
	let mut sigterm = signal(SignalKind::terminate())?;
	// Listen and wait for the system signals
	tokio::select! {
		// Wait for a SIGQUIT signal
		_ = sighup.recv() => {
			Ok(String::from("SIGHUP"))
		}
		// Wait for a SIGINT signal
		_ = sigint.recv() => {
			Ok(String::from("SIGINT"))
		}
		// Wait for a SIGQUIT signal
		_ = sigquit.recv() => {
			Ok(String::from("SIGQUIT"))
		}
		// Wait for a SIGTERM signal
		_ = sigterm.recv() => {
			Ok(String::from("SIGTERM"))
		}
	}
}

#[cfg(windows)]
pub async fn listen() -> Result<String, Error> {
	// Import the OS signals
	use tokio::signal::windows;
	// Get the operating system signal types
	let mut exit = windows::ctrl_c()?;
	let mut leave = windows::ctrl_break()?;
	let mut close = windows::ctrl_close()?;
	let mut shutdown = windows::ctrl_shutdown()?;
	// Listen and wait for the system signals
	tokio::select! {
		// Wait for a CTRL-C signal
		_ = exit.recv() => {
			Ok(String::from("CTRL-C"))
		}
		// Wait for a CTRL-BREAK signal
		_ = leave.recv() => {
			Ok(String::from("CTRL-BREAK"))
		}
		// Wait for a CTRL-CLOSE signal
		_ = close.recv() => {
			Ok(String::from("CTRL-CLOSE"))
		}
		// Wait for a CTRL-SHUTDOWN signal
		_ = shutdown.recv() => {
			Ok(String::from("CTRL-SHUTDOWN"))
		}
	}
}