extern crate clap;
extern crate crossterm;
extern crate engine;

type StdResult<T> = Result<T, Box<dyn std::error::Error>>

pub fn main () -> StdResult<()> {
    let cli = Cli::parse();
    let engine = run_jack_engine(move |_: &Client, _: &ProcessScope| {
        Control::Continue
    });
    let app = App::new()
}

pub struct App {
    sleep: std::time::Duration
}

impl App {
    fn init () -> Self {
        Self {
            sleep: std::time::Duration::from_millis(16)
        }
    }
    fn run (&self) -> StdResult<()> {
        loop {
            self.update()?;
            self.render()?;
            std::thread::sleep(self.sleep);
        }
    }
    fn update (&self) -> StdResult<()> {
    }
    fn render (&self) -> StdResult<()> {
        use crossterm::*;
        let (cols, rows) = terminal::size()?;
    }
}