use nix::Error as NixError;
use nix::sys::termios;
use nix::sys::termios::Termios;
// use nix::unistd;
use std::io;
use std::io::{BufReader, Error};
use std::io::prelude::*;

// Redefine the posix constants for rust land
const STDIN_FILENO: i32 = 0;
const STDOUT_FILENO: i32 = 1;
const STDERR_FILENO: i32 = 2;

fn enable_raw_mode() -> Result<(), Error> {
    let raw: Result<Termios, NixError> = termios::tcgetattr(STDIN_FILENO);
    let mut raw = raw.unwrap();
    raw.local_flags.remove(termios::LocalFlags::ECHO);

    match termios::tcsetattr(STDIN_FILENO, termios::SetArg::TCSAFLUSH, &raw) {
        Ok(()) => Ok(()),
        _ => panic!("Failed to set raw mode"),
    }
}

fn main() -> Result<(), Error> {
    enable_raw_mode()?;

    loop {
        let stdin = io::stdin();
        let mut in_str = String::new();
        let mut input = BufReader::new(stdin.take(1));
        input.read_to_string(&mut in_str)?;

        let mut chars = in_str.chars();
        let char = chars.next().unwrap();

        if char == 'q' {
            return Ok(());
        }
    }

    Ok(())
}