imp std/term
imp std/io { print, println }

fn main() {
  // check if we're in a real terminal
  if !term.is_tty() {
    println("terminal demo requires a tty")
    return nil
  }

  // terminal dimensions
  s = term.size()
  println("terminal: {s.cols}x{s.rows}")

  // styled text - returns plain text if not a tty
  err = term.style("error", { fg: "red", bold: true })
  warn = term.style("warn", { fg: "yellow" })
  ok = term.style("ok", { fg: "green" })
  println("{err}: something broke")
  println("{warn}: disk almost full")
  println("{ok}: all systems go")

  // cursor control for in-place updates
  term.hide_cursor()
  for i in range(11) {
    term.clear_line()
    pct = i * 10
    print("[{pct}%] working...")
    for j in range(200000) {}
  }
  term.clear_line()
  println(term.style("done", { fg: "green", bold: true }))
  term.show_cursor()
}