use std::fs::OpenOptions;
use std::io::{Write, ErrorKind};

fn main() {
    let path = OpenOptions::new()
        .create_new(true)
        .write(true)
        .open("src/lol.rs");

    match path {
        Err(error) => {
            match error.kind() {
                ErrorKind::AlreadyExists => {}
                _ => panic!("{}", error),
            }
        }
        Ok(f) => {
            write!(&f, "koan!(\"the_truth\");\n").unwrap();
        }
    }
}