use std::fs::File;
use std::io::{self, Read};

fn read_username_short() -> Result<String, io::Error> {
    let mut username_file = File::open("username.txt")?;
    let mut username = String::new();
    username_file.read_to_string(&mut username)?;
    Ok(username)
}

fn read_username_long() -> Result<String, io::Error> {
    let file_result = File::open("username.txt");

    let mut username_file = match file_result {
        Ok(file) => file,
        Err(e) => return Err(e),
    };

    let mut username = String::new();

    match username_file.read_to_string(&mut username) {
        Ok(_) => Ok(username),
        Err(e) => Err(e),
    }
}

fn main() {
    let username_long = read_username_long().expect("Failed to read username");
    let username_short = read_username_short().expect("Failed to read username");

    println!("{}", username_long);
    println!("{}", username_short);
}