aors 0.5.0

Useful rs tools for Advent of Code
Documentation 
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use std::fs;

use crate::ANSWER_FOLDER;

const TEMPLATE: &str = "mod helpers;

#[aors::main]
fn main(input: &str) -> (i32, i32) {
    (0, 0)
}
";

pub fn get(day: u8, year: u32, cookie: &str) {
    let url = format!("https://adventofcode.com/{}/day/{}/input", year, day);
    let day = format!("{:0>2}", day);

    let input = get_req(&url, cookie).expect("Failed to fetch input");
    println!("{}", input);

    touch(
        &format!("input_examples/{}.in", day),
        "",
        "failed to create input file",
    );
    touch(
        &format!("inputs/{}.in", day),
        &input,
        "failed to write input to file",
    );
    touch(
        &format!("{}/{}p1.sol", ANSWER_FOLDER, day),
        "",
        "failed to create answer file",
    );
    touch(
        &format!("{}/{}p2.sol", ANSWER_FOLDER, day),
        "",
        "failed to create answer file",
    );
    touch(
        &format!("src/bin/{}.rs", day),
        TEMPLATE,
        "failed to create <DAY>.rs file",
    );
}

fn get_req(url: &str, cookie: &str) -> Result<String, ureq::Error> {
    let res = ureq::post(url)
        .header("Accept", "text/plain")
        .header("Cookie", &format!("session={}", cookie))
        .send_form([("session", cookie)])?;
    res.into_body().read_to_string()
}

fn touch(path: &str, contents: &str, error_msg: &str) {
    if let Err(_) = fs::File::open(path) {
        fs::write(path, contents).expect(error_msg);
    }
}