use rand::Rng;
use std::cmp::Ordering;

fn main() {

    println!("Welcome to bingame! Type \"quit\" anytime to stop playing.");

    let mut liminput = String::new();

    println!("Provide an upward limit for generated numbers: ");
    std::io::stdin()
    .read_line(&mut liminput)
    .unwrap();

    let limit = liminput
        .trim()
        .parse::<u32>()
        .unwrap();

    // generate random number

    let nombre: u32 = rand::thread_rng().gen_range(0..limit);

    // convert number from decimal to binary notation

    let mut binvec = vec![];

    let mut countdown = nombre;

    while countdown > 0 {

        binvec.push(countdown % 2);
        countdown /= 2;

    }

    let mut binnery = String::new();

    for i in binvec {

        binnery = i.to_string() + &binnery;

    }

    let binary = binnery
    .parse::<u32>()
    .unwrap();

    println!("Type {} in binary", nombre);
    let mut input = String::new();

    std::io::stdin()
    .read_line(&mut input)
    .unwrap();

    let guess = input
    .trim()
    .parse::<u32>()
    .unwrap();

    match guess.cmp(&binary) {
        Ordering::Equal => {
            println!("That's correct! {} in binary is {}!", nombre, binnery);
        }
        Ordering::Greater | Ordering::Less => {
            println!("Nope! {} in binary is {}!", nombre, binnery);
        }
    }
}