use std::io::{stdout, Write};
use md5::{Digest, Md5};

fn has_8_chars(input: &Vec<char>) -> bool {
    let mut num_spaces = 0;
    for ch in input {
        if *ch == ' ' { num_spaces += 1 }
    }
    num_spaces == 0
}

fn display_current_password(input: &Vec<char>) {
    print!("\x1b[2K\rPassword: ");
    for char in input {
        if *char == ' ' { print!("_"); } else { print!("{}", char) };
    }
}

fn main() {
    let input = "wtnhxymk";
    let mut password = vec![' '; 8];
    let mut last_password_displayed = password.clone();

    for index in 2231253..=u32::MAX {
        let to_hash = format!("{}{}", input, index);
        let as_hash = format!("{:x}", Md5::digest(to_hash.as_bytes()));
        if as_hash.starts_with("00000") {
            // println!("Found hash with {index} -> {as_hash}");
            let ( sixth,balance ) = as_hash.as_str().split_at(5).1.split_at(1);
            let ( seventh, _) = balance.split_at(1);
            stdout().flush().unwrap();
            let index_for_new_char = sixth.parse::<u32>().unwrap_or(9);
            if index_for_new_char < 9 && password[index_for_new_char as usize] == ' ' {
                password[index_for_new_char as usize] = seventh.parse().unwrap();
            }
            let mut to_disp = String::new();
            for char in &password {
                to_disp.push(*char);
            }
            if password != last_password_displayed {
                last_password_displayed = password.clone();
                display_current_password(&last_password_displayed);
            }
            if has_8_chars(&password.clone()) { break }
        }
    }
    println!("\nPassword is [{password:?}]");
}
// 437e60fc