use ring::digest;

fn calculate_digest(username: &str, realm: &str, password: &str, method: &str, uri: &str, nonce: &str, cnonce: &str) -> String {
    let ha1 = format!("{}:{}:{}", username, realm, password);
    let ha1_digest = digest::digest(&digest::MD5, ha1.as_bytes());

    let ha2 = format!("{}:{}", method, uri);
    let ha2_digest = digest::digest(&digest::MD5, ha2.as_bytes());

    let response = format!("{:x}:{nonce}:{nc}:{cnonce}:{qop}:{ha2}", ha1_digest, nonce, "00000001", cnonce, "auth", ha2_digest);
    let response_digest = digest::digest(&digest::MD5, response.as_bytes());

    format!("{:x}", response_digest)
}

fn main() {
    let username = "alice";
    let realm = "realm";
    let password = "password";
    let method = "GET";
    let uri = "/path";
    let nonce = "1234567890";
    let cnonce = "0987654321";

    let digest = calculate_digest(username, realm, password, method, uri, nonce, cnonce);
    println!("Digest: {}", digest);
}