use totp_rs::{Algorithm, TotpUrlError, TOTP};

pub use totp_rs::Secret;

// error
#[derive(thiserror::Error)]
// the rest
#[derive(Debug)]
pub enum Error {
    #[error("Totp url error: {0}")]
    Url(#[from] TotpUrlError),

    #[error("Totp secret error: {0}")]
    Secret(String),
}

pub fn new(secret: Vec<u8>, issuer: Option<String>, account_name: String) -> Result<TOTP, Error> {
    TOTP::new(Algorithm::SHA1, 6, 1, 30, secret, issuer, account_name).map_err(Error::Url)
}

pub fn secret_to_bytes(secret: &Secret) -> Result<Vec<u8>, Error> {
    secret
        .to_bytes()
        .map_err(|e| Error::Secret(format!("{:?}", e)))
}