use openssl::asn1::{Asn1Time, Asn1TimeRef};

/// Clone Asn1 time
pub fn clone_asn1_time(time: &Asn1TimeRef) -> anyhow::Result<Asn1Time> {
    let diff = time.diff(Asn1Time::from_unix(0)?.as_ref())?;
    let days = diff.days.abs();
    let secs = diff.secs.abs();

    Ok(Asn1Time::from_unix((days * 3600 * 24 + secs) as i64)?)
}

#[cfg(test)]
mod test {
    use crate::crypto::openssl_utils::clone_asn1_time;
    use openssl::asn1::Asn1Time;
    use std::cmp::Ordering;

    #[test]
    fn test_clone_asn1_time() {
        let a = Asn1Time::from_unix(10).unwrap();
        let b = clone_asn1_time(a.as_ref()).unwrap();
        assert_eq!(a.compare(&b).unwrap(), Ordering::Equal);
    }
}