use std::time::SystemTime;

use crate::util::HttpDate;

/// `Date` header, defined in [RFC7231](https://datatracker.ietf.org/doc/html/rfc7231#section-7.1.1.2)

///

/// The `Date` header field represents the date and time at which the

/// message was originated.

///

/// ## ABNF

///

/// ```text

/// Date = HTTP-date

/// ```

///

/// ## Example values

///

/// * `Tue, 15 Nov 1994 08:12:31 GMT`

///

/// # Example

///

/// ```

/// use headers::Date;

/// use std::time::SystemTime;

///

/// let date = Date::from(SystemTime::now());

/// ```

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]

pub struct Date(HttpDate);

derive_header! {

    Date(_),

    name: DATE

}

impl From<SystemTime> for Date {

    fn from(time: SystemTime) -> Date {

        Date(time.into())

    }

}

impl From<Date> for SystemTime {

    fn from(date: Date) -> SystemTime {

        date.0.into()

    }

}