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use std::fmt;
use crate::Integer;
/// A structured field value [date].
///
/// Dates represent an integer number of seconds from the Unix epoch.
///
/// [`Version::Rfc9651`][`crate::Version::Rfc9651`] supports bare items of this
/// type; [`Version::Rfc8941`][`crate::Version::Rfc8941`] does not.
///
/// [date]: <https://httpwg.org/specs/rfc9651.html#date>
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
pub struct Date(Integer);
impl Date {
/// The minimum value for a parsed or serialized date, corresponding to
/// [`Integer::MIN`] seconds from the Unix epoch.
pub const MIN: Self = Self::from_unix_seconds(Integer::MIN);
/// The maximum value for a parsed or serialized date, corresponding to
/// [`Integer::MAX`] seconds from the Unix epoch.
pub const MAX: Self = Self::from_unix_seconds(Integer::MAX);
/// The Unix epoch: `1970-01-01T00:00:00Z`.
pub const UNIX_EPOCH: Self = Self::from_unix_seconds(Integer::ZERO);
/// Returns the date as an integer number of seconds from the Unix epoch.
#[must_use]
pub fn unix_seconds(&self) -> Integer {
self.0
}
/// Creates a date from an integer number of seconds from the Unix epoch.
#[must_use]
pub const fn from_unix_seconds(v: Integer) -> Self {
Self(v)
}
}
impl fmt::Display for Date {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "@{}", self.unix_seconds())
}
}