+ /// Returns the Duration remaining until the invoice expires.
+ #[cfg(feature = "std")]
+ pub fn duration_until_expiry(&self) -> Duration {
+ SystemTime::now().duration_since(SystemTime::UNIX_EPOCH)
+ .map(|now| self.expiration_remaining_from_epoch(now))
+ .unwrap_or(Duration::from_nanos(0))
+ }
+
+ /// Returns the Duration remaining until the invoice expires given the current time.
+ /// `time` is the timestamp as a duration since the Unix epoch.
+ pub fn expiration_remaining_from_epoch(&self, time: Duration) -> Duration {
+ self.expires_at().map(|x| x.checked_sub(time)).flatten().unwrap_or(Duration::from_nanos(0))
+ }
+