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use serde::{Deserialize, Serialize};
use std::convert::TryFrom;
#[derive(
Serialize,
Deserialize,
Default,
Clone,
Debug,
Hash,
PartialEq,
Eq,
PartialOrd,
Ord,
juniper::GraphQLObject,
)]
pub struct Duration {
secs: i32,
nanos: i32,
}
impl Duration {
pub fn secs(&self) -> u32 {
u32::try_from(self.secs).unwrap()
}
pub fn nanos(&self) -> u32 {
u32::try_from(self.nanos).unwrap()
}
pub fn from_std(
duration: std::time::Duration,
) -> std::result::Result<Duration, Box<dyn std::error::Error>> {
let total_nanos = duration.as_nanos();
let secs = total_nanos / 1_000_000_000;
let nanos = total_nanos - (secs * 1_000_000_000);
Ok(Duration {
secs: i32::try_from(secs)?,
nanos: i32::try_from(nanos)?,
})
}
pub fn to_std(&self) -> std::result::Result<std::time::Duration, Box<dyn std::error::Error>> {
Ok(std::time::Duration::new(
u64::try_from(self.secs)?,
u32::try_from(self.nanos)?,
))
}
}
pub fn format(duration: &std::time::Duration) -> String {
match duration.as_micros() > 999 {
false => format!("{}\u{00b5}s", duration.as_micros()),
true => match duration.as_millis() > 999 {
false => format!("{}ms", duration.as_millis()),
true => match duration.as_secs() > 99 {
false => format!("{}s", duration.as_secs()),
true => match duration.as_secs() > 5940 {
false => format!("{}m", duration.as_secs() / 60),
true => match duration.as_secs() > 356400 {
false => format!("{}h", duration.as_secs() / 3600),
true => match duration.as_secs() > 8553600 {
false => format!("{}d", duration.as_secs() / 86400),
true => format!("{} months", duration.as_secs() / (86400 * 30)),
},
},
},
},
},
}
}
#[cfg(test)]
use crate::duration;
#[test]
fn usage() {}
#[test]
fn format_test() {
assert_eq!(
"15µs",
duration::format(&std::time::Duration::from_micros(15))
);
let d = Duration::from_std(std::time::Duration::new(70_000, 4321)).unwrap();
assert_eq!(70_000, d.secs());
assert_eq!(4321, d.nanos());
let d2 = d.to_std().unwrap();
assert_eq!(70_000, d2.as_secs());
}