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use core::fmt;
use super::{FixedOffset, LocalResult, Offset, TimeZone};
use naive::{NaiveDate, NaiveDateTime};
#[cfg(all(
feature = "clock",
not(all(target_arch = "wasm32", not(target_os = "wasi"), feature = "wasmbind"))
))]
use std::time::{SystemTime, UNIX_EPOCH};
#[cfg(feature = "clock")]
use {Date, DateTime};
#[derive(Copy, Clone, PartialEq, Eq)]
pub struct Utc;
#[cfg(feature = "clock")]
impl Utc {
pub fn today() -> Date<Utc> {
Utc::now().date()
}
#[cfg(not(all(target_arch = "wasm32", not(target_os = "wasi"), feature = "wasmbind")))]
pub fn now() -> DateTime<Utc> {
let now =
SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch");
let naive = NaiveDateTime::from_timestamp(now.as_secs() as i64, now.subsec_nanos() as u32);
DateTime::from_utc(naive, Utc)
}
#[cfg(all(target_arch = "wasm32", not(target_os = "wasi"), feature = "wasmbind"))]
pub fn now() -> DateTime<Utc> {
let now = js_sys::Date::new_0();
DateTime::<Utc>::from(now)
}
}
impl TimeZone for Utc {
type Offset = Utc;
fn from_offset(_state: &Utc) -> Utc {
Utc
}
fn offset_from_local_date(&self, _local: &NaiveDate) -> LocalResult<Utc> {
LocalResult::Single(Utc)
}
fn offset_from_local_datetime(&self, _local: &NaiveDateTime) -> LocalResult<Utc> {
LocalResult::Single(Utc)
}
fn offset_from_utc_date(&self, _utc: &NaiveDate) -> Utc {
Utc
}
fn offset_from_utc_datetime(&self, _utc: &NaiveDateTime) -> Utc {
Utc
}
}
impl Offset for Utc {
fn fix(&self) -> FixedOffset {
FixedOffset::east(0)
}
}
impl fmt::Debug for Utc {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Z")
}
}
impl fmt::Display for Utc {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "UTC")
}
}