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use crate::{timestamp, DefaultTimezone, Temporal, TemporalExt};
use serde::{Deserialize, Serialize};
use std::convert::{From, TryFrom};
use strum::EnumVariantNames;
#[derive(Clone, Debug, Deserialize, EnumVariantNames, Eq, Hash, PartialEq, Serialize)]
#[strum(serialize_all = "snake_case")]
pub enum Timestamp {
Rfc3339(String),
Ts(i64),
}
impl Timestamp {
pub fn new() -> Self {
Self::Ts(timestamp())
}
pub fn now() -> chrono::DateTime<DefaultTimezone> {
chrono::Utc::now()
}
pub fn rfc3339() -> Self {
Self::Rfc3339(chrono::Utc::now().to_rfc3339())
}
pub fn timestamp(&self) -> i64 {
self.into()
}
}
impl Default for Timestamp {
fn default() -> Self {
Self::Ts(timestamp())
}
}
impl std::fmt::Display for Timestamp {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", serde_json::to_string(&self).unwrap())
}
}
impl Temporal for Timestamp {
fn created(&self) -> i64 {
self.into()
}
}
impl TemporalExt for Timestamp {}
impl From<&Timestamp> for Timestamp {
fn from(data: &Timestamp) -> Self {
data.clone()
}
}
impl From<&chrono::DateTime<chrono::Utc>> for Timestamp {
fn from(ts: &chrono::DateTime<chrono::Utc>) -> Self {
Self::Ts(ts.timestamp())
}
}
impl From<i64> for Timestamp {
fn from(data: i64) -> Self {
Self::Ts(data)
}
}
impl From<Timestamp> for i64 {
fn from(data: Timestamp) -> i64 {
match data {
Timestamp::Rfc3339(ts) => chrono::DateTime::parse_from_rfc3339(ts.as_str())
.unwrap()
.timestamp(),
Timestamp::Ts(ts) => ts,
}
}
}
impl From<&Timestamp> for i64 {
fn from(data: &Timestamp) -> i64 {
data.clone().into()
}
}
impl TryFrom<String> for Timestamp {
type Error = crate::BoxError;
fn try_from(data: String) -> Result<Self, Self::Error> {
Self::try_from(data.as_str())
}
}
impl TryFrom<&str> for Timestamp {
type Error = crate::BoxError;
fn try_from(value: &str) -> Result<Self, Self::Error> {
let dt = chrono::DateTime::parse_from_rfc3339(value)?;
Ok(Self::Ts(dt.timestamp()))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_timestamp() {
let boundary = Timestamp::now();
let a = Timestamp::from(&boundary);
let b = Timestamp::try_from(boundary.to_rfc3339()).ok().unwrap();
assert_eq!(&a, &b);
}
#[test]
fn test_timestamp_default() {
let m = Timestamp::default();
let a = Timestamp::from(&m);
let b: i64 = Timestamp::from(&a).into();
assert_eq!(&m, &a);
assert_eq!(&a.timestamp(), &b);
}
}