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use std::{fmt::Display, str::FromStr};
use anyhow::{Context, Result};
use chrono::{DateTime, Datelike as ChronoDatelike, NaiveDate, Timelike as ChronoTimelike, Utc};
use diesel::{
backend::Backend,
deserialize::{self, FromSql, FromSqlRow},
expression::AsExpression,
serialize::{self, ToSql},
sql_types::Text,
sqlite::Sqlite,
};
use serde::{Deserialize, Serialize};
use schist_traits::{dateable::Dateable, nowlike::Nowlike, timeable::Timeable};
#[derive(
PartialEq,
Eq,
PartialOrd,
Ord,
Serialize,
Deserialize,
Clone,
Debug,
AsExpression,
FromSqlRow,
)]
#[diesel(sql_type=Text)]
pub struct DatetimeUtc {
chrono_datetime_utc: DateTime<Utc>,
}
impl DatetimeUtc {
pub fn from_ymd_and_hms(year: i32, month: u32, day: u32, hour: u32, min: u32, sec: u32) -> Result<Self> {
Ok(Self { chrono_datetime_utc: NaiveDate
::from_ymd_opt(year, month, day)
.with_context(|| format!("failed to construct datetime from ymd {:04}-{:02}-{:02}", year, month, day))?
.and_hms_opt(hour, min, sec)
.with_context(|| format!("failed to construct datetime from hms {:02}:{:02}:{:02}", hour, min, sec))?
.and_utc()
})
}
}
impl FromStr for DatetimeUtc {
type Err = anyhow::Error;
/// Constructs DatetimeUtc from a date string in ISO format, in UTC
/// Example: "2024-10-24T10:30:00.000" -> 10.30am 24 Oct 2024 UTC
fn from_str(datetime_str: &str) -> Result<Self> {
let chrono_datetime_utc = datetime_str.parse::<DateTime<Utc>>()?;
Ok(Self {
chrono_datetime_utc,
})
}
}
impl Display for DatetimeUtc {
/// Converts to a date string in ISO format, in UTC
/// Example: 10.30am 24 Oct 2024 UTC -> "2024-10-24T10:30:00.000Z"
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "{}", self.chrono_datetime_utc.to_rfc3339_opts(chrono::SecondsFormat::Millis, true))
}
}
impl Nowlike for DatetimeUtc {
fn now() -> Self {
let now = Utc::now();
Self::from_ymd_and_hms(
now.year(),
now.month(),
now.day(),
now.hour(),
now.minute(),
now.second(),
).unwrap()
}
}
impl Dateable for DatetimeUtc {
fn year(&self) -> i32 {
self.chrono_datetime_utc.year()
}
fn month(&self) -> u32 {
self.chrono_datetime_utc.month()
}
fn day(&self) -> u32 {
self.chrono_datetime_utc.day()
}
}
impl Timeable for DatetimeUtc {
fn hour(&self) -> u32 {
self.chrono_datetime_utc.hour()
}
fn minute(&self) -> u32 {
self.chrono_datetime_utc.minute()
}
fn second(&self) -> u32 {
self.chrono_datetime_utc.second()
}
}
impl ToSql<Text, Sqlite> for DatetimeUtc {
fn to_sql<'b>(
&'b self,
out: &mut diesel::serialize::Output<'b, '_, Sqlite>,
) -> serialize::Result {
out.set_value::<String>(self.to_string());
Ok(serialize::IsNull::No)
}
}
impl FromSql<Text, Sqlite> for DatetimeUtc {
fn from_sql(bytes: <Sqlite as Backend>::RawValue<'_>) -> deserialize::Result<DatetimeUtc> {
let str = <String as FromSql<Text, Sqlite>>::from_sql(bytes)?;
Ok(str.parse()?)
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn when_from_ymd_and_hms_then_ymd_and_hms_are_as_expected() {
let datetime_utc = DatetimeUtc::from_ymd_and_hms(1970, 11, 23, 12, 55, 16);
assert!(datetime_utc.is_ok());
let date_utc = datetime_utc.unwrap();
assert_eq!(date_utc.year(), 1970);
assert_eq!(date_utc.month(), 11);
assert_eq!(date_utc.day(), 23);
assert_eq!(date_utc.hour(), 12);
assert_eq!(date_utc.minute(), 55);
assert_eq!(date_utc.second(), 16);
}
#[test]
fn when_from_ymd_and_hms_then_to_string_as_expected() {
let date_utc = DatetimeUtc::from_ymd_and_hms(1970, 11, 23, 12, 55, 16);
assert!(date_utc.is_ok());
assert_eq!(date_utc.unwrap().to_string(), "1970-11-23T12:55:16.000Z")
}
#[test]
fn when_with_invalid_ymd_and_hms_then_err() {
let datetime_utc_1 = DatetimeUtc::from_ymd_and_hms(1970, 0, 23, 12, 55, 16);
let datetime_utc_2 = DatetimeUtc::from_ymd_and_hms(1970, 13, 23, 12, 55, 16);
let datetime_utc_3 = DatetimeUtc::from_ymd_and_hms(1970, 11, 0, 12, 55, 16);
let datetime_utc_4 = DatetimeUtc::from_ymd_and_hms(1970, 11, 31, 12, 55, 16);
let datetime_utc_5 = DatetimeUtc::from_ymd_and_hms(1971, 2, 29, 12, 55, 16);
let datetime_utc_6 = DatetimeUtc::from_ymd_and_hms(1970, 11, 23, 25, 0, 0);
let datetime_utc_7 = DatetimeUtc::from_ymd_and_hms(1970, 11, 23, 0, 61, 0);
let datetime_utc_8 = DatetimeUtc::from_ymd_and_hms(1970, 11, 23, 0, 0, 61);
assert!(datetime_utc_1.is_err());
assert_eq!(datetime_utc_1.unwrap_err().to_string(), "failed to construct datetime from ymd 1970-00-23");
assert!(datetime_utc_2.is_err());
assert_eq!(datetime_utc_2.unwrap_err().to_string(), "failed to construct datetime from ymd 1970-13-23");
assert!(datetime_utc_3.is_err());
assert_eq!(datetime_utc_3.unwrap_err().to_string(), "failed to construct datetime from ymd 1970-11-00");
assert!(datetime_utc_4.is_err());
assert_eq!(datetime_utc_4.unwrap_err().to_string(), "failed to construct datetime from ymd 1970-11-31");
assert!(datetime_utc_5.is_err());
assert_eq!(datetime_utc_5.unwrap_err().to_string(), "failed to construct datetime from ymd 1971-02-29");
assert!(datetime_utc_6.is_err());
assert_eq!(datetime_utc_6.unwrap_err().to_string(), "failed to construct datetime from hms 25:00:00");
assert!(datetime_utc_7.is_err());
assert_eq!(datetime_utc_7.unwrap_err().to_string(), "failed to construct datetime from hms 00:61:00");
assert!(datetime_utc_8.is_err());
assert_eq!(datetime_utc_8.unwrap_err().to_string(), "failed to construct datetime from hms 00:00:61");
}
#[test]
fn when_from_string_then_ymd_and_hms_are_as_expected() {
let date_utc: Result<DatetimeUtc> = "1970-11-23T12:55:16.000Z".parse();
assert!(date_utc.is_ok());
let datetime_utc = date_utc.unwrap();
assert_eq!(datetime_utc.year(), 1970);
assert_eq!(datetime_utc.month(), 11);
assert_eq!(datetime_utc.day(), 23);
assert_eq!(datetime_utc.hour(), 12);
assert_eq!(datetime_utc.minute(), 55);
assert_eq!(datetime_utc.second(), 16);
}
#[test]
fn when_from_string_then_to_string_as_expected() {
let datetime_utc: Result<DatetimeUtc> = "1970-11-23T12:55:16.000Z".parse();
assert!(datetime_utc.is_ok());
assert_eq!(datetime_utc.unwrap().to_string(), "1970-11-23T12:55:16.000Z")
}
#[test]
fn when_from_invalid_string_then_err() {
let datetime_utc_1: Result<DatetimeUtc> = "1970-00-23T00:00:00.000Z".parse();
let datetime_utc_2: Result<DatetimeUtc> = "1970-13-23T00:00:00.000Z".parse();
let datetime_utc_3: Result<DatetimeUtc> = "1970-11-0T00:00:00.000Z".parse();
let datetime_utc_4: Result<DatetimeUtc> = "1970-11-31T00:00:00.000Z".parse();
let datetime_utc_5: Result<DatetimeUtc> = "1971-02-29T00:00:00.000Z".parse();
let datetime_utc_6: Result<DatetimeUtc> = "1970-11-23T25:00:00.000Z".parse();
let datetime_utc_7: Result<DatetimeUtc> = "1970-11-23T00:61:00.000Z".parse();
let datetime_utc_8: Result<DatetimeUtc> = "1970-11-23T00:00:61.000Z".parse();
assert!(datetime_utc_1.is_err());
assert!(datetime_utc_2.is_err());
assert!(datetime_utc_3.is_err());
assert!(datetime_utc_4.is_err());
assert!(datetime_utc_5.is_err());
assert!(datetime_utc_6.is_err());
assert!(datetime_utc_7.is_err());
assert!(datetime_utc_8.is_err());
}
}
|
