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use crate::{
date::date,
time::time,
timezone::{timezone, Timezone},
};
use chrono::{NaiveDate, NaiveDateTime};
use nom::{
character::complete::char,
combinator::{map, opt},
sequence::{pair, preceded, tuple},
IResult,
};
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
pub enum DateTime {
Date(NaiveDate),
DateTime(NaiveDateTime),
DateTimeTz(NaiveDateTime, Timezone),
}
pub(crate) fn datetime(i: &str) -> IResult<&str, DateTime> {
map(
tuple((date, opt(preceded(char('T'), pair(time, opt(timezone)))))),
|(date, timetz)| match timetz {
Some((time, Some(timezone))) => DateTime::DateTimeTz(date.and_time(time), timezone),
Some((time, None)) => DateTime::DateTime(date.and_time(time)),
None => DateTime::Date(date),
},
)(i)
}
#[test]
fn it_should_parse_valid_datetimes() {
assert_eq!(
datetime("2016-12-31"),
Ok(("", DateTime::Date(NaiveDate::from_ymd(2016, 12, 31))))
);
assert_eq!(
datetime("2016-12-31T13:01:01"),
Ok((
"",
DateTime::DateTime(NaiveDate::from_ymd(2016, 12, 31).and_hms(13, 1, 1))
))
);
assert_eq!(
datetime("2016-12-31T13:01:01.123456789"),
Ok((
"",
DateTime::DateTime(NaiveDate::from_ymd(2016, 12, 31).and_hms_nano(13, 1, 1, 123456789))
))
);
assert_eq!(
datetime("2016-12-31T13:01:01Z"),
Ok((
"",
DateTime::DateTimeTz(
NaiveDate::from_ymd(2016, 12, 31).and_hms(13, 1, 1),
Timezone::Utc
)
))
);
assert_eq!(
datetime("2016-12-31T13:01:01+02:00"),
Ok((
"",
DateTime::DateTimeTz(
NaiveDate::from_ymd(2016, 12, 31).and_hms(13, 1, 1),
Timezone::FixedOffset(120)
)
))
);
assert_eq!(
datetime("2016-12-31T13:01:01.123456789+02:00"),
Ok((
"",
DateTime::DateTimeTz(
NaiveDate::from_ymd(2016, 12, 31).and_hms_nano(13, 1, 1, 123456789),
Timezone::FixedOffset(120)
)
))
);
}