openlibspot_core/
date.rs

1use std::{convert::TryFrom, fmt::Debug, ops::Deref};
2
3use time::{
4    error::ComponentRange, format_description::well_known::Iso8601, Date as _Date, OffsetDateTime,
5    PrimitiveDateTime, Time,
6};
7
8use crate::Error;
9
10use openlibspot_protocol as protocol;
11use protocol::metadata::Date as DateMessage;
12
13impl From<ComponentRange> for Error {
14    fn from(err: ComponentRange) -> Self {
15        Error::out_of_range(err)
16    }
17}
18
19#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
20pub struct Date(pub OffsetDateTime);
21
22impl Deref for Date {
23    type Target = OffsetDateTime;
24    fn deref(&self) -> &Self::Target {
25        &self.0
26    }
27}
28
29impl Date {
30    pub fn as_timestamp_ms(&self) -> i64 {
31        (self.0.unix_timestamp_nanos() / 1_000_000) as i64
32    }
33
34    pub fn from_timestamp_ms(timestamp: i64) -> Result<Self, Error> {
35        let date_time = OffsetDateTime::from_unix_timestamp_nanos(timestamp as i128 * 1_000_000)?;
36        Ok(Self(date_time))
37    }
38
39    pub fn as_utc(&self) -> OffsetDateTime {
40        self.0
41    }
42
43    pub fn from_utc(date_time: PrimitiveDateTime) -> Self {
44        Self(date_time.assume_utc())
45    }
46
47    pub fn now_utc() -> Self {
48        Self(OffsetDateTime::now_utc())
49    }
50
51    pub fn from_iso8601(input: &str) -> Result<Self, Error> {
52        let date_time = OffsetDateTime::parse(input, &Iso8601::DEFAULT)?;
53        Ok(Self(date_time))
54    }
55}
56
57impl TryFrom<&DateMessage> for Date {
58    type Error = crate::Error;
59    fn try_from(msg: &DateMessage) -> Result<Self, Self::Error> {
60        // Some metadata contains a year, but no month. In that case just set January.
61        let month = if msg.has_month() {
62            msg.month() as u8
63        } else {
64            1
65        };
66
67        // Having no day will work, but may be unexpected: it will imply the last day
68        // of the month before. So prevent that, and just set day 1.
69        let day = if msg.has_day() { msg.day() as u8 } else { 1 };
70
71        let date = _Date::from_calendar_date(msg.year(), month.try_into()?, day)?;
72        let time = Time::from_hms(msg.hour() as u8, msg.minute() as u8, 0)?;
73        Ok(Self::from_utc(PrimitiveDateTime::new(date, time)))
74    }
75}
76
77impl From<OffsetDateTime> for Date {
78    fn from(datetime: OffsetDateTime) -> Self {
79        Self(datetime)
80    }
81}
openlibspot_core/date.rs

openlibspot_core/
date.rs
