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use std::{
fmt::{Display, Formatter, Result as FmtResult},
str::FromStr,
};
/// Represents a period of time relative to now.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum Period {
/// The period of time that began at the start of the first tracked event.
All,
/// The period of time that began at midnight at the start of the current day.
Today,
/// The period of time 24 hours in length that ended at midnight at the start of the current
/// day.
Yesterday,
/// The period of time that began at midnight at the start of the last Monday that occurred
/// (including the current day).
Week,
/// The period of time 7 days (168 hours) in length that ended at midnight at the start of the
/// last Monday that occurred.
LastWeek,
/// The period of time that began at midnight at the start of the last day that occurred whose
/// number was 1 (including the current day).
Month,
/// The period of time between the midnights at the beginning of the last two occurrences of
/// days whose numbers were 1 (including the current day).
LastMonth,
}
impl FromStr for Period {
type Err = String;
fn from_str(raw: &str) -> Result<Self, Self::Err> {
match raw {
"all" | "a" => Ok(Period::All),
"today" | "t" => Ok(Period::Today),
"yesterday" | "y" => Ok(Period::Yesterday),
"week" | "this week" | "w" | "tw" => Ok(Period::Week),
"last week" | "lastweek" | "lw" => Ok(Period::LastWeek),
"month" | "this month" | "m" | "tm" => Ok(Period::Month),
"last month" | "lastmonth" | "lm" => Ok(Period::LastMonth),
_ => Err("Time period not recognised.".into()),
}
}
}
impl Display for Period {
fn fmt(&self, f: &mut Formatter) -> FmtResult {
match self {
Period::All => write!(f, "All-Time"),
Period::Today => write!(f, "Today"),
Period::Yesterday => write!(f, "Yesterday"),
Period::Week => write!(f, "This Week"),
Period::LastWeek => write!(f, "Last Week"),
Period::Month => write!(f, "This Month"),
Period::LastMonth => write!(f, "Last Month"),
}
}
}