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use chrono::{DateTime, SecondsFormat, Utc}; use std::error::Error; use std::fmt; use std::str::FromStr; #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)] pub struct Entry { pub start: DateTime<Utc>, pub stop: DateTime<Utc>, pub account: String, pub description: Option<String>, } impl Entry { pub fn format_as_timeclock(&self) -> String { let datetime_format = "%Y-%m-%d %H:%M:%S%z"; format!( "i {} {}\no {}", self.start.format(datetime_format), self.account, self.stop.format(datetime_format) ) } } impl fmt::Display for Entry { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!( f, "{} {} {}", self.start.to_rfc3339_opts(SecondsFormat::Secs, true), self.stop.to_rfc3339_opts(SecondsFormat::Secs, true), self.account ) } } impl FromStr for Entry { type Err = ParseError; fn from_str(s: &str) -> Result<Self, Self::Err> { let (start, remainder) = s.split_once(' ').ok_or(ParseError::MissingStart)?; let (stop, account) = remainder.split_once(' ').ok_or(ParseError::MissingStop)?; Ok(Entry { start: DateTime::from_str(start)?, stop: DateTime::from_str(stop)?, account: account.to_string(), description: None, }) } } #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)] pub struct RunningEntry { pub start: DateTime<Utc>, pub account: String, pub description: Option<String>, } impl fmt::Display for RunningEntry { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!( f, "{} {}", self.start.to_rfc3339_opts(SecondsFormat::Secs, true), self.account ) } } impl FromStr for RunningEntry { type Err = ParseError; fn from_str(s: &str) -> Result<Self, Self::Err> { let (start, account) = s.split_once(' ').ok_or(ParseError::MissingStart)?; Ok(RunningEntry { start: DateTime::from_str(start)?, account: account.to_string(), description: None, }) } } #[derive(Debug, Clone, PartialEq, Eq)] pub enum ParseError { MissingStart, MissingStop, DateParseError(chrono::ParseError), } impl From<chrono::ParseError> for ParseError { fn from(err: chrono::ParseError) -> Self { ParseError::DateParseError(err) } } impl fmt::Display for ParseError { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { ParseError::MissingStart => write!(f, "missing start date"), ParseError::MissingStop => write!(f, "missing stop date"), ParseError::DateParseError(err) => err.fmt(f), } } } impl Error for ParseError {} #[cfg(test)] mod tests { use super::*; #[test] fn format_entry_as_timeclock() { let timeclock = Entry { start: DateTime::from_str("2021-07-03T10:00:00Z").unwrap(), stop: DateTime::from_str("2021-07-03T13:00:00Z").unwrap(), account: "Time Tracker".to_string(), description: None, } .format_as_timeclock(); assert_eq!( timeclock, "i 2021-07-03 10:00:00+0000 Time Tracker\no 2021-07-03 13:00:00+0000" ); } #[test] fn display_entry() { let entry = Entry { start: DateTime::from_str("2021-07-03T10:00:00Z").unwrap(), stop: DateTime::from_str("2021-07-03T13:00:00Z").unwrap(), account: "Time Tracker".to_string(), description: None, }; assert_eq!( format!("{}", entry), "2021-07-03T10:00:00Z 2021-07-03T13:00:00Z Time Tracker" ) } #[test] fn parse_entry() { let entry = Entry::from_str("2021-07-03T10:00:00Z 2021-07-03T13:00:00Z Time Tracker").unwrap(); assert_eq!( entry, Entry { start: DateTime::from_str("2021-07-03T10:00:00Z").unwrap(), stop: DateTime::from_str("2021-07-03T13:00:00Z").unwrap(), account: "Time Tracker".to_string(), description: None, } ); } #[test] fn display_running_entry() { let entry = RunningEntry { start: DateTime::from_str("2021-07-03T10:00:00Z").unwrap(), account: "Time Tracker".to_string(), description: None, }; assert_eq!(format!("{}", entry), "2021-07-03T10:00:00Z Time Tracker"); } #[test] fn parse_running_entry() { let entry = RunningEntry::from_str("2021-07-03T10:00:00Z Time Tracker").unwrap(); assert_eq!( entry, RunningEntry { start: DateTime::from_str("2021-07-03T10:00:00Z").unwrap(), account: "Time Tracker".to_string(), description: None, } ); } }