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use std::cmp::{Ordering, Ord};
use std::fmt;
use std::str::FromStr;
use chrono::Duration;
use date::Date;
use errors::EventError;
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Event {
pub start: Date,
pub end: End,
pub summary: String,
pub location: String,
pub description: String,
pub status: Status,
}
#[derive(Debug, Copy, Clone, PartialEq, PartialOrd, Eq)]
pub enum Status {
Confirmed,
Tentative,
Canceled,
}
#[derive(Debug, Copy, Clone, PartialEq, PartialOrd, Eq)]
pub enum End {
Date(Date),
Duration(Duration),
}
impl Event {
pub fn new() -> Event {
return Event {
summary: "".to_string(),
location: "".to_string(),
description: "".to_string(),
status: Status::Confirmed,
start: Date::new(),
end: End::Date(Date::new()),
};
}
pub fn end_date(&self) -> Date {
match self.end {
End::Date(date) => date,
End::Duration(duration) => self.start + duration,
}
}
}
impl fmt::Display for Event {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"{:?}-{:?}: {}",
self.start,
self.end_date(),
self.summary
)?;
if !self.location.is_empty() {
write!(f, " ({})", self.location)?;
}
if !self.description.is_empty() {
write!(f, "\n\t{}", self.description)?;
}
Ok(())
}
}
impl Ord for Event {
fn cmp(&self, other: &Self) -> Ordering {
let ord = self.start.cmp(&other.start);
if ord == Ordering::Equal {
self.end_date().cmp(&other.end_date())
} else {
ord
}
}
}
impl PartialOrd for Event {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl FromStr for Status {
type Err = EventError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"CONFIRMED" => Ok(Status::Confirmed),
"TENTATIVE" => Ok(Status::Tentative),
"CANCELED" => Ok(Status::Canceled),
_ => Err(EventError::StatusError),
}
}
}
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