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use std::path::Path;
// use std::str::FromStr;
// use chrono::{Datelike, NaiveDate, NaiveTime, Weekday, Duration, Timelike};
use chrono::{Datelike, NaiveDate, Duration};
pub struct WTDPath<'a> {
pub path: &'a Path,
pub week_start: Option<NaiveDate>,
pub is_weekly_file: bool,
}
// both start, end are inclusive.
pub fn relevant_files<'a>(start: &'a NaiveDate, end: &'a NaiveDate) -> Vec<WTDPath<'a>> {
let mut paths: Vec<WTDPath> = vec![];
if let Some(path) = maybe_path("wtd.md".to_string()) {
paths.push(WTDPath {
path: &path,
week_start: None,
is_weekly_file: false,
});
}
let weekly = maybe_path("weekly.md".to_string());
let start_week = week_start_of(start);
let end_week = week_start_of(end); // inclusive
let mut curr_week = start_week;
while curr_week <= end_week {
let maybe_week_path = week_file(curr_week);
let path = match [maybe_week_path, weekly] {
[Some(path), _] => path,
[_, Some(path)] => path,
[None, None] => continue,
};
paths.push(WTDPath {
path: path,
week_start: Some(curr_week),
is_weekly_file: maybe_week_path.is_none(),
});
curr_week = curr_week + Duration::weeks(1);
}
return paths;
}
fn week_file(week_start: NaiveDate) -> Option<&'static Path> {
let filename = week_start.format("%b_%d_%Y.md").to_string().to_lowercase();
return maybe_path(filename);
}
fn maybe_path(name: String) -> Option<&'static Path> {
let path = Path::new("wtd.md");
return if path.exists() { Some(&path) } else { None };
}
fn week_start_of(date: &NaiveDate) -> NaiveDate {
let days_from_monday = date.weekday().number_from_monday();
return *date - Duration::days(days_from_monday.into());
}
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