tracc/src/timesheet.rs

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3.6 KiB
Rust
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use super::listview::ListView;
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use itertools::Itertools;
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use serde::{Deserialize, Serialize};
use serde_json::from_reader;
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use std::{collections, default, fmt, fs, io, iter};
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use time::{Duration, OffsetDateTime, Time};
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pub struct TimeSheet {
pub times: Vec<TimePoint>,
pub selected: usize,
pub register: Option<TimePoint>,
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pub editing_time: bool,
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}
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const PAUSE_TEXTS: [&str; 3] = ["lunch", "mittag", "pause"];
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#[derive(Serialize, Deserialize, Clone, Debug)]
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pub struct TimePoint {
text: String,
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time: Time,
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}
impl TimePoint {
pub fn new(text: &str) -> Self {
Self {
text: String::from(text),
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time: OffsetDateTime::now_local().time(),
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}
}
}
impl fmt::Display for TimePoint {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "[{}] {}", self.time.format("%H:%M"), self.text)
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}
}
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impl default::Default for TimePoint {
fn default() -> Self {
TimePoint::new("")
}
}
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fn read_times(path: &str) -> Option<Vec<TimePoint>> {
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fs::File::open(path)
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.ok()
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.map(io::BufReader::new)
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.and_then(|r| from_reader(r).ok())
}
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impl TimeSheet {
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pub fn open_or_create(path: &str) -> Self {
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Self {
times: read_times(path).unwrap_or_else(|| vec![TimePoint::new("start")]),
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selected: 0,
register: None,
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editing_time: false,
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}
}
pub fn printable(&self) -> Vec<String> {
self.times.iter().map(TimePoint::to_string).collect()
}
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fn current(&self) -> &TimePoint {
&self.times[self.selected]
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}
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fn grouped_times(&self) -> impl Iterator<Item = (String, Duration)> {
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self.times
.iter()
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.chain(iter::once(&TimePoint::new("end")))
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.tuple_windows()
.map(|(prev, next)| (prev.text.clone(), next.time - prev.time))
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// Fold into a map to group by description.
// I use a BTreeMap because I need a stable output order for the iterator
// (otherwise the summary list will jump around on every input).
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.fold(collections::BTreeMap::new(), |mut map, (text, duration)| {
*map.entry(text).or_insert_with(Duration::zero) += duration;
map
})
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.into_iter()
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.filter(|(text, _)| !PAUSE_TEXTS.contains(&text.as_str()))
}
pub fn time_by_tasks(&self) -> String {
self.grouped_times()
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.map(|(text, duration)| format!("{}: {}", text, format_duration(&duration)))
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.join(" | ")
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}
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pub fn sum_as_str(&self) -> String {
let total = self
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.grouped_times()
.fold(Duration::zero(), |total, (_, d)| total + d);
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format_duration(&total)
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}
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}
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fn format_duration(d: &Duration) -> String {
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format!("{}:{:02}", d.whole_hours(), d.whole_minutes().max(1) % 60)
}
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impl ListView<TimePoint> for TimeSheet {
fn selection_pointer(&mut self) -> &mut usize {
&mut self.selected
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}
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fn list(&mut self) -> &mut Vec<TimePoint> {
&mut self.times
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}
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fn register(&mut self) -> &mut Option<TimePoint> {
&mut self.register
}
fn normal_mode(&mut self) {
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if self.current().text.is_empty() {
self.remove_current();
self.selected = self.selected.saturating_sub(1);
}
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self.times.sort_by_key(|t| t.time);
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}
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fn toggle_current(&mut self) {
self.editing_time = !self.editing_time;
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}
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fn append_to_current(&mut self, chr: char) {
self.times[self.selected].text.push(chr);
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}
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fn backspace(&mut self) {
self.times[self.selected].text.pop();
}
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}