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|
use async_channel::{Receiver, Sender};
use chrono::{Duration, NaiveDate};
use std::collections::HashSet;
use std::iter::FromIterator;
use uuid::Uuid;
use crate::{
db,
gui::{calendar, form, utils, App},
model::{event, event::Event},
};
pub fn send(tx: Sender<Msg>, msg: Msg) {
utils::spawn(async move {
let _ = tx.send(msg).await;
})
}
pub enum Msg {
ShowAddForm {
date: NaiveDate,
},
ShowRepetitionDialog {
event_id: Uuid,
date: NaiveDate,
},
ShowUpdateForm {
event_id: Uuid,
},
ShowUpdateRepetitionForm {
event_id: Uuid,
date: NaiveDate,
},
ShowUpdateFromOccurence {
event_id: Uuid,
date: NaiveDate,
},
AddEvent {
new: Event,
},
UpdateEvent {
old: Event,
new: Event,
},
UpdateEventOccurence {
event: Event,
occurence: usize,
date: NaiveDate,
new: Event,
},
UpdateRepeatedFrom {
old: Event,
updated: Event,
new: Event,
},
DeleteEvent {
event: Event,
},
DeleteOccurence {
event: Event,
date: NaiveDate,
occurence: usize,
},
SelectPreviousWeek,
SelectNextWeek,
}
pub async fn event_handler(rx: Receiver<Msg>, mut app: App) {
while let Ok(msg) = rx.recv().await {
match msg {
Msg::ShowAddForm { date } => form::show(&app, form::Target::New { date }).await,
Msg::ShowRepetitionDialog { date, event_id } => {
match app.recurring_events.iter().position(|e| e.id == event_id) {
Some(index) => {
form::repetition_dialog(&app, date, &app.recurring_events[index]).await
}
None => eprintln!("Event not found with id: {}", event_id),
}
}
Msg::ShowUpdateForm { event_id } => {
match app.recurring_events.iter().position(|e| e.id == event_id) {
Some(index) => {
form::show(
&app,
form::Target::Update {
event: app.recurring_events[index].clone(),
},
)
.await
}
None => match app.events.iter().position(|e| e.id == event_id) {
Some(index) => {
form::show(
&app,
form::Target::Update {
event: app.events[index].clone(),
},
)
.await
}
None => eprintln!("Event not found with id: {}", event_id),
},
}
}
Msg::ShowUpdateRepetitionForm { event_id, date } => {
match app.recurring_events.iter().position(|e| e.id == event_id) {
Some(index) => {
form::show(
&app,
form::Target::UpdateRepetition {
date,
event: app.recurring_events[index].clone(),
},
)
.await
}
None => eprintln!("Event not found with id: {}", event_id),
}
}
Msg::ShowUpdateFromOccurence { event_id, date } => {
match app.recurring_events.iter().position(|e| e.id == event_id) {
Some(index) => {
let event = app.recurring_events[index].clone();
form::show(&app, form::Target::UpdateFromOccurence { date, event }).await
}
None => eprintln!("Event not found with id: {}", event_id),
}
}
Msg::AddEvent { new } => {
let refresh_dates = add(&mut app, &new);
refresh(&app, &refresh_dates)
}
Msg::UpdateEvent { old, new } => {
let mut refresh_dates = remove(&mut app, &old);
refresh_dates.extend(add(&mut app, &new));
refresh(&app, &refresh_dates);
}
Msg::UpdateEventOccurence {
event,
occurence,
date,
new,
} => {
remove_occurence(&mut app, &event, occurence);
let mut refresh_dates = add(&mut app, &new);
refresh_dates.insert(date);
refresh(&app, &refresh_dates)
}
Msg::UpdateRepeatedFrom { old, updated, new } => {
let mut refresh_dates = remove(&mut app, &old);
refresh_dates.extend(add(&mut app, &updated));
refresh_dates.extend(add(&mut app, &new));
refresh(&app, &refresh_dates);
}
Msg::DeleteEvent { event } => {
let refresh_dates = remove(&mut app, &event);
refresh(&app, &refresh_dates)
}
Msg::DeleteOccurence {
event,
date,
occurence,
} => {
remove_occurence(&mut app, &event, occurence);
refresh(&app, &HashSet::from([date]))
}
Msg::SelectPreviousWeek => {
app.start_date -= Duration::days(7);
app.end_date -= Duration::days(7);
match db::events::list_non_recurring_between(
&app.conn,
app.start_date,
app.end_date,
) {
Ok(events) => app.events = events,
Err(err) => eprintln!("{}", err),
};
refresh(&app, &HashSet::from_iter(visible_dates(&app)));
}
Msg::SelectNextWeek => {
app.start_date += Duration::days(7);
app.end_date += Duration::days(7);
match db::events::list_non_recurring_between(
&app.conn,
app.start_date,
app.end_date,
) {
Ok(events) => app.events = events,
Err(err) => eprintln!("{}", err),
};
refresh(&app, &HashSet::from_iter(visible_dates(&app)));
}
}
}
}
/// Remove event and return dates that should be refreshed.
fn remove(app: &mut App, event: &Event) -> HashSet<NaiveDate> {
if event.repetition.is_some() {
match app.recurring_events.iter().position(|e| e.id == event.id) {
Some(index) => {
app.recurring_events.remove(index);
repetition_dates(app, event)
}
None => {
eprintln!("Event not found when trying to delete {:?}", event);
HashSet::new()
}
}
} else {
match app.events.iter().position(|e| e.id == event.id) {
Some(index) => {
app.events.remove(index);
HashSet::from([event.date])
}
None => {
eprintln!("Event not found when trying to delete {:?}", event);
HashSet::new()
}
}
}
}
/// Remove event repetition
/// TODO: Completely remove the event if it’s the last remaining occurence
fn remove_occurence(app: &mut App, event: &Event, occurence: usize) {
match app.recurring_events.iter().position(|e| e.id == event.id) {
Some(index) => {
let event = app.recurring_events.get_mut(index).unwrap();
match event.repetition.clone() {
Some(mut repetition) => {
repetition.removed_occurences.insert(occurence);
event.repetition = Some(repetition.clone())
}
None => eprintln!(
"Repetition not found when trying to delete repetition of {:?}",
event
),
}
}
None => {
eprintln!(
"Event not found when trying to delete repetition of {:?}",
event
)
}
}
}
/// Add event and return dates that should be refreshed.
fn add(app: &mut App, event: &Event) -> HashSet<NaiveDate> {
if event.repetition.is_some() {
app.recurring_events.push(event.clone());
let mut dates = repetition_dates(app, event);
dates.insert(event.date);
dates
} else {
app.events.push(event.clone());
HashSet::from([event.date])
}
}
/// Repetition dates of a repetead event.
fn repetition_dates(app: &App, event: &Event) -> HashSet<NaiveDate> {
let event_reps = event::repetitions_between(&[event.clone()], app.start_date, app.end_date);
HashSet::from_iter(event_reps.keys().copied())
}
/// Refresh app for the given dates.
fn refresh(app: &App, dates: &HashSet<NaiveDate>) {
let repetitions =
event::repetitions_between(&app.recurring_events, app.start_date, app.end_date);
for date in dates {
if date >= &app.start_date && date <= &app.end_date {
calendar::refresh_date(
app,
*date,
&repetitions,
&app.categories,
&app.default_color,
)
}
}
}
/// List visible dates in calendar.
fn visible_dates(app: &App) -> Vec<NaiveDate> {
let mut date = app.start_date;
let mut res = vec![date];
while date <= app.end_date {
date += Duration::days(1);
res.push(date);
}
res
}
|
