244 lines
8.6 KiB
Rust
244 lines
8.6 KiB
Rust
use std::collections::HashMap;
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use chrono::{DateTime, Datelike, Local, NaiveTime, Weekday};
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use common::{ClientMessage, ServerMessage};
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use lighter_lib::{BulbColor, BulbId};
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use lighter_manager::manager::{BulbCommand, BulbManager, BulbSelector};
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use serde::{Deserialize, Serialize};
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use std::time::Duration;
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use tokio::select;
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use tokio::sync::{broadcast, mpsc};
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use tokio::task::{spawn, JoinHandle};
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use tokio::time::sleep;
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use crate::persistence::PersistenceFile;
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use crate::{ClientRequest, State};
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#[derive(Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
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struct LightsState {
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wake_schedule: HashMap<BulbId, HashMap<Weekday, NaiveTime>>,
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}
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pub async fn lights_task(state: &State) {
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let config = &state.config;
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let server_message = &state.server_message;
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let mut client_message = state.client_message.subscribe();
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let mut lights_state: PersistenceFile<LightsState> = state
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.persistence
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.open("lights".into())
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.await
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.expect("Failed to open lights config");
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let (cmd, bulb_states) = BulbManager::launch(config.bulbs.clone(), config.mqtt.clone())
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.await
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.expect("Failed to launch bulb manager");
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let mut wake_tasks: HashMap<(BulbId, Weekday), JoinHandle<()>> = lights_state
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.get()
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.wake_schedule
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.iter()
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.flat_map(|(bulb, schedule)| schedule.iter().map(move |(day, time)| (bulb, day, time)))
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.map(|(bulb, day, time)| {
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let handle = spawn(wake_task(
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state.client_message.clone(),
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cmd.clone(),
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bulb.clone(),
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*day,
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*time,
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));
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((bulb.clone(), *day), handle)
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})
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.collect();
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loop {
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let notify = bulb_states.notify_on_change();
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select! {
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_ = notify => {
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let lights_state = lights_state.get();
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for (id, mode) in bulb_states.bulbs().await.clone().into_iter() {
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let wake_schedule = lights_state.wake_schedule.get(&id).cloned().unwrap_or_default();
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let msg = ServerMessage::BulbState { id, mode, wake_schedule };
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if let Err(e) = server_message.send(msg) {
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error!("broadcast channel error: {e}");
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return;
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}
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}
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}
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request = client_message.recv() => {
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let request = match request {
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Ok(r) => r,
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Err(_) => continue,
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};
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match request.message {
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ClientMessage::SetBulbColor { id, color } => {
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if let Err(e) = cmd.send(BulbCommand::SetColor(BulbSelector::Id(id), color)).await {
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error!("bulb manager error: {e}");
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}
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}
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ClientMessage::SetBulbPower { id, power } => {
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if let Err(e) = cmd.send(BulbCommand::SetPower(BulbSelector::Id(id), power)).await {
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error!("bulb manager error: {e}");
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}
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}
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ClientMessage::GetBulbs => {
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if let Err(e) = request.response.send(ServerMessage::BulbMap(config.bulb_map.clone())).await {
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error!("GetBulbs response channel error: {e}");
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return;
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}
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let lights_state = lights_state.get();
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for (id, mode) in bulb_states.bulbs().await.clone().into_iter() {
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let wake_schedule = lights_state.wake_schedule.get(&id).cloned().unwrap_or_default();
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let msg = ServerMessage::BulbState { id, mode, wake_schedule };
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if let Err(e) = request.response.send(msg).await {
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error!("GetBulbs response channel error: {e}");
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return;
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}
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}
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}
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ClientMessage::SetBulbWakeTime { id, day, time } => {
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if let Err(e) = lights_state.update(|lights_state| {
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let schedule = lights_state.wake_schedule.entry(id.clone()).or_default();
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if let Some(time) = time {
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schedule.insert(day, time);
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}
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else {
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schedule.remove(&day);
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}
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}).await {
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error!("Failed to save wake schedule: {e}");
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};
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if let Some(time) = time {
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let handle = spawn(wake_task(
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state.client_message.clone(),
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cmd.clone(),
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id.clone(),
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day,
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time,
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));
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if let Some(old_handle) = wake_tasks.insert((id, day), handle) {
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old_handle.abort();
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}
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} else if let Some(old_handle) = wake_tasks.remove(&(id, day)) {
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old_handle.abort();
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}
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}
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_ => {}
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}
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}
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}
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}
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}
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async fn wake_task(
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client_messages: broadcast::Sender<ClientRequest>,
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cmd: mpsc::Sender<BulbCommand>,
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id: BulbId,
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day: Weekday,
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time: NaiveTime,
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) {
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let mut alarm = next_alarm(Local::now(), day, time);
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loop {
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info!("sleeping until {alarm}");
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sleep((alarm - Local::now()).to_std().unwrap()).await;
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// slowly turn up brightness of bulb
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for brightness in (1..=75).map(|i| (i as f32) * 0.01) {
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select! {
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// abort if the client pokes the bulb
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_ = wait_for_bulb_command(&id, client_messages.subscribe()) => break,
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_ = sleep(Duration::from_secs(12)) => {}
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};
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if cmd
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.send(BulbCommand::SetColor(
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BulbSelector::Id(id.clone()),
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BulbColor::Kelvin {
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t: 0.0,
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b: brightness,
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},
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))
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.await
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.is_err()
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{
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return;
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};
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}
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alarm = next_alarm(Local::now(), day, time);
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}
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}
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/// Get the next alarm, from a weekday+time schedule.
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fn next_alarm(now: DateTime<Local>, day: Weekday, time: NaiveTime) -> DateTime<Local> {
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let day_of_alarm = day.num_days_from_monday() as i64;
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let day_now = now.weekday().num_days_from_monday() as i64;
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let alarm = now + chrono::Duration::days(day_of_alarm - day_now);
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let mut alarm = alarm
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.date_naive()
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.and_time(time)
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.and_local_timezone(Local)
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.unwrap();
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if alarm <= now {
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alarm += chrono::Duration::weeks(1);
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}
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alarm
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}
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/// Wait until we receive a client request that mutates the given bulb
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async fn wait_for_bulb_command(
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bulb_id: &BulbId,
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mut client_messages: broadcast::Receiver<ClientRequest>,
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) {
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loop {
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match client_messages.recv().await {
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Err(_) => return,
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Ok(request) => match request.message {
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ClientMessage::SetBulbColor { id, .. }
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| ClientMessage::SetBulbPower { id, .. }
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| ClientMessage::SetBulbWakeTime { id, .. }
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if &id == bulb_id =>
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{
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break
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}
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_ => continue,
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},
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}
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}
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}
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#[cfg(test)]
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mod test {
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use chrono::{offset::TimeZone, Local, NaiveTime, Weekday};
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use super::next_alarm;
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#[test]
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fn test_alarm_date() {
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const FMT: &str = "%Y-%m-%d %H:%M";
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let now = Local.datetime_from_str("2022-10-18 15:30", FMT).unwrap();
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let test_values = [
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(Weekday::Tue, (16, 30), "2022-10-18 16:30"),
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(Weekday::Tue, (14, 30), "2022-10-25 14:30"),
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(Weekday::Wed, (15, 30), "2022-10-19 15:30"),
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(Weekday::Mon, (15, 30), "2022-10-24 15:30"),
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];
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for (day, (hour, min), expected) in test_values {
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let expected = Local.datetime_from_str(expected, FMT).unwrap();
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assert_eq!(
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next_alarm(now, day, NaiveTime::from_hms(hour, min, 0)),
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expected
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);
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}
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}
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}
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