controller/emgauwa-controller/src/relay_loop.rs

118 lines
3.1 KiB
Rust

use std::time::Duration;
use actix::Addr;
use chrono::{Local, Timelike};
use emgauwa_lib::constants::RELAYS_RETRY_TIMEOUT;
use emgauwa_lib::errors::EmgauwaError;
use emgauwa_lib::models::Controller;
use emgauwa_lib::types::{RelayStates, Weekday};
use emgauwa_lib::utils::printable_relay_states;
use futures::pin_mut;
use tokio::time;
use tokio::time::timeout;
use utils::app_state_get_controller_notifier;
use crate::app_state::AppState;
use crate::utils;
pub async fn run_relays_loop(app_state: Addr<AppState>) {
log::debug!("Spawned relays loop");
loop {
let run_result = run_relays(&app_state).await;
if let Err(err) = run_result {
log::error!("Error running relays: {}", err);
}
time::sleep(RELAYS_RETRY_TIMEOUT).await;
}
}
async fn run_relays(app_state: &Addr<AppState>) -> Result<(), EmgauwaError> {
let notifier = &*app_state_get_controller_notifier(app_state).await?;
let mut last_weekday = emgauwa_lib::utils::get_weekday();
let mut this = utils::app_state_get_this(app_state).await?;
let mut relay_states: RelayStates = Vec::new();
init_relay_states(&mut relay_states, &this);
calc_relay_states(&mut relay_states, &mut this, app_state).await?;
loop {
log::debug!(
"Relay loop at {}: {}",
Local::now().naive_local().time(),
printable_relay_states(&this.get_relay_states())
);
let notifier_future = notifier.notified();
pin_mut!(notifier_future);
let mut changed = timeout(get_next_duration(&this), &mut notifier_future)
.await
.is_ok();
check_weekday(app_state, &mut last_weekday, &mut changed).await?;
if changed {
log::debug!("Reloading controller in relay loop");
this = utils::app_state_get_this(app_state).await?;
}
calc_relay_states(&mut relay_states, &mut this, app_state).await?;
}
}
fn init_relay_states(relay_states: &mut RelayStates, this: &Controller) {
relay_states.clear();
for _ in 0..this.c.relay_count {
relay_states.push(None);
}
}
async fn calc_relay_states(
relay_states: &mut RelayStates,
this: &mut Controller,
app_state: &Addr<AppState>,
) -> Result<(), EmgauwaError> {
let now = Local::now().time();
this.relays
.iter_mut()
.zip(relay_states.iter_mut())
.for_each(|(relay, state)| {
relay.is_on = Some(relay.active_schedule.is_on(&now));
*state = relay.is_on;
});
utils::app_state_update_relays_on(app_state, relay_states.clone()).await
}
fn get_next_duration(this: &Controller) -> Duration {
let now = Local::now().time();
let now_in_s = now.num_seconds_from_midnight();
let next_timestamp = this
.get_next_time(&now)
.map_or(86400, |t| t.num_seconds_from_midnight());
let duration_to_next = Duration::from_secs((next_timestamp - now_in_s) as u64);
log::debug!(
"Next timestamp: {}; Waiting for {}s",
next_timestamp,
duration_to_next.as_secs()
);
duration_to_next
}
async fn check_weekday(
app_state: &Addr<AppState>,
last_weekday: &mut Weekday,
changed: &mut bool,
) -> Result<(), EmgauwaError> {
let current_weekday = emgauwa_lib::utils::get_weekday();
if current_weekday.ne(last_weekday) {
log::debug!("Weekday changed");
*last_weekday = current_weekday;
utils::app_state_reload(app_state).await?;
*changed = true;
}
Ok(())
}