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atomic::{AtomicBool, Ordering}, + Arc, +}; +use std::time::Duration; +use tokio::{ + io::{AsyncBufReadExt, BufReader}, + net::UnixListener, + sync::Notify, + time::sleep, +}; + +const TEMP_DAY: i32 = 6500; +const TEMP_NIGHT: i32 = 2700; + +const GAMMA_DAY: i32 = 100; +const GAMMA_NIGHT: i32 = 95; + +const SUNSET_START: u32 = 19; +const SUNSET_END: u32 = 22; +const SUNRISE_START: u32 = 4; +const SUNRISE_END: u32 = 7; + +const SOCKET_PATH: &str = "/tmp/hinoirisetr.sock"; + +fn interpolate(start: i32, end: i32, factor: f64) -> i32 { + (start as f64 + (end - start) as f64 * factor).round() as i32 +} + +fn apply_settings(temp: i32, gamma: i32) { + let _ = Command::new("hyprctl") + .args(["hyprsunset", "temperature", &temp.to_string()]) + .output(); + + let _ = Command::new("hyprctl") + .args(["hyprsunset", "gamma", &gamma.to_string()]) + .output(); +} + +async fn socket_server(disabled: Arc, notify: Arc) { + let _ = std::fs::remove_file(SOCKET_PATH); + let listener = UnixListener::bind(SOCKET_PATH).expect("Failed to bind socket"); + + loop { + let (stream, _) = listener.accept().await.unwrap(); + let mut lines = BufReader::new(stream).lines(); + + if let Ok(Some(line)) = lines.next_line().await { + match line.trim() { + "disable" => { + disabled.store(true, Ordering::SeqCst); + notify.notify_one(); + } + "enable" => { + disabled.store(false, Ordering::SeqCst); + notify.notify_one(); + } + "toggle" => { + let now = !disabled.load(Ordering::SeqCst); + disabled.store(now, Ordering::SeqCst); + notify.notify_one(); + } + "status" => { + println!( + "dimming is {}", + if disabled.load(Ordering::SeqCst) { + "disabled" + } else { + "enabled" + } + ); + } + _ => eprintln!("unknown command: {}", line.trim()), + } + } + } +} + +#[tokio::main] +async fn main() { + let disabled = Arc::new(AtomicBool::new(false)); + let notify = Arc::new(Notify::new()); + + // Spawn control socket server + { + let disabled = Arc::clone(&disabled); + let notify = Arc::clone(¬ify); + tokio::spawn(async move { + socket_server(disabled, notify).await; + }); + } + + loop { + if disabled.load(Ordering::SeqCst) { + apply_settings(TEMP_DAY, GAMMA_DAY); + } else { + let now = Local::now(); + let time_in_hours = now.hour() as f64 + now.minute() as f64 / 60.0; + + let (temp, gamma) = if (time_in_hours >= SUNSET_START as f64) + && (time_in_hours <= SUNSET_END as f64) + { + // sunset transition + let factor = ((time_in_hours - SUNSET_START as f64) + / (SUNSET_END - SUNSET_START) as f64) + .clamp(0.0, 1.0); + ( + interpolate(TEMP_DAY, TEMP_NIGHT, factor), + interpolate(GAMMA_DAY, GAMMA_NIGHT, factor), + ) + } else if (time_in_hours >= SUNRISE_START as f64) + && (time_in_hours <= SUNRISE_END as f64) + { + // sunrise transition + let factor = 1.0 + - ((time_in_hours - SUNRISE_START as f64) + / (SUNRISE_END - SUNRISE_START) as f64) + .clamp(0.0, 1.0); + ( + interpolate(TEMP_DAY, TEMP_NIGHT, factor), + interpolate(GAMMA_DAY, GAMMA_NIGHT, factor), + ) + } else if time_in_hours > SUNSET_END as f64 || time_in_hours < SUNRISE_START as f64 { + // full night + (TEMP_NIGHT, GAMMA_NIGHT) + } else { + // full day + (TEMP_DAY, GAMMA_DAY) + }; + + apply_settings(temp, gamma); + } + + tokio::select! { + _ = sleep(Duration::from_secs(300)) => {}, + _ = notify.notified() => {}, + } + } +}