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|
use std::{collections::HashMap, sync::Arc, time::Duration};
use tokio::{
sync::{mpsc::Sender, Mutex},
task::{AbortHandle, JoinSet},
};
use zbus::zvariant::OwnedValue;
use crate::{
dbus::player::{PlaybackStatus, PlayerProxy},
i3bar::Block,
Error,
};
use super::{Component, Update};
const TICK_RATE: Duration = Duration::from_millis(500);
pub struct Title;
impl Component for Title {
const NAME: &'static str = "title";
type Updater = Self;
type Colorer = PlaybackStatus;
type Handler = ();
}
impl Update for Title {
type Value = String;
async fn listen(tx: Sender<Self::Value>, proxy: PlayerProxy<'_>) -> Result<(), Error> {
use futures_util::StreamExt;
let mut join_set = JoinSet::new();
let mut rotator = None;
let mut old_title = None;
Self::handle_metadata(
tx.clone(),
proxy.metadata().await?,
&mut old_title,
&mut rotator,
&mut join_set,
)
.await?;
let mut stream = proxy.receive_metadata_changed().await;
while let Some(signal) = stream.next().await {
if let Ok(metadata) = signal.get().await {
Self::handle_metadata(
tx.clone(),
metadata,
&mut old_title,
&mut rotator,
&mut join_set,
)
.await?;
}
}
Ok(())
}
async fn update(mut value: Self::Value, block: Arc<Mutex<Block>>) -> Result<bool, Error> {
value.push(' ');
let mut block = block.lock().await;
block.full_text = value;
Ok(true)
}
}
impl Title {
async fn handle_metadata(
tx: Sender<<<Self as Component>::Updater as Update>::Value>,
metadata: HashMap<String, OwnedValue>,
old_title: &mut Option<String>,
rotator: &mut Option<AbortHandle>,
join_set: &mut JoinSet<Result<(), Error>>,
) -> Result<(), Error> {
let Some(owned_value) = metadata.get("xesam:title") else {
return Ok(());
};
let title: String = owned_value.try_to_owned()?.try_into()?;
if old_title.as_ref().is_some_and(|s| *s == title) {
return Ok(());
}
if let Some(h) = rotator.take() {
h.abort();
};
*old_title = Some(title.clone());
if title.len() >= 10 {
let tx = tx.clone();
let mut chars = title.clone().chars().collect::<Vec<char>>();
chars.push(' ');
*rotator = Some(join_set.spawn(async move {
let mut interval = tokio::time::interval(TICK_RATE);
loop {
interval.tick().await;
tx.send(String::from_iter(chars[0..10].iter()))
.await
.unwrap();
chars.rotate_left(1);
}
}));
} else {
tx.send(title).await?;
}
Ok(())
}
}
|
