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use std::{ops::ControlFlow, time::Duration};
use tokio::task::JoinHandle;
use tokio_stream::StreamExt;
use zbus::{proxy::PropertyChanged, Connection};
use crate::{
dbus::player::{Metadata, PlaybackStatus, PlayerProxy},
i3bar::{Align, Block, MinWidth},
Blocks, Error,
};
const TICK_RATE: Duration = Duration::from_millis(500);
pub async fn listeners(blocks: Blocks) -> Result<(), Error> {
let conn = Connection::session().await?;
let proxy = PlayerProxy::builder(&conn)
.destination("org.mpris.MediaPlayer2.playerctld")?
.build()
.await?;
let black = std::env::var("BASE16_COLOR_00_HEX").ok();
let cyan = std::env::var("BASE16_COLOR_0C_HEX").ok();
let yellow = std::env::var("BASE16_COLOR_0A_HEX").ok();
let mut rotator: Option<JoinHandle<Result<(), Error>>> = None;
let mut old_title = String::new();
let mut metadata = proxy.receive_metadata_changed().await;
let mut prev = proxy.receive_can_go_previous_changed().await;
let mut play = proxy.receive_playback_status_changed().await;
let mut next = proxy.receive_can_go_next_changed().await;
let mut volume = proxy.receive_volume_changed().await;
loop {
tokio::select! {
Some(prop) = metadata.next() => handle_metadata(prop, blocks.clone(), &mut old_title, &mut rotator).await,
Some(prop) = prev.next() => handle_prev_next(prop, blocks.clone(), '', "mpris-prev").await,
Some(prop) = play.next() => handle_play(prop, blocks.clone(), black.clone(), cyan.clone(), yellow.clone()).await,
Some(prop) = next.next() => handle_prev_next(prop, blocks.clone(), '', "mpris-next").await,
Some(prop) = volume.next() => handle_volume(prop, blocks.clone()).await,
else => {
eprintln!("Failed to get next property");
break
}
};
blocks.notify.notify_one();
}
Ok(())
}
async fn title_rotator(blocks: Blocks, title: String) -> Result<(), Error> {
let mut interval = tokio::time::interval(TICK_RATE);
let mut chars = title.chars().collect::<Vec<char>>();
chars.push(' ');
let full_text = String::from_iter(chars[0..10].iter());
blocks.value.write().await[1] = Some(Block {
name: Some("mpris-title".into()),
min_width: Some(MinWidth::Text(format!("x{}", full_text))),
full_text,
separator: Some(false),
separator_block_width: Some(0),
..Default::default()
});
loop {
interval.tick().await;
let mut value = blocks.value.write().await;
if let Some(block) = &mut value[1] {
block.full_text = String::from_iter(chars[0..10].iter());
};
chars.rotate_left(1);
}
}
async fn handle_metadata(
prop: PropertyChanged<'_, Metadata>,
blocks: Blocks,
old_title: &mut String,
rotator: &mut Option<JoinHandle<Result<(), Error>>>,
) -> ControlFlow<Result<(), Error>> {
let title = match prop.get().await.map(|m| m.title) {
Ok(Some(s)) if *old_title != s => s,
_ => return ControlFlow::Continue(()),
};
old_title.clone_from(&title);
rotator.take().into_iter().for_each(|h| h.abort());
if title.len() >= 10 {
*rotator = Some(tokio::spawn(title_rotator(blocks.clone(), title)));
} else {
blocks.value.write().await[1] = Some(Block {
name: Some("mpris-title".into()),
min_width: Some(MinWidth::Text(format!("x{}", title))),
full_text: title,
separator: Some(false),
separator_block_width: Some(0),
..Default::default()
});
}
ControlFlow::Continue(())
}
async fn handle_prev_next(
prop: PropertyChanged<'_, bool>,
blocks: Blocks,
icon: char,
name: &'static str,
) -> ControlFlow<Result<(), Error>> {
if let Ok(value) = prop.get().await {
blocks.value.write().await[2] = value.then_some(Block {
name: Some(name.into()),
full_text: icon.into(),
min_width: Some(MinWidth::Text("xx".to_string())),
align: Align::Center,
separator: Some(false),
separator_block_width: Some(0),
..Default::default()
});
};
ControlFlow::Continue(())
}
async fn handle_play(
prop: PropertyChanged<'_, PlaybackStatus>,
blocks: Blocks,
black: Option<String>,
cyan: Option<String>,
yellow: Option<String>,
) -> ControlFlow<Result<(), Error>> {
let (icon, color, bg) = match prop.get().await {
Ok(PlaybackStatus::Playing) => ('', black.clone(), cyan.clone()),
Ok(PlaybackStatus::Paused) => ('', black.clone(), yellow.clone()),
Ok(PlaybackStatus::Stopped) => ('', None, None),
Err(_) => return ControlFlow::Continue(()),
};
let mut blocks = blocks.value.write().await;
blocks[3] = Some(Block {
name: Some("mpris-next".into()),
full_text: icon.into(),
min_width: Some(MinWidth::Text("xx".to_string())),
align: Align::Center,
separator: Some(false),
separator_block_width: Some(0),
..Default::default()
});
for block in blocks.iter_mut().flatten() {
block.color.clone_from(&color);
block.background.clone_from(&bg);
}
ControlFlow::Continue(())
}
async fn handle_volume(
prop: PropertyChanged<'_, f64>,
blocks: Blocks,
) -> ControlFlow<Result<(), Error>> {
let full_text = match prop.get().await.map(|v| (v * 100_f64) as u32) {
Ok(v @ 66..) => format!(" {v}%"),
Ok(v @ 33..) => format!(" {v}%"),
Ok(v @ 0..) => format!(" {v}%"),
Err(_) => return ControlFlow::Continue(()),
};
blocks.value.write().await[5] = Some(Block {
name: Some("mpris-volume".into()),
min_width: Some(MinWidth::Text(format!("x{}", full_text))),
full_text,
align: Align::Center,
..Default::default()
});
ControlFlow::Continue(())
}
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