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use std::{
path::Path,
pin::Pin,
task::{Context, Poll},
};
pub use notify;
use futures_channel::mpsc;
use futures_core::stream::Stream;
use notify::{RecommendedWatcher, RecursiveMode, Watcher};
type StreamItem = notify::Result<notify::Event>;
pub struct NotifyStream(mpsc::UnboundedReceiver<StreamItem>, RecommendedWatcher);
impl Stream for NotifyStream {
type Item = StreamItem;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
Pin::new(&mut self.0).poll_next(cx)
}
}
pub fn notify_stream<P: AsRef<Path>>(
path: P,
recursive_mode: RecursiveMode,
) -> notify::Result<NotifyStream> {
let (tx, rx) = mpsc::unbounded();
let mut watcher: RecommendedWatcher =
Watcher::new_immediate(move |i: notify::Result<notify::Event>| {
let _ = tx.unbounded_send(i).ok();
})?;
watcher.watch(path, recursive_mode)?;
Ok(NotifyStream(rx, watcher))
}