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Refactor adding context tracks to state

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This commit is contained in:
ashthespy 2019-03-28 15:27:50 +01:00
parent 14721f45fe
commit 8d08425ef3
1 changed files with 16 additions and 20 deletions
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36
connect/src/spirc.rs
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@ -1,9 +1,9 @@
use std;
use std::time::{SystemTime, UNIX_EPOCH};
use futures::{Async, Future, Poll, Sink, Stream};
use futures::future;
use futures::sync::{mpsc, oneshot};
use futures::{Async, Future, Poll, Sink, Stream};
use protobuf::{self, Message};
use rand;
use rand::seq::SliceRandom;
@ -776,26 +776,22 @@ impl SpircTask {
self.context_fut = self.resolve_uri(&context.next_page_url);
let new_tracks = &context.tracks;
debug!("Adding {:?} tracks from context to playlist", new_tracks.len());
let current_index = self.state.get_playing_track_index();
let mut new_index = 0;
{
let mut tracks = self.state.mut_track();
// Does this need to be optimised - we don't need to actually traverse the len of tracks
let tracks_len = tracks.len();
if tracks_len > CONTEXT_TRACKS_HISTORY {
tracks.rotate_right(tracks_len - CONTEXT_TRACKS_HISTORY);
tracks.truncate(CONTEXT_TRACKS_HISTORY);
}
// tracks.extend_from_slice(&mut new_tracks); // method doesn't exist for protobuf::RepeatedField
for t in new_tracks {
tracks.push(t.to_owned());
}
if current_index > CONTEXT_TRACKS_HISTORY as u32 {
new_index = current_index - CONTEXT_TRACKS_HISTORY as u32;
}
debug!("Adding {:?} tracks from context to frame", new_tracks.len());
let mut track_vec = self.state.take_track().into_vec();
if let Some(head) = track_vec.len().checked_sub(CONTEXT_TRACKS_HISTORY) {
track_vec.drain(0..head);
}
track_vec.extend_from_slice(&new_tracks);
self.state.set_track(protobuf::RepeatedField::from_vec(track_vec));
// Update playing index
if let Some(new_index) = self
.state
.get_playing_track_index()
.checked_sub(CONTEXT_TRACKS_HISTORY as u32)
{
self.state.set_playing_track_index(new_index);
}
self.state.set_playing_track_index(new_index);
}
}