715 lines
23 KiB
Rust
715 lines
23 KiB
Rust
use librespot::core::authentication::Credentials;
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use librespot::core::cache::Cache;
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use librespot::core::config::SessionConfig;
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use librespot::core::keymaster::Token;
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use librespot::core::mercury::MercuryError;
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use librespot::core::session::Session;
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use librespot::core::spotify_id::SpotifyId;
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use librespot::playback::config::PlayerConfig;
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use librespot::playback::audio_backend;
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use librespot::playback::config::Bitrate;
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use librespot::playback::player::Player;
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use rspotify::spotify::client::ApiError;
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use rspotify::spotify::client::Spotify as SpotifyAPI;
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use rspotify::spotify::model::album::{FullAlbum, SavedAlbum, SimplifiedAlbum};
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use rspotify::spotify::model::artist::FullArtist;
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use rspotify::spotify::model::page::{CursorBasedPage, Page};
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use rspotify::spotify::model::playlist::{FullPlaylist, PlaylistTrack, SimplifiedPlaylist};
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use rspotify::spotify::model::search::{
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SearchAlbums, SearchArtists, SearchPlaylists, SearchTracks,
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};
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use rspotify::spotify::model::track::{FullTrack, SavedTrack};
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use rspotify::spotify::model::user::PrivateUser;
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use failure::Error;
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use futures;
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use futures::sync::mpsc;
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use futures::sync::oneshot;
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use futures::Async;
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use futures::Future;
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use futures::Stream;
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use tokio_core::reactor::Core;
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use tokio_timer;
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use std::sync::RwLock;
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use std::thread;
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use std::time::{Duration, SystemTime};
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use artist::Artist;
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use config;
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use events::{Event, EventManager};
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use track::Track;
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enum WorkerCommand {
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Load(Box<Track>),
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Play,
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Pause,
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Stop,
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Seek(u32),
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RequestToken(oneshot::Sender<Token>),
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}
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#[derive(Clone, Debug, PartialEq)]
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pub enum PlayerEvent {
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Playing,
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Paused,
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Stopped,
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FinishedTrack,
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}
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pub struct Spotify {
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status: RwLock<PlayerEvent>,
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api: RwLock<SpotifyAPI>,
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elapsed: RwLock<Option<Duration>>,
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since: RwLock<Option<SystemTime>>,
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token_issued: RwLock<Option<SystemTime>>,
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channel: mpsc::UnboundedSender<WorkerCommand>,
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user: String,
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}
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struct Worker {
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events: EventManager,
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commands: mpsc::UnboundedReceiver<WorkerCommand>,
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session: Session,
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player: Player,
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play_task: Box<dyn futures::Future<Item = (), Error = oneshot::Canceled>>,
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refresh_task: Box<dyn futures::Stream<Item = (), Error = tokio_timer::Error>>,
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token_task: Box<dyn futures::Future<Item = (), Error = MercuryError>>,
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active: bool,
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}
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impl Worker {
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fn new(
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events: EventManager,
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commands: mpsc::UnboundedReceiver<WorkerCommand>,
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session: Session,
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player: Player,
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) -> Worker {
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Worker {
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events,
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commands,
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player,
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session,
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play_task: Box::new(futures::empty()),
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refresh_task: Box::new(futures::stream::empty()),
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token_task: Box::new(futures::empty()),
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active: false,
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}
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}
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}
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impl Worker {
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fn create_refresh(&self) -> Box<dyn futures::Stream<Item = (), Error = tokio_timer::Error>> {
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let ev = self.events.clone();
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let future =
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tokio_timer::Interval::new_interval(Duration::from_millis(400)).map(move |_| {
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ev.trigger();
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});
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Box::new(future)
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}
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}
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impl futures::Future for Worker {
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type Item = ();
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type Error = ();
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fn poll(&mut self) -> futures::Poll<(), ()> {
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loop {
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let mut progress = false;
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if let Async::Ready(Some(cmd)) = self.commands.poll().unwrap() {
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progress = true;
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debug!("message received!");
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match cmd {
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WorkerCommand::Load(track) => {
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if let Some(track_id) = &track.id {
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let id = SpotifyId::from_base62(track_id).expect("could not parse id");
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self.play_task = Box::new(self.player.load(id, false, 0));
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info!("player loading track: {:?}", track);
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} else {
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self.events.send(Event::Player(PlayerEvent::FinishedTrack));
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}
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}
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WorkerCommand::Play => {
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self.player.play();
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self.events.send(Event::Player(PlayerEvent::Playing));
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self.refresh_task = self.create_refresh();
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self.active = true;
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}
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WorkerCommand::Pause => {
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self.player.pause();
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self.events.send(Event::Player(PlayerEvent::Paused));
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self.active = false;
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}
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WorkerCommand::Stop => {
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self.player.stop();
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self.events.send(Event::Player(PlayerEvent::Stopped));
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self.active = false;
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}
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WorkerCommand::Seek(pos) => {
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self.player.seek(pos);
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}
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WorkerCommand::RequestToken(sender) => {
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self.token_task = Spotify::get_token(&self.session, sender);
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progress = true;
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}
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}
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}
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match self.play_task.poll() {
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Ok(Async::Ready(())) => {
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debug!("end of track!");
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progress = true;
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self.events.send(Event::Player(PlayerEvent::FinishedTrack));
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}
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Ok(Async::NotReady) => (),
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Err(oneshot::Canceled) => {
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debug!("player task is over!");
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self.play_task = Box::new(futures::empty());
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}
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}
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if let Ok(Async::Ready(_)) = self.refresh_task.poll() {
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self.refresh_task = if self.active {
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progress = true;
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self.create_refresh()
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} else {
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Box::new(futures::stream::empty())
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};
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}
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match self.token_task.poll() {
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Ok(Async::Ready(_)) => {
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info!("token updated!");
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self.token_task = Box::new(futures::empty())
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}
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Err(e) => {
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error!("could not generate token: {:?}", e);
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}
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_ => (),
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}
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if !progress {
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return Ok(Async::NotReady);
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}
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}
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}
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}
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impl Spotify {
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pub fn new(events: EventManager, credentials: Credentials) -> Spotify {
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let player_config = PlayerConfig {
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bitrate: Bitrate::Bitrate320,
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normalisation: false,
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normalisation_pregain: 0.0,
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};
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let (user_tx, user_rx) = oneshot::channel();
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let (tx, rx) = mpsc::unbounded();
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{
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let events = events.clone();
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thread::spawn(move || Self::worker(events, rx, player_config, credentials, user_tx));
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}
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let spotify = Spotify {
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status: RwLock::new(PlayerEvent::Stopped),
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api: RwLock::new(SpotifyAPI::default()),
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elapsed: RwLock::new(None),
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since: RwLock::new(None),
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token_issued: RwLock::new(None),
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channel: tx,
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user: user_rx.wait().expect("error retrieving userid from worker"),
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};
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// acquire token for web api usage
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spotify.refresh_token();
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spotify
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}
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pub fn test_credentials(credentials: Credentials) -> bool {
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let th = thread::spawn(|| {
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let mut core = Core::new().unwrap();
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let config = SessionConfig::default();
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let handle = core.handle();
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core.run(Session::connect(config, credentials, None, handle))
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.unwrap();
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});
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th.join().is_ok()
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}
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fn create_session(core: &mut Core, credentials: Credentials) -> Session {
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let session_config = SessionConfig::default();
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let cache = Cache::new(config::cache_path("librespot"), true);
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let handle = core.handle();
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debug!("opening spotify session");
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core.run(Session::connect(
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session_config,
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credentials,
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Some(cache),
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handle,
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))
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.ok()
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.unwrap()
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}
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fn get_token(
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session: &Session,
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sender: oneshot::Sender<Token>,
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) -> Box<dyn Future<Item = (), Error = MercuryError>> {
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let client_id = config::CLIENT_ID;
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let scopes = "user-read-private,playlist-read-private,playlist-read-collaborative,playlist-modify-public,playlist-modify-private,user-follow-modify,user-follow-read,user-library-read,user-library-modify,user-top-read,user-read-recently-played";
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let url = format!(
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"hm://keymaster/token/authenticated?client_id={}&scope={}",
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client_id, scopes
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);
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Box::new(
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session
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.mercury()
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.get(url)
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.map(move |response| {
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let data = response.payload.first().expect("Empty payload");
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let data = String::from_utf8(data.clone()).unwrap();
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let token: Token = serde_json::from_str(&data).unwrap();
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info!("new token received: {:?}", token);
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token
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})
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.map(|token| sender.send(token).unwrap()),
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)
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}
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fn worker(
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events: EventManager,
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commands: mpsc::UnboundedReceiver<WorkerCommand>,
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player_config: PlayerConfig,
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credentials: Credentials,
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user_tx: oneshot::Sender<String>,
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) {
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let mut core = Core::new().unwrap();
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let session = Self::create_session(&mut core, credentials);
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user_tx
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.send(session.username())
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.expect("could not pass username back to Spotify::new");
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let backend = audio_backend::find(None).unwrap();
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let (player, _eventchannel) =
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Player::new(player_config, session.clone(), None, move || {
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(backend)(None)
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});
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let worker = Worker::new(events, commands, session, player);
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debug!("worker thread ready.");
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core.run(worker).unwrap();
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debug!("worker thread finished.");
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}
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pub fn get_current_status(&self) -> PlayerEvent {
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let status = self
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.status
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.read()
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.expect("could not acquire read lock on playback status");
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(*status).clone()
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}
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pub fn get_current_progress(&self) -> Duration {
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self.get_elapsed().unwrap_or(Duration::from_secs(0))
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+ self
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.get_since()
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.map(|t| t.elapsed().unwrap())
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.unwrap_or(Duration::from_secs(0))
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}
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fn set_elapsed(&self, new_elapsed: Option<Duration>) {
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let mut elapsed = self
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.elapsed
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.write()
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.expect("could not acquire write lock on elapsed time");
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*elapsed = new_elapsed;
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}
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fn get_elapsed(&self) -> Option<Duration> {
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let elapsed = self
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.elapsed
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.read()
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.expect("could not acquire read lock on elapsed time");
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(*elapsed)
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}
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fn set_since(&self, new_since: Option<SystemTime>) {
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let mut since = self
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.since
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.write()
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.expect("could not acquire write lock on since time");
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*since = new_since;
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}
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fn get_since(&self) -> Option<SystemTime> {
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let since = self
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.since
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.read()
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.expect("could not acquire read lock on since time");
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(*since)
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}
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pub fn refresh_token(&self) {
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{
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let expiry = self.token_issued.read().unwrap();
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if let Some(time) = *expiry {
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if time.elapsed().unwrap() < Duration::from_secs(3000) {
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return;
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}
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}
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}
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let (token_tx, token_rx) = oneshot::channel();
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self.channel
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.unbounded_send(WorkerCommand::RequestToken(token_tx))
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.unwrap();
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let token = token_rx.wait().unwrap();
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// update token used by web api calls
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self.api.write().expect("can't writelock api").access_token = Some(token.access_token);
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self.token_issued
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.write()
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.unwrap()
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.replace(SystemTime::now());
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}
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/// retries once when rate limits are hit
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fn api_with_retry<F, R>(&self, cb: F) -> Option<R>
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where
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F: Fn(&SpotifyAPI) -> Result<R, Error>,
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{
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let result = {
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let api = self.api.read().expect("can't read api");
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cb(&api)
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};
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match result {
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Ok(v) => Some(v),
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Err(e) => {
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debug!("api error: {:?}", e);
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if let Ok(apierror) = e.downcast::<ApiError>() {
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match apierror {
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ApiError::RateLimited(d) => {
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debug!("rate limit hit. waiting {:?} seconds", d);
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thread::sleep(Duration::from_secs(d.unwrap_or(0) as u64));
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let api = self.api.read().expect("can't read api");
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cb(&api).ok()
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}
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ApiError::Unauthorized => {
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debug!("token unauthorized. trying refresh..");
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self.refresh_token();
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let api = self.api.read().expect("can't read api");
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cb(&api).ok()
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}
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e => {
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error!("unhandled api error: {}", e);
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None
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}
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}
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} else {
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None
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}
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}
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}
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}
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pub fn append_tracks(
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&self,
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playlist_id: &str,
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tracks: &[String],
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position: Option<i32>,
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) -> bool {
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self.api_with_retry(|api| {
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api.user_playlist_add_tracks(&self.user, playlist_id, &tracks, position)
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})
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.is_some()
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}
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pub fn overwrite_playlist(&self, id: &str, tracks: &[Track]) {
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// extract only track IDs
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let mut tracks: Vec<String> = tracks
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.iter()
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.filter(|track| track.id.is_some())
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.map(|track| track.id.clone().unwrap())
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.collect();
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// we can only send 100 tracks per request
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let mut remainder = if tracks.len() > 100 {
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Some(tracks.split_off(100))
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} else {
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None
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};
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if let Some(()) =
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self.api_with_retry(|api| api.user_playlist_replace_tracks(&self.user, id, &tracks))
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{
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debug!("saved {} tracks to playlist {}", tracks.len(), id);
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while let Some(ref mut tracks) = remainder.clone() {
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// grab the next set of 100 tracks
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remainder = if tracks.len() > 100 {
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Some(tracks.split_off(100))
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} else {
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None
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};
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debug!("adding another {} tracks to playlist", tracks.len());
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if self.append_tracks(id, tracks, None) {
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debug!("{} tracks successfully added", tracks.len());
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} else {
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error!("error saving tracks to playlists {}", id);
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return;
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}
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}
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} else {
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error!("error saving tracks to playlist {}", id);
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}
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}
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pub fn delete_playlist(&self, id: &str) -> bool {
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self.api_with_retry(|api| api.user_playlist_unfollow(&self.user, id))
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.is_some()
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}
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pub fn create_playlist(
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&self,
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name: &str,
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public: Option<bool>,
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description: Option<String>,
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) -> Option<String> {
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let result = self.api_with_retry(|api| {
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api.user_playlist_create(&self.user, name, public, description.clone())
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});
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result.map(|r| r.id)
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}
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pub fn album(&self, album_id: &str) -> Option<FullAlbum> {
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self.api_with_retry(|api| api.album(album_id))
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}
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pub fn artist(&self, artist_id: &str) -> Option<FullArtist> {
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self.api_with_retry(|api| api.artist(artist_id))
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}
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pub fn playlist(&self, playlist_id: &str) -> Option<FullPlaylist> {
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self.api_with_retry(|api| api.playlist(playlist_id, None, None))
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}
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pub fn track(&self, track_id: &str) -> Option<FullTrack> {
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self.api_with_retry(|api| api.track(track_id))
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}
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pub fn search_track(&self, query: &str, limit: u32, offset: u32) -> Option<SearchTracks> {
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self.api_with_retry(|api| api.search_track(query, limit, offset, None))
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}
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pub fn search_album(&self, query: &str, limit: u32, offset: u32) -> Option<SearchAlbums> {
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self.api_with_retry(|api| api.search_album(query, limit, offset, None))
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}
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pub fn search_artist(&self, query: &str, limit: u32, offset: u32) -> Option<SearchArtists> {
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self.api_with_retry(|api| api.search_artist(query, limit, offset, None))
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}
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pub fn search_playlist(&self, query: &str, limit: u32, offset: u32) -> Option<SearchPlaylists> {
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self.api_with_retry(|api| api.search_playlist(query, limit, offset, None))
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}
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pub fn current_user_playlist(
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&self,
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limit: u32,
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offset: u32,
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) -> Option<Page<SimplifiedPlaylist>> {
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self.api_with_retry(|api| api.current_user_playlists(limit, offset))
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}
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pub fn user_playlist_tracks(
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&self,
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playlist_id: &str,
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limit: u32,
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offset: u32,
|
|
) -> Option<Page<PlaylistTrack>> {
|
|
let user = self.user.clone();
|
|
self.api_with_retry(|api| {
|
|
api.user_playlist_tracks(&user, playlist_id, None, limit, offset, None)
|
|
})
|
|
}
|
|
|
|
pub fn full_album(&self, album_id: &str) -> Option<FullAlbum> {
|
|
self.api_with_retry(|api| api.album(album_id))
|
|
}
|
|
|
|
pub fn artist_albums(
|
|
&self,
|
|
artist_id: &str,
|
|
limit: u32,
|
|
offset: u32,
|
|
) -> Option<Page<SimplifiedAlbum>> {
|
|
self.api_with_retry(|api| {
|
|
api.artist_albums(artist_id, None, None, Some(limit), Some(offset))
|
|
})
|
|
}
|
|
|
|
pub fn current_user_followed_artists(
|
|
&self,
|
|
last: Option<String>,
|
|
) -> Option<CursorBasedPage<FullArtist>> {
|
|
self.api_with_retry(|api| api.current_user_followed_artists(50, last.clone()))
|
|
.map(|cp| cp.artists)
|
|
}
|
|
|
|
pub fn user_follow_artists(&self, ids: Vec<String>) -> Option<()> {
|
|
self.api_with_retry(|api| api.user_follow_artists(&ids))
|
|
}
|
|
|
|
pub fn user_unfollow_artists(&self, ids: Vec<String>) -> Option<()> {
|
|
self.api_with_retry(|api| api.user_unfollow_artists(&ids))
|
|
}
|
|
|
|
pub fn current_user_saved_albums(&self, offset: u32) -> Option<Page<SavedAlbum>> {
|
|
self.api_with_retry(|api| api.current_user_saved_albums(50, offset))
|
|
}
|
|
|
|
pub fn current_user_saved_albums_add(&self, ids: Vec<String>) -> Option<()> {
|
|
self.api_with_retry(|api| api.current_user_saved_albums_add(&ids))
|
|
}
|
|
|
|
pub fn current_user_saved_albums_delete(&self, ids: Vec<String>) -> Option<()> {
|
|
self.api_with_retry(|api| api.current_user_saved_albums_delete(&ids))
|
|
}
|
|
|
|
pub fn current_user_saved_tracks(&self, offset: u32) -> Option<Page<SavedTrack>> {
|
|
self.api_with_retry(|api| api.current_user_saved_tracks(50, offset))
|
|
}
|
|
|
|
pub fn current_user_saved_tracks_add(&self, ids: Vec<String>) -> Option<()> {
|
|
self.api_with_retry(|api| api.current_user_saved_tracks_add(&ids))
|
|
}
|
|
|
|
pub fn current_user_saved_tracks_delete(&self, ids: Vec<String>) -> Option<()> {
|
|
self.api_with_retry(|api| api.current_user_saved_tracks_delete(&ids))
|
|
}
|
|
|
|
pub fn user_playlist_follow_playlist(&self, owner_id: String, id: String) -> Option<()> {
|
|
self.api_with_retry(|api| api.user_playlist_follow_playlist(&owner_id, &id, true))
|
|
}
|
|
|
|
pub fn artist_top_tracks(&self, id: String) -> Option<Vec<Track>> {
|
|
self.api_with_retry(|api| api.artist_top_tracks(&id, None))
|
|
.map(|ft| ft.tracks.iter().map(|t| t.into()).collect())
|
|
}
|
|
|
|
pub fn artist_related_artists(&self, id: String) -> Option<Vec<Artist>> {
|
|
self.api_with_retry(|api| api.artist_related_artists(&id))
|
|
.map(|fa| fa.artists.iter().map(|a| a.into()).collect())
|
|
}
|
|
|
|
pub fn current_user(&self) -> Option<PrivateUser> {
|
|
self.api_with_retry(|api| api.current_user())
|
|
}
|
|
|
|
pub fn load(&self, track: &Track) {
|
|
info!("loading track: {:?}", track);
|
|
self.channel
|
|
.unbounded_send(WorkerCommand::Load(Box::new(track.clone())))
|
|
.unwrap();
|
|
}
|
|
|
|
pub fn update_status(&self, new_status: PlayerEvent) {
|
|
match new_status {
|
|
PlayerEvent::Paused => {
|
|
self.set_elapsed(Some(self.get_current_progress()));
|
|
self.set_since(None);
|
|
}
|
|
PlayerEvent::Playing => {
|
|
self.set_since(Some(SystemTime::now()));
|
|
}
|
|
PlayerEvent::Stopped | PlayerEvent::FinishedTrack => {
|
|
self.set_elapsed(None);
|
|
self.set_since(None);
|
|
}
|
|
}
|
|
|
|
let mut status = self
|
|
.status
|
|
.write()
|
|
.expect("could not acquire write lock on player status");
|
|
*status = new_status;
|
|
}
|
|
|
|
pub fn update_track(&self) {
|
|
self.set_elapsed(None);
|
|
self.set_since(None);
|
|
}
|
|
|
|
pub fn play(&self) {
|
|
info!("play()");
|
|
self.channel.unbounded_send(WorkerCommand::Play).unwrap();
|
|
}
|
|
|
|
pub fn toggleplayback(&self) {
|
|
let status = self
|
|
.status
|
|
.read()
|
|
.expect("could not acquire read lock on player state");
|
|
match *status {
|
|
PlayerEvent::Playing => self.pause(),
|
|
PlayerEvent::Paused => self.play(),
|
|
_ => (),
|
|
}
|
|
}
|
|
|
|
pub fn pause(&self) {
|
|
info!("pause()");
|
|
self.channel.unbounded_send(WorkerCommand::Pause).unwrap();
|
|
}
|
|
|
|
pub fn stop(&self) {
|
|
info!("stop()");
|
|
self.channel.unbounded_send(WorkerCommand::Stop).unwrap();
|
|
}
|
|
|
|
pub fn seek(&self, position_ms: u32) {
|
|
self.set_elapsed(Some(Duration::from_millis(position_ms.into())));
|
|
self.set_since(if self.get_current_status() == PlayerEvent::Playing {
|
|
Some(SystemTime::now())
|
|
} else {
|
|
None
|
|
});
|
|
|
|
self.channel
|
|
.unbounded_send(WorkerCommand::Seek(position_ms))
|
|
.unwrap();
|
|
}
|
|
|
|
pub fn seek_relative(&self, delta: i32) {
|
|
let progress = self.get_current_progress();
|
|
let new = (progress.as_secs() * 1000) as i32 + progress.subsec_millis() as i32 + delta;
|
|
self.seek(std::cmp::max(0, new) as u32);
|
|
}
|
|
}
|
|
|
|
pub enum URIType {
|
|
Album,
|
|
Artist,
|
|
Track,
|
|
Playlist,
|
|
}
|
|
|
|
impl URIType {
|
|
pub fn from_uri(s: &str) -> Option<URIType> {
|
|
if s.starts_with("spotify:album:") {
|
|
Some(URIType::Album)
|
|
} else if s.starts_with("spotify:artist:") {
|
|
Some(URIType::Artist)
|
|
} else if s.starts_with("spotify:track:") {
|
|
Some(URIType::Track)
|
|
} else if s.starts_with("spotify:user:") && s.contains(":playlist:") {
|
|
Some(URIType::Playlist)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|