(Re)store currently playing track + shuffle state

Solves #448

src/commands.rs

@@ -108,7 +108,15 @@ impl CommandManager {
             Command::Quit => {
                 let queue = self.queue.queue.read().expect("can't readlock queue");
                 self.config.with_state_mut(move |mut s| {
-                    s.queue = queue.clone();
+                    debug!(
+                        "saving state, {} items, current track: {:?}",
+                        queue.len(),
+                        self.queue.get_current_index()
+                    );
+                    s.queuestate.queue = queue.clone();
+                    s.queuestate.random_order = self.queue.get_random_order();
+                    s.queuestate.current_track = self.queue.get_current_index();
+                    s.queuestate.track_progress = self.spotify.get_current_progress();
                 });
                 self.config.save_state();
                 s.quit();

src/config.rs

@@ -60,12 +60,21 @@ pub struct SortingOrder {
     pub direction: SortDirection,
 }
 
+#[derive(Serialize, Default, Deserialize, Debug, Clone)]
+pub struct QueueState {
+    pub current_track: Option<usize>,
+    pub random_order: Option<Vec<usize>>,
+    pub track_progress: std::time::Duration,
+    pub queue: Vec<Playable>,
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct UserState {
     pub volume: u16,
     pub shuffle: bool,
     pub repeat: queue::RepeatSetting,
-    pub queue: Vec<Playable>,
+    pub queuestate: QueueState,
+    #[serde(serialize_with = "toml::ser::tables_last")]
     pub playlist_orders: HashMap<String, SortingOrder>,
 }
 
@@ -75,7 +84,7 @@ impl Default for UserState {
             volume: u16::max_value(),
             shuffle: false,
             repeat: queue::RepeatSetting::None,
-            queue: Vec::new(),
+            queuestate: QueueState::default(),
             playlist_orders: HashMap::new(),
         }
     }

src/queue.rs

@@ -31,14 +31,23 @@ pub struct Queue {
 
 impl Queue {
     pub fn new(spotify: Spotify, cfg: Arc<Config>) -> Queue {
-        let queue = cfg.state().queue.clone();
-        Queue {
-            queue: Arc::new(RwLock::new(queue)),
-            spotify,
-            current_track: RwLock::new(None),
-            random_order: RwLock::new(None),
+        let state = cfg.state().queuestate.clone();
+        let queue = Queue {
+            queue: Arc::new(RwLock::new(state.queue)),
+            spotify: spotify.clone(),
+            current_track: RwLock::new(state.current_track),
+            random_order: RwLock::new(state.random_order),
             cfg,
+        };
+
+        if let Some(playable) = queue.get_current() {
+            spotify.load(&playable, false, state.track_progress.as_millis() as u32);
+            spotify.update_track();
+            spotify.pause();
+            spotify.seek(state.track_progress.as_millis() as u32);
         }
+
+        queue
     }
 
     pub fn next_index(&self) -> Option<usize> {
@@ -245,7 +254,7 @@ impl Queue {
         }
 
         if let Some(track) = &self.queue.read().unwrap().get(index) {
-            self.spotify.load(&track);
+            self.spotify.load(&track, true, 0);
             let mut current = self.current_track.write().unwrap();
             current.replace(index);
             self.spotify.update_track();
@@ -342,6 +351,10 @@ impl Queue {
         self.cfg.state().shuffle
     }
 
+    pub fn get_random_order(&self) -> Option<Vec<usize>> {
+        self.random_order.read().unwrap().clone()
+    }
+
     fn generate_random_order(&self) {
         let q = self.queue.read().unwrap();
         let mut order: Vec<usize> = Vec::with_capacity(q.len());

src/spotify.rs

@@ -735,9 +735,13 @@ impl Spotify {
         self.api_with_retry(|api| api.current_user())
     }
 
-    pub fn load(&self, track: &Playable) {
+    pub fn load(&self, track: &Playable, start_playing: bool, position_ms: u32) {
         info!("loading track: {:?}", track);
-        self.send_worker(WorkerCommand::Load(track.clone()));
+        self.send_worker(WorkerCommand::Load(
+            track.clone(),
+            start_playing,
+            position_ms,
+        ));
     }
 
     pub fn update_status(&self, new_status: PlayerEvent) {

src/spotify_worker.rs

@@ -18,7 +18,7 @@ use std::pin::Pin;
 use std::time::Duration;
 
 pub(crate) enum WorkerCommand {
-    Load(Playable),
+    Load(Playable, bool, u32),
     Play,
     Pause,
     Stop,
@@ -90,21 +90,23 @@ impl futures::Future for Worker {
                 progress = true;
                 debug!("message received!");
                 match cmd {
-                    WorkerCommand::Load(playable) => match SpotifyId::from_uri(&playable.uri()) {
-                        Ok(id) => {
-                            info!("player loading track: {:?}", id);
-                            if id.audio_type == SpotifyAudioType::NonPlayable {
-                                warn!("track is not playable");
+                    WorkerCommand::Load(playable, start_playing, position_ms) => {
+                        match SpotifyId::from_uri(&playable.uri()) {
+                            Ok(id) => {
+                                info!("player loading track: {:?}", id);
+                                if id.audio_type == SpotifyAudioType::NonPlayable {
+                                    warn!("track is not playable");
+                                    self.events.send(Event::Player(PlayerEvent::FinishedTrack));
+                                } else {
+                                    self.player.load(id, start_playing, position_ms);
+                                }
+                            }
+                            Err(e) => {
+                                error!("error parsing uri: {:?}", e);
                                 self.events.send(Event::Player(PlayerEvent::FinishedTrack));
-                            } else {
-                                self.player.load(id, true, 0);
                             }
                         }
-                        Err(e) => {
-                            error!("error parsing uri: {:?}", e);
-                            self.events.send(Event::Player(PlayerEvent::FinishedTrack));
-                        }
-                    },
+                    }
                     WorkerCommand::Play => {
                         self.player.play();
                     }