fix some logic errors from refactoring

backend/mpmedia_mac.go

@@ -71,11 +71,12 @@ func InitMPMediaHandler(playbackManager *PlaybackManager, artURLLookup func(trac
 
 	mp.playbackManager.OnSongChange(func(track mediaprovider.MediaItem, _ *mediaprovider.Track) {
 		// Asynchronously because artwork fetching can take time
-		var meta mediaprovider.MediaItemMetadata
+		var meta *mediaprovider.MediaItemMetadata
-		if track == nil {
+		if track != nil {
-			meta = track.Metadata()
+			m := track.Metadata()
+			meta = &m
 		}
-		go mp.updateMetadata(&meta)
+		go mp.updateMetadata(meta)
 	})
 
 	mp.playbackManager.OnStopped(func() {
@@ -106,7 +107,9 @@ func (mp *MPMediaHandler) updateMetadata(meta *mediaprovider.MediaItemMetadata)
 		title = meta.Name
 		var err error
 		if artURL, err = mp.artURLLookup(meta.CoverArtID); err != nil {
-			log.Printf("error fetching art url: %s", err.Error())
+			if meta.CoverArtID != "" {
+				log.Printf("error fetching art url: %s", err.Error())
+			}
 		}
 		artist = strings.Join(meta.Artists, ", ")
 		duration = meta.Duration

backend/mpris.go

@@ -251,32 +251,48 @@ func (m *MPRISHandler) Metadata() (types.Metadata, error) {
 		trackObjPath = m.curTrackPath
 	}
 	status := m.pm.PlayerStatus()
-	var tr mediaprovider.Track
+
+	var meta mediaprovider.MediaItemMetadata
+	// metadata that can come only from tracks
+	var discNumber, trackNumber, userRating, playCount, year int
+	var genre string
+
 	if np := m.pm.NowPlaying(); np != nil && status.State != player.Stopped {
+		meta = np.Metadata()
 		if track, ok := np.(*mediaprovider.Track); ok {
-			tr = *track
+			discNumber = track.DiscNumber
+			trackNumber = track.TrackNumber
+			userRating = track.Rating
+			playCount = track.PlayCount
+			year = track.Year
+			genre = track.Genre
 		}
 	}
 	var artURL string
-	if tr.ID != "" && m.ArtURLLookup != nil {
+	if meta.ID != "" && m.ArtURLLookup != nil {
-		if u, err := m.ArtURLLookup(tr.CoverArtID); err == nil {
+		if u, err := m.ArtURLLookup(meta.CoverArtID); err == nil {
 			artURL = u
 		}
 	}
-	return types.Metadata{
+	mprisMeta := types.Metadata{
-		TrackId:        dbus.ObjectPath(trackObjPath),
+		TrackId:     dbus.ObjectPath(trackObjPath),
-		Length:         secondsToMicroseconds(status.Duration),
+		Length:      secondsToMicroseconds(status.Duration),
-		Title:          tr.Title,
+		Title:       meta.Name,
-		Album:          tr.Album,
+		Album:       meta.Album,
-		Artist:         tr.ArtistNames,
+		Artist:      meta.Artists,
-		DiscNumber:     tr.DiscNumber,
+		DiscNumber:  discNumber,
-		TrackNumber:    tr.TrackNumber,
+		TrackNumber: trackNumber,
-		Genre:          []string{tr.Genre},
+		UserRating:  float64(userRating) / 5,
-		UserRating:     float64(tr.Rating) / 5,
+		UseCount:    playCount,
-		ContentCreated: strconv.Itoa(tr.Year),
+		ArtUrl:      artURL,
-		UseCount:       tr.PlayCount,
+	}
-		ArtUrl:         artURL,
+	if genre != "" {
-	}, nil
+		mprisMeta.Genre = []string{genre}
+	}
+	if year != 0 {
+		mprisMeta.ContentCreated = strconv.Itoa(year)
+	}
+	return mprisMeta, nil
 }
 
 func (m *MPRISHandler) Volume() (float64, error) {

backend/playbackengine.go

@@ -44,7 +44,7 @@ type playbackEngine struct {
 	player        player.BasePlayer
 
 	playTimeStopwatch   util.Stopwatch
-	curTrackTime        float64
+	curTrackDuration    float64
 	latestTrackPosition float64 // cleared by checkScrobble
 	callbacksDisabled   bool
 
@@ -400,10 +400,7 @@ func (p *playbackEngine) handleOnTrackChange() {
 		}
 	}
 	p.wasStopped = false
-	p.curTrackTime = 0
+	p.curTrackDuration = float64(p.playQueue[p.nowPlayingIdx].Metadata().Duration)
-	if tr, ok := p.playQueue[p.nowPlayingIdx].(*mediaprovider.Track); ok {
-		p.curTrackTime = float64(tr.Duration)
-	}
 	p.sendNowPlayingScrobble() // Must come before invokeOnChangeCallbacks b/c track may immediately be scrobbled
 	p.invokeOnSongChangeCallbacks()
 	p.doUpdateTimePos(false)
@@ -512,10 +509,10 @@ func (p *playbackEngine) checkScrobble() {
 	}
 
 	playDur := p.playTimeStopwatch.Elapsed()
-	if playDur.Seconds() < 0.1 || p.curTrackTime < 0.1 {
+	if playDur.Seconds() < 0.1 || p.curTrackDuration < 0.1 {
 		return
 	}
-	pcnt := playDur.Seconds() / p.curTrackTime * 100
+	pcnt := playDur.Seconds() / p.curTrackDuration * 100
 	timeThresholdMet := p.scrobbleCfg.ThresholdTimeSeconds >= 0 &&
 		playDur.Seconds() >= float64(p.scrobbleCfg.ThresholdTimeSeconds)
 

backend/playbackmanager.go

@@ -281,7 +281,7 @@ func (p *PlaybackManager) SeekFraction(fraction float64) error {
 	} else if fraction > 1 {
 		fraction = 1
 	}
-	target := p.engine.curTrackTime * fraction
+	target := p.engine.curTrackDuration * fraction
 	return p.engine.SeekSeconds(target)
 }
 

backend/savedplayqueue.go

@@ -32,7 +32,7 @@ func SavePlayQueue(serverID string, pm *PlaybackManager, filepath string, server
 	trackIDs := make([]string, 0, len(queue))
 	for _, item := range queue {
 		if _, ok := item.(*mediaprovider.Track); ok {
-			// dont' save radio stations in play queue
+			// don't save radio stations in play queue
 			trackIDs = append(trackIDs, item.Metadata().ID)
 		}
 	}

ui/mainwindow.go

@@ -94,9 +94,9 @@ func NewMainWindow(fyneApp fyne.App, appName, displayAppName, appVersion string,
 		meta := item.Metadata()
 		artistDisp := ""
 		if tr, ok := item.(*mediaprovider.Track); ok {
-			artistDisp = strings.Join(tr.ArtistNames, ", ")
+			artistDisp = " – " + strings.Join(tr.ArtistNames, ", ")
 		}
-		m.Window.SetTitle(fmt.Sprintf("%s – %s · %s", meta.Name, artistDisp, displayAppName))
+		m.Window.SetTitle(fmt.Sprintf("%s%s · %s", meta.Name, artistDisp, displayAppName))
 		if m.App.Config.Application.ShowTrackChangeNotification {
 			// TODO: Once Fyne issue #2935 is resolved, show album cover
 			fyne.CurrentApp().SendNotification(&fyne.Notification{

ui/widgets/largenowplayingcard.go

@@ -115,13 +115,14 @@ func (n *LargeNowPlayingCard) Update(item mediaprovider.MediaItem) {
 		n.albumName.Text = ""
 		n.rating.Rating = 0
 		n.favorite.Favorite = false
+		return
 	}
 	meta := item.Metadata()
 	n.trackName.Segments[0].(*widget.TextSegment).Text = meta.Name
+	n.artistName.BuildSegments(meta.Artists, meta.ArtistIDs)
+	n.albumName.Text = meta.Album
 
 	if tr, ok := item.(*mediaprovider.Track); ok {
-		n.artistName.BuildSegments(tr.ArtistNames, tr.ArtistIDs)
-		n.albumName.Text = tr.Album
 		n.rating.Rating = tr.Rating
 		n.favorite.Favorite = tr.Favorite
 	}