add scrobbling for Jellyfin

backend/mediaprovider/jellyfin/jellyfinmediaprovider.go

@@ -1,7 +1,6 @@
 package jellyfin
 
 import (
-	"errors"
 	"image"
 	"io"
 	"math"
@@ -360,8 +359,14 @@ func (j *jellyfinMediaProvider) DownloadTrack(trackID string) (io.Reader, error)
 	return resp.Body, nil
 }
 
-func (j *jellyfinMediaProvider) Scrobble(trackID string, submission bool) error {
-	return errors.New("unimplemented")
+func (j *jellyfinMediaProvider) ClientDecidesScrobble() bool { return false }
+
+func (j *jellyfinMediaProvider) TrackBeganPlayback(trackID string) error {
+	return j.client.UpdatePlayStatus(trackID, jellyfin.Start, 0)
+}
+
+func (j *jellyfinMediaProvider) TrackEndedPlayback(trackID string, position int, submission bool) error {
+	return j.client.UpdatePlayStatus(trackID, jellyfin.Stop, int64(position)*runTimeTicksPerSecond)
 }
 
 func (j *jellyfinMediaProvider) RescanLibrary() error {

backend/mediaprovider/mediaprovider.go

@@ -130,7 +130,14 @@ type MediaProvider interface {
 
 	DeletePlaylist(id string) error
 
-	Scrobble(trackID string, submission bool) error
+	// True if the `submission` parameter to TrackEndedPlayback will be respected
+	// If false, the begin playback scrobble registers a play count immediately
+	// when TrackBeganPlayback is invoked.
+	ClientDecidesScrobble() bool
+
+	TrackBeganPlayback(trackID string) error
+
+	TrackEndedPlayback(trackID string, positionSecs int, submission bool) error
 
 	DownloadTrack(trackID string) (io.Reader, error)
 

backend/mediaprovider/subsonic/subsonicmediaprovider.go

@@ -256,10 +256,21 @@ func (s *subsonicMediaProvider) ReplacePlaylistTracks(playlistID string, trackID
 	return s.client.CreatePlaylistWithTracks(trackIDs, map[string]string{"playlistId": playlistID})
 }
 
-func (s *subsonicMediaProvider) Scrobble(trackID string, submission bool) error {
+func (s *subsonicMediaProvider) ClientDecidesScrobble() bool { return true }
+
+func (s *subsonicMediaProvider) TrackBeganPlayback(trackID string) error {
 	return s.client.Scrobble(trackID, map[string]string{
 		"time":       strconv.FormatInt(time.Now().UnixMilli(), 10),
-		"submission": strconv.FormatBool(submission)})
+		"submission": "false"})
+}
+
+func (s *subsonicMediaProvider) TrackEndedPlayback(trackID string, _ int, submission bool) error {
+	if !submission {
+		return nil
+	}
+	return s.client.Scrobble(trackID, map[string]string{
+		"time":       strconv.FormatInt(time.Now().UnixMilli(), 10),
+		"submission": "true"})
 }
 
 func (s *subsonicMediaProvider) SetFavorite(params mediaprovider.RatingFavoriteParameters, favorite bool) error {