JSPF: Include full LB additional info in metadata

models/models.go

@@ -51,6 +51,48 @@ func (t Track) ArtistName() string {
 	return strings.Join(t.ArtistNames, ", ")
 }
 
+// Updates AdditionalInfo to have standard fields as defined by ListenBrainz
+func (t *Track) FillAdditionalInfo() {
+	if t.AdditionalInfo == nil {
+		t.AdditionalInfo = make(AdditionalInfo, 5)
+	}
+	if t.RecordingMbid != "" {
+		t.AdditionalInfo["recording_mbid"] = t.RecordingMbid
+	}
+	if t.ReleaseGroupMbid != "" {
+		t.AdditionalInfo["release_group_mbid"] = t.ReleaseGroupMbid
+	}
+	if t.ReleaseMbid != "" {
+		t.AdditionalInfo["release_mbid"] = t.ReleaseMbid
+	}
+	if len(t.ArtistMbids) > 0 {
+		t.AdditionalInfo["artist_mbids"] = t.ArtistMbids
+	}
+	if len(t.WorkMbids) > 0 {
+		t.AdditionalInfo["work_mbids"] = t.WorkMbids
+	}
+	if t.ISRC != "" {
+		t.AdditionalInfo["isrc"] = t.ISRC
+	}
+	if t.TrackNumber != 0 {
+		t.AdditionalInfo["tracknumber"] = t.TrackNumber
+	}
+	if t.DiscNumber != 0 {
+		t.AdditionalInfo["discnumber"] = t.DiscNumber
+	}
+	if t.Duration != 0 {
+		rounded := t.Duration.Round(time.Second)
+		if t.Duration == rounded {
+			t.AdditionalInfo["duration"] = int64(t.Duration.Seconds())
+		} else {
+			t.AdditionalInfo["duration_ms"] = t.Duration.Milliseconds()
+		}
+	}
+	if len(t.Tags) > 0 {
+		t.AdditionalInfo["tags"] = t.Tags
+	}
+}
+
 type Listen struct {
 	Track
 	ListenedAt       time.Time