Initial interfaces fr love transfer

backends/interfaces.go

@@ -42,6 +42,14 @@ type ListenImport interface {
 	ImportListens(listens []Listen, oldestTimestamp time.Time) (ImportResult, error)
 }
 
+type LovesExport interface {
+	ExportLoves(oldestTimestamp time.Time) ([]Love, error)
+}
+
+type LovesImport interface {
+	ExportLoves(loves []Love, oldestTimestamp time.Time) (ImportResult, error)
+}
+
 type ImportResult struct {
 	Count         int
 	LastTimestamp time.Time

backends/models.go

@@ -56,3 +56,11 @@ type Listen struct {
 	PlaybackDuration time.Duration
 	UserName         string
 }
+
+type Love struct {
+	Track
+	Created       time.Time
+	UserName      string
+	RecordingMbid MBID
+	RecordingMsid MBID
+}