Add ImportResult.UpdateTimestamp method

models/models.go

@@ -92,3 +92,27 @@ func (l LovesList) Less(i, j int) bool {
 func (l LovesList) Swap(i, j int) {
 	l[i], l[j] = l[j], l[i]
 }
+
+type ListensResult struct {
+	Error   error
+	Listens ListensList
+}
+
+type LovesResult struct {
+	Error error
+	Loves LovesList
+}
+
+type ImportResult struct {
+	TotalCount    int
+	ImportCount   int
+	LastTimestamp time.Time
+	ImportErrors  []string
+}
+
+// Sets LastTimestamp to newTime, if newTime is newer than LastTimestamp
+func (i *ImportResult) UpdateTimestamp(newTime time.Time) {
+	if newTime.Unix() > i.LastTimestamp.Unix() {
+		i.LastTimestamp = newTime
+	}
+}