Move calculation of when refresh is to setting the value

src/statusscreen/SL.go

@@ -16,7 +16,7 @@ import (
 type SL struct {
 	Config       *Config
 	lastResponse SLResponse
-	lastRefresh  int64
+	nextRefresh  int64
 }
 
 // SLResponse is a struct to get the interesting data from API Responses
@@ -56,18 +56,16 @@ func (sl *SL) GetOutput() string {
 	})
 
 	// Check if it's time to refresh yet
-	if (sl.lastRefresh + sl.Config.SL.RefreshDelay) <= time.Now().Unix() {
-		// If it is, refresh
+	if sl.nextRefresh <= time.Now().Unix() {
+		// If it is, refresh the data
 		sldata, err := sl.getTimeTable()
 
 		// If no error occured, save the latest data to the struct
 		if err == nil {
 			sl.lastResponse = sldata
-			sl.lastRefresh = time.Now().Unix()
-		}
-
-		if err != nil {
-			log.Fatal(err)
+			sl.nextRefresh = time.Now().Unix() + sl.Config.SL.RefreshDelay
+		} else {
+			// log.Fatal(err)
 		}
 	}