Check if it's time for refresh before refreshing

src/statusscreen/Config.go

@@ -4,7 +4,7 @@ package statusscreen
 type Config struct {
 	SL struct {
 		APIKey       string
-		RefreshDelay int
+		RefreshDelay int64
 		SiteID       int
 		APIURL       string
 	}

src/statusscreen/SL.go

@@ -54,16 +54,20 @@ func (sl *SL) GetOutput() string {
 		"Expcted",
 	})
 
-	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()
-	}
+	// Check if it's time to refresh yet
+	if (sl.lastRefresh + sl.Config.SL.RefreshDelay) <= time.Now().Unix() {
+		// If it is, refresh
+		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)
+		if err != nil {
+			log.Fatal(err)
+		}
 	}
 
 	for _, v := range sl.lastResponse.ResponseData.Metros {