Added datavalue filtering on date

main.go

@@ -680,13 +680,44 @@ func pageDatapointValues(w http.ResponseWriter, r *http.Request, _ *session.T) {
 		return
 	}
 
+	// GET parameters.
+	display := r.URL.Query().Get("display")
+	if display == "" && datapoint.Datatype == INT {
+		display = "graph"
+	}
+
+	var timeFrom, timeTo time.Time
+	timeFromParam := r.URL.Query().Get("f")
+	if timeFromParam == "" {
+		timeFrom = time.Now().Add(time.Duration(-(24 * 7) * time.Hour))
+	} else {
+		timeFrom, err = time.Parse("2006-01-02T15:04:05", timeFromParam)
+		if err != nil {
+			httpError(w, werr.Wrap(err).Log())
+			return
+		}
+	}
+
+	timeToParam := r.URL.Query().Get("t")
+	if timeToParam == "" {
+		timeTo = time.Now()
+	} else {
+		timeTo, err = time.Parse("2006-01-02T15:04:05", timeToParam)
+		if err != nil {
+			httpError(w, werr.Wrap(err).Log())
+			return
+		}
+	}
+
+	// Fetch data point values according to the times.
 	var values []DatapointValue
-	values, err = DatapointValues(id)
+	values, err = DatapointValues(id, timeFrom, timeTo)
 	if err != nil {
 		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
+	logger.Info("FOO", "from", timeFrom, "to", timeTo, "t", timeToParam)
 	page := Page{
 		LAYOUT: "main",
 		PAGE:   "datapoint_values",
@@ -699,7 +730,9 @@ func pageDatapointValues(w http.ResponseWriter, r *http.Request, _ *session.T) {
 	page.Data = map[string]any{
 		"Datapoint": datapoint,
 		"Values":    values,
-		"Display":   r.URL.Query().Get("display"),
+		"TimeFrom":  timeFrom.Format("2006-01-02T15:04:05"),
+		"TimeTo":    timeTo.Format("2006-01-02T15:04:05"),
+		"Display":   display,
 	}
 	page.Render(w)
 	return