From 3313c545eece0a29c49e7e1621e491d88f2f957b Mon Sep 17 00:00:00 2001
From: Florian Forster <ff@octo.it>
Date: Tue, 16 Jan 2018 22:35:29 +0100
Subject: [PATCH] Package gfit: Calculate "average" heart rate.

JSON does not support NaN data points.
---
 gfit/gfit.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/gfit/gfit.go b/gfit/gfit.go
index fcd88f1..33e5a66 100644
--- a/gfit/gfit.go
+++ b/gfit/gfit.go
@@ -3,7 +3,6 @@ package gfit
 import (
 	"context"
 	"fmt"
-	"math"
 	"net/http"
 	"strings"
 	"time"
@@ -417,13 +416,18 @@ func (c *Client) SetHeartRate(ctx context.Context, totalDurations []fitbit.Heart
 			break
 		}
 
+		average := float64(d.Min+d.Max) / 2.0
+		if d.Min <= restingHeartRate && restingHeartRate <= d.Max {
+			average = float64(restingHeartRate)
+		}
+
 		dataPoints = append(dataPoints, &fitness.DataPoint{
 			DataTypeName:   dataSource.DataType.Name,
 			StartTimeNanos: startTime.UnixNano(),
 			EndTimeNanos:   endTime.UnixNano(),
 			Value: []*fitness.Value{
 				&fitness.Value{
-					FpVal: math.NaN(),
+					FpVal: average,
 				},
 				&fitness.Value{
 					FpVal: float64(d.Max),
-- 
2.11.0