From d5aa903da402798d7285e4ab47b3df01c9c903c6 Mon Sep 17 00:00:00 2001
From: Julia Friesel <julia.friesel@gmail.com>
Date: Fri, 13 Jul 2018 06:44:23 +0200
Subject: [PATCH] Check for fhm according to nfp, not just temp shift

---
 lib/sympto/index.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/sympto/index.js b/lib/sympto/index.js
index 36f8e5e..2005f32 100644
--- a/lib/sympto/index.js
+++ b/lib/sympto/index.js
@@ -4,19 +4,18 @@ import getPreOvulatoryPhase from './pre-ovulatory'
 import { LocalDate } from 'js-joda'
 import assert from 'assert'
 
-export default function ({ cycle, previousCycles = [] }) {
+export default function getSymptoThermalStatus({ cycle, previousCycles = [] }) {
   throwIfArgsAreNotInRequiredFormat(cycle, previousCycles)
 
   const status = {
     assumeFertility: true,
     phases: {}
   }
-  // TODO handle no previous cycles
 
   // if there was no first higher measurement in the previous cycle,
   // no infertile pre-ovulatory phase may be assumed
   const lastCycle = previousCycles[previousCycles.length - 1]
-  if (getTemperatureShift(lastCycle).detected && !cycle[0].mucus) {
+  if (lastCycle && getSymptoThermalStatus({cycle: lastCycle}).temperatureShift) {
     status.phases.preOvulatory = getPreOvulatoryPhase(cycle, previousCycles)
     if (status.phases.preOvulatory.cycleDays.length === cycle.length) {
       status.assumeFertility = false