Hook up fertility temp status to app

lib/cycle.js

@@ -1,16 +1,21 @@
 import * as joda from 'js-joda'
-
 const LocalDate = joda.LocalDate
 
-export default function config(opts = {}) {
+export default function config(opts) {
   let bleedingDaysSortedByDate
-  if (!opts.bleedingDaysSortedByDate) {
+  let temperatureDaysSortedByDate
+  let maxBreakInBleeding
+
+  if (!opts) {
     // we only want to require (and run) the db module when not running the tests
     bleedingDaysSortedByDate = require('../db').bleedingDaysSortedByDate
+    temperatureDaysSortedByDate = require('../db').temperatureDaysSortedByDate
+    maxBreakInBleeding = 1
   } else {
-    bleedingDaysSortedByDate = opts.bleedingDaysSortedByDate
+    bleedingDaysSortedByDate = opts.bleedingDaysSortedByDate || []
+    temperatureDaysSortedByDate = opts.temperatureDaysSortedByDate || []
+    maxBreakInBleeding = opts.maxBreakInBleeding || 1
   }
-  const maxBreakInBleeding = opts.maxBreakInBleeding || 1
 
   function getLastMensesStart(targetDateString) {
     const targetDate = LocalDate.parse(targetDateString)
@@ -53,13 +58,18 @@ export default function config(opts = {}) {
     return diffInDays + 1
   }
 
-  function getPreviousDaysInCycle() {
-    return []
+  function getPreviousTemperaturesInCycle(targetDateString, lastMensesStart) {
+    const startIndex = temperatureDaysSortedByDate.findIndex(day => day.date <= targetDateString)
+    const previousTemperaturesInCycle = temperatureDaysSortedByDate.slice(startIndex)
+    const endIndex = previousTemperaturesInCycle.findIndex(day => day.date < lastMensesStart.date)
+    return previousTemperaturesInCycle
+      .slice(0, endIndex)
+      .map(day => day.temperature.value)
   }
 
   return {
     getCycleDayNumber,
     getLastMensesStart,
-    getPreviousDaysInCycle
+    getPreviousTemperaturesInCycle
   }
 }