Detect pre- and postovulatory phase with no previous higher measurement

2018-07-10 10:56:33 +02:00
parent 77ad491d30
commit 0179c4588e
2 changed files with 157 additions and 62 deletions
@@ -1,33 +1,58 @@
 import getTemperatureShift from './temperature'
 import getMucusShift from './mucus'

-export default function (cycleDays) {
-  const assumeFertileStatus = { assumeFertility: true }
-  // TODO second phase calculation
-  if (cycleDays.length) assumeFertileStatus.phases = [
-    {
-      startDate: cycleDays[0].date,
-      startTime: '00:00'
+export default function ({ cycle, previousCycle }) {
+  // TODO check for basic stuff, throw if nonexistent
+  const status = {
+    assumeFertility: true,
+    phases: {
+      periOvulatory: {
+        start: {
+          date: null,
+          time: '00:00'
+        },
+        cycleDays: null
+      }
+    }
+  }
+
+  // if there was no first higher measurement in the previous cycle,
+  // no infertile preovulatory phase may be assumed
+
+  if (getTemperatureShift(previousCycle).detected) {
+    // add preOvulatory phase
+  } else {
+    const first = cycle[0]
+    status.phases.periOvulatory.start.date = first.date
+    status.phases.periOvulatory.cycleDays = [...cycle]
+  }
+
+  const temperatureShift = getTemperatureShift(cycle)
+  if (!temperatureShift.detected) return status
+
+  const tempEvalEndIndex = cycle.indexOf(temperatureShift.evaluationCompleteDay)
+  const mucusShift = getMucusShift(cycle, tempEvalEndIndex)
+  if (!mucusShift.detected) return status
+
+  const periOvulatoryEnd =
+    temperatureShift.evaluationCompleteDay.date > mucusShift.evaluationCompleteDay.date ?
+      temperatureShift.evaluationCompleteDay : mucusShift.evaluationCompleteDay
+
+  const prevPeriOvulatoryDays = status.phases.periOvulatory.cycleDays
+  const periOvulatoryEndIndex = prevPeriOvulatoryDays.indexOf(periOvulatoryEnd)
+
+  status.phases.postOvulatory = {
+    start: {
+      date: periOvulatoryEnd.date,
+      time: '18:00'
    },
-    'TODO'
-  ]
-
-  const temperatureShift = getTemperatureShift(cycleDays)
-  if (!temperatureShift.detected) return assumeFertileStatus
-
-  const tempEvalEndIndex = cycleDays.indexOf(temperatureShift.evaluationCompleteDay)
-  const mucusShift = getMucusShift(cycleDays, tempEvalEndIndex)
-  if (!mucusShift.detected) return assumeFertileStatus
-
-  const phase2 = {
-    startDate: temperatureShift.evaluationCompleteDay.date,
-    startTime: '18:00'
+    cycleDays: prevPeriOvulatoryDays.slice(periOvulatoryEndIndex)
  }

-  return {
-    assumeFertility: false,
-    temperatureShift,
-    mucusShift,
-    phases: assumeFertileStatus.phases.concat(phase2)
-  }
+  status.phases.periOvulatory.cycleDays = prevPeriOvulatoryDays.slice(0, periOvulatoryEndIndex + 1)
+
+  status.mucusShift = mucusShift
+  status.temperatureShift = temperatureShift
+
+  return status
 }