Julia Friesel
92 lines
3.3 KiB
JavaScript
92 lines
3.3 KiB
JavaScript
import getTemperatureShift from './temperature'
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import getMucusShift from './mucus'
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import getPreOvulatoryPhase from './pre-ovulatory'
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import { LocalDate } from 'js-joda'
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export default function ({ cycle, previousCycle }) {
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throwIfArgsAreNotInRequiredFormat(cycle, previousCycle)
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const status = {
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assumeFertility: true,
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phases: {}
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}
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// if there was no first higher measurement in the previous cycle,
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// no infertile pre-ovulatory phase may be assumed
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if (getTemperatureShift(previousCycle).detected && !cycle[0].mucus) {
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status.phases.preOvulatory = getPreOvulatoryPhase(cycle)
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if (status.phases.preOvulatory.cycleDays.length === cycle.length) {
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status.assumeFertility = false
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return status
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}
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}
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status.phases.periOvulatory = {
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start: { date: null },
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cycleDays: []
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}
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const periPhase = status.phases.periOvulatory
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if (status.phases.preOvulatory) {
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const prePhase = status.phases.preOvulatory
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periPhase.start.date = LocalDate.parse(prePhase.end.date).plusDays(1).toString()
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const lastPreDay = prePhase.cycleDays[prePhase.cycleDays.length - 1]
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periPhase.cycleDays = cycle.slice(cycle.indexOf(lastPreDay) + 1)
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} else {
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periPhase.start.date = cycle[0].date
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periPhase.cycleDays = [...cycle]
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}
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const temperatureShift = getTemperatureShift(cycle)
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if (!temperatureShift.detected) return status
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const tempEvalEndIndex = cycle.indexOf(temperatureShift.evaluationCompleteDay)
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const mucusShift = getMucusShift(cycle, tempEvalEndIndex)
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if (!mucusShift.detected) return status
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const periOvulatoryEnd =
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temperatureShift.evaluationCompleteDay.date > mucusShift.evaluationCompleteDay.date ?
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temperatureShift.evaluationCompleteDay : mucusShift.evaluationCompleteDay
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const prevPeriOvulatoryDays = periPhase.cycleDays
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const periOvulatoryEndIndex = prevPeriOvulatoryDays.indexOf(periOvulatoryEnd)
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status.phases.postOvulatory = {
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start: {
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date: periOvulatoryEnd.date,
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time: '18:00'
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},
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cycleDays: prevPeriOvulatoryDays.slice(periOvulatoryEndIndex)
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}
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periPhase.cycleDays = prevPeriOvulatoryDays.slice(0, periOvulatoryEndIndex + 1)
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periPhase.end = status.phases.postOvulatory.start
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status.mucusShift = mucusShift
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status.temperatureShift = temperatureShift
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status.assumeFertility = false
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return status
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}
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function throwIfArgsAreNotInRequiredFormat(cycle, previousCycle) {
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if (!Array.isArray(cycle) || !cycle.length) throw new Error('Please provide all cycle days as array')
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if (!Array.isArray(previousCycle) || !previousCycle.length) throw new Error('Please provide previous cycle days as array')
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if (
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!cycle[0].bleeding || typeof cycle[0].bleeding.value != 'number' ||
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!previousCycle[0].bleeding || typeof previousCycle[0].bleeding.value != 'number'
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) throw new Error('Cycle must start with bleeding')
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if ([cycle, previousCycle].some(cycle => {
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return cycle.some(day => {
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if (!day.date) return true
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try {
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LocalDate.parse(day.date)
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} catch(err) {
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throw new Error('Please provide dates in ISO8601 format')
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}
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if (day.temperature && typeof day.temperature.value != 'number') return true
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if (day.mucus && typeof day.mucus.value != 'number') return true
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})
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})) throw new Error('Cycle days are not in correct format')
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} |