emelko
42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
export default function (cycleDays, tempEvalEndIndex) {
|
|
const cervixDays = cycleDays.filter(day => day.cervix && !day.cervix.exclude)
|
|
|
|
for (let i = 0; i < cervixDays.length; i++) {
|
|
const day = cervixDays[i]
|
|
if (isClosedAndHard(day.cervix)) continue
|
|
// the three following days must be with closed and hard cervix
|
|
// AND no other cervix value may occur until temperature evaluation has
|
|
// been completed
|
|
const threeFollowingDays = cervixDays.slice(i + 1, i + 4)
|
|
if (threeFollowingDays.length < 3) continue
|
|
|
|
const fertileCervixOccursIn3FollowingDays = threeFollowingDays.some(day => {
|
|
return !isClosedAndHard(day.cervix)
|
|
})
|
|
if (fertileCervixOccursIn3FollowingDays) continue
|
|
|
|
const cycleDayIndex = cycleDays.indexOf(day)
|
|
const relevantDays = cycleDays
|
|
.slice(cycleDayIndex + 1, tempEvalEndIndex + 1)
|
|
.filter(day => day.cervix && !day.cervix.exclude)
|
|
|
|
const onlyClosedAndHardUntilEndOfTempEval = relevantDays.every(day => {
|
|
return isClosedAndHard(day.cervix)
|
|
})
|
|
|
|
if (onlyClosedAndHardUntilEndOfTempEval) {
|
|
return {
|
|
detected: true,
|
|
cervixPeak: day,
|
|
evaluationCompleteDay: threeFollowingDays[threeFollowingDays.length - 1]
|
|
}
|
|
}
|
|
}
|
|
|
|
return { detected: false }
|
|
}
|
|
|
|
function isClosedAndHard (cervixValue) {
|
|
return cervixValue.isClosed && cervixValue.isHard
|
|
}
|