Moves out home helpers from the component

2020-02-27 10:23:01 +01:00
parent 0a86f38472
commit d5b1944988
2 changed files with 78 additions and 65 deletions
@@ -0,0 +1,64 @@
+import { ChronoUnit, LocalDate } from 'js-joda'
+
+import { formatDateForShortText } from './format-date'
+
+import {
+  home as labels,
+  bleedingPrediction as predictLabels,
+} from '../../i18n/en/labels'
+
+function getTimes(prediction) {
+  const todayDate = LocalDate.now()
+  const predictedBleedingStart = LocalDate.parse(prediction[0][0])
+  /* the range of predicted bleeding days can be either 3 or 5 */
+  const predictedBleedingEnd =
+    LocalDate.parse(prediction[0][ prediction[0].length - 1 ])
+  const daysToEnd = todayDate.until(predictedBleedingEnd, ChronoUnit.DAYS)
+  return { todayDate, predictedBleedingStart, predictedBleedingEnd, daysToEnd }
+}
+
+export function determinePredictionText(bleedingPrediction) {
+  if (!bleedingPrediction.length) return predictLabels.noPrediction
+  const {
+    todayDate,
+    predictedBleedingStart,
+    predictedBleedingEnd,
+    daysToEnd
+  } = getTimes(bleedingPrediction)
+  if (todayDate.isBefore(predictedBleedingStart)) {
+    return predictLabels.predictionInFuture(
+      todayDate.until(predictedBleedingStart, ChronoUnit.DAYS),
+      todayDate.until(predictedBleedingEnd, ChronoUnit.DAYS)
+    )
+  }
+  if (todayDate.isAfter(predictedBleedingEnd)) {
+    return predictLabels.predictionInPast(
+      formatDateForShortText(predictedBleedingStart),
+      formatDateForShortText(predictedBleedingEnd)
+    )
+  }
+  if (daysToEnd === 0) {
+    return predictLabels.predictionStartedNoDaysLeft
+  } else if (daysToEnd === 1) {
+    return predictLabels.predictionStarted1DayLeft
+  } else {
+    return predictLabels.predictionStartedXDaysLeft(daysToEnd)
+  }
+}
+
+export function getBleedingPredictionRange(prediction) {
+  if (!prediction.length) return labels.unknown
+  const {
+    todayDate,
+    predictedBleedingStart,
+    predictedBleedingEnd,
+    daysToEnd
+  } = getTimes(prediction)
+  if (todayDate.isBefore(predictedBleedingStart)) {
+    return `${todayDate.until(predictedBleedingStart, ChronoUnit.DAYS)}-${todayDate.until(predictedBleedingEnd, ChronoUnit.DAYS)}`
+  }
+  if (todayDate.isAfter(predictedBleedingEnd)) {
+    return labels.unknown
+  }
+  return (daysToEnd === 0 ? '0' : `0 - ${daysToEnd}`)
+}