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Better prediction of next menstruation (#20)
* Added jest * Refactored predictions and added test
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|---|---|---|
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| const babelOptions = { | ||
| presets: ["babel-preset-gatsby"], | ||
| } | ||
| module.exports = require("babel-jest").createTransformer(babelOptions) |
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|---|---|---|
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| module.exports = { | ||
| transform: { | ||
| "^.+\\.jsx?$": `<rootDir>/jest-preprocess.js`, | ||
| }, | ||
| moduleNameMapper: { | ||
| ".+\\.(css|styl|less|sass|scss)$": `identity-obj-proxy`, | ||
| ".+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": `<rootDir>/__mocks__/file-mock.js`, | ||
| }, | ||
| testPathIgnorePatterns: [`node_modules`, `.cache`, `public`], | ||
| transformIgnorePatterns: [`node_modules/(?!(gatsby)/)`], | ||
| globals: { | ||
| __PATH_PREFIX__: ``, | ||
| }, | ||
| testURL: `http://localhost`, | ||
| setupFiles: [`<rootDir>/loadershim.js`], | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| import useCycle from "./useCycle" | ||
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| export default useCycle |
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| import { useEffect } from "react" | ||
| import { analyzeEntries, daysBetweenDates, addDaysToDate } from "./utils" | ||
|
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| import { useStore } from "../store" | ||
| import useEntries from "../useEntries" | ||
| import useSettings from "../useSettings" | ||
|
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| const useCycle = () => { | ||
| const [{ cycle }, setState] = useStore() | ||
| const [{ entriesByDate }] = useEntries() | ||
| const [{ menstruationSettings }] = useSettings() | ||
|
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| const updateCycle = (newCycle) => { | ||
| setState((state) => ({ | ||
| ...state, | ||
| cycle: { | ||
| ...state.cycle, | ||
| ...newCycle, | ||
| }, | ||
| })) | ||
| } | ||
|
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| const getCycleValue = (key) => { | ||
| if (!cycle.hasOwnProperty(key)) { | ||
| console.warn(`No ${key} on cycle slice of state`) | ||
| } | ||
| return cycle[key] | ||
| } | ||
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| const getCurrentStartDate = () => { | ||
| const startDates = getCycleValue("startDates") | ||
| if (startDates.length > 0) { | ||
| return startDates[0] | ||
| } | ||
| } | ||
|
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| const getNextStartDate = () => { | ||
| const currentStartDate = getCurrentStartDate() | ||
| const averageLength = getCycleValue("averageLength") | ||
| if (averageLength && currentStartDate) { | ||
| return addDaysToDate(currentStartDate, averageLength) | ||
| } | ||
| } | ||
|
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| const getCurrentDayInCycle = (date) => { | ||
| const currentStartDate = getCurrentStartDate() | ||
| if (currentStartDate) { | ||
| return daysBetweenDates(date, currentStartDate) + 1 | ||
| } | ||
| } | ||
|
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| useEffect(() => { | ||
| const tag = menstruationSettings.tag | ||
| const averageLength = cycle.averageLength | ||
| const newCycle = analyzeEntries({ entriesByDate, tag, averageLength }) | ||
| updateCycle(newCycle) | ||
| console.log(newCycle) | ||
| }, [entriesByDate, menstruationSettings.tag]) | ||
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| return [ | ||
| { | ||
| startDates: getCycleValue("startDates"), | ||
| currentStartDate: getCurrentStartDate(), | ||
| nextStartDate: getNextStartDate(), | ||
| averageLength: getCycleValue("averageLength"), | ||
| tags: getCycleValue("tags"), | ||
| }, | ||
| { | ||
| getCurrentDayInCycle, | ||
| }, | ||
| ] | ||
| } | ||
|
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| export default useCycle |
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| import { values, sum } from "lodash" | ||
| import { differenceInDays, addDays, format } from "date-fns" | ||
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| const getLastInArray = (array) => { | ||
| const index = array.length > 0 ? array.length - 1 : 0 | ||
| return array[index] | ||
| } | ||
|
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| const replaceLastItemInArray = (array, item) => { | ||
| const index = array.length > 0 ? array.length - 1 : 0 | ||
| array[index] = item | ||
| } | ||
|
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| export const daysBetweenDates = (dateA, dateB) => { | ||
| if (!(dateA instanceof Date)) { | ||
| dateA = new Date(dateA) | ||
| } | ||
| if (!(dateB instanceof Date)) { | ||
| dateB = new Date(dateB) | ||
| } | ||
|
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| if (isNaN(dateA.valueOf()) || isNaN(dateB.valueOf())) return 0 | ||
|
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| return Math.abs(differenceInDays(dateA, dateB)) | ||
| } | ||
|
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| export const addDaysToDate = (date, days) => { | ||
| if (!(date instanceof Date)) { | ||
| date = new Date(date) | ||
| } | ||
|
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| if (isNaN(date.valueOf())) return | ||
|
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| const newDate = addDays(date, days) | ||
| return format(newDate, "yyyy-MM-dd") | ||
| } | ||
|
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| const entryHasTag = (entry, tag) => { | ||
| return entry.tags.includes(tag) | ||
| } | ||
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| export const analyzeEntries = ({ entriesByDate, tag }) => { | ||
| const sortedEntries = values(entriesByDate).sort((a, b) => | ||
| a.date > b.date ? -1 : 1 | ||
| ) | ||
|
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| const startDates = [] | ||
| const cycleLengths = [] | ||
| let averageLength = undefined | ||
|
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| for (let entry of sortedEntries) { | ||
| if (entryHasTag(entry, tag)) { | ||
| const lastStartDate = getLastInArray(startDates) | ||
| let difference = daysBetweenDates(entry.date, lastStartDate) | ||
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| if (difference >= 14) { | ||
| startDates.push(entry.date) | ||
| cycleLengths.push(difference) | ||
| } else { | ||
| replaceLastItemInArray(startDates, entry.date) | ||
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| if (difference > 0 && cycleLengths.length > 0) { | ||
| difference = getLastInArray(cycleLengths) + difference | ||
| replaceLastItemInArray(cycleLengths, difference) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| if (cycleLengths.length > 0) { | ||
| averageLength = sum(cycleLengths) / cycleLengths.length | ||
| } | ||
|
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| return { | ||
| startDates, | ||
| averageLength, | ||
| tags: {}, | ||
| } | ||
| } |
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