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FunctionProject/api/assets/functions/main/calculateAge.js
2020-08-03 12:04:07 +02:00

51 lines
2.0 KiB
JavaScript

const errorHandling = require('../../utils/errorHandling')
const moment = require('moment')
const { requiredFields } = require('../../config/errors')
function calculateAge (currentDate, { birthDateDay, birthDateMonth, birthDateYear }) {
const day = currentDate.getDate()
const month = currentDate.getMonth()
const currentDateMoment = moment([currentDate.getFullYear(), month, day])
const birthDateMoment = moment([birthDateYear, birthDateMonth, birthDateDay])
// Calcule l'âge - Moment.js
const ageYears = currentDateMoment.diff(birthDateMoment, 'year')
birthDateMoment.add(ageYears, 'years')
const ageMonths = currentDateMoment.diff(birthDateMoment, 'months')
birthDateMoment.add(ageMonths, 'months')
const ageDays = currentDateMoment.diff(birthDateMoment, 'days')
const isBirthday = (birthDateDay === day && birthDateMonth === month)
return { ageYears, ageMonths, ageDays, isBirthday }
}
/* OUTPUTS */
module.exports = ({ res, next }, argsObject) => {
const { birthDate } = argsObject
// S'il n'y a pas les champs obligatoire
if (!(birthDate)) {
return errorHandling(next, requiredFields)
}
const birthDateDay = parseInt(birthDate.substring(0, 2))
const birthDateMonth = parseInt((birthDate.substring(3, 5)) - 1)
const birthDateYear = parseInt(birthDate.substring(6, 10))
// Si ce n'est pas une date valide
const currentDate = new Date()
const birthDateObject = new Date(birthDateYear, birthDateMonth, birthDateDay)
const result = calculateAge(currentDate, { birthDateYear, birthDateMonth, birthDateDay })
if ((currentDate < birthDateObject) || isNaN(result.ageYears)) {
return errorHandling(next, { message: 'Veuillez rentré une date valide...', statusCode: 400 })
}
let resultHTML
if (result.isBirthday) {
resultHTML = `<p>Vous avez ${result.ageYears} ans. Joyeux Anniversaire! 🥳</p>`
} else {
resultHTML = `<p>Vous avez ${result.ageYears} ans, ${result.ageMonths} mois et ${result.ageDays} jour(s).</p>`
}
return res.status(200).json({ ...result, resultHTML })
}