const moment = require('moment-immutable')

const formatDate = (date) => moment(date).format('YYYY-MM-DD')
const parseDate = (string) => moment(string, 'YYYY-MM-DD')

const getWeeks = (n) => {
  const weeks = []
  for (let i = 0, week = moment(moment.now()).startOf('week'); i < n; i++, week = week.add(-1, 'week')) {
    weeks[i] = week
  }
  return weeks
}

module.exports = {
  getWeeks,
  formatDate,
  parseDate
}