@procraft/widget-order/src/utils.ts

Order widget for landing

import moment, { Moment } from 'moment'
type DateTime = Moment | Date | string

export const roundByStep = (v: number, s = 1.0) => {
  const inv = 1.0 / s
  return Math.round(v * inv) / inv
}

export const roundStd = (num: number, decimalPlaces: number) => {
  const p = Math.pow(10, decimalPlaces)
  const e = Number.EPSILON * num * p

  return Math.round(num * p + e) / p
}

export const getCurrencyPrefix = (currency: string) => {
  switch (currency) {
    case 'USD':
      return '$'
    default:
      return ''
  }
}

export const getCurrencySuffix = (currency: string) => {
  switch (currency) {
    case 'RUB':
      return ' ₽'
    case 'USD':
      return ''
    case 'KZT':
      return ' ₸'
    case 'UAH':
      return ' ₴'
    default:
      return `\u202F${currency}`
  }
}

export type DateOptionalTimeReplacement = '00:00' | '23:59'

export function isNowYear(dateMoment: DateTime | null): boolean {
  if (dateMoment) {
    dateMoment = moment(dateMoment)
    return moment().year() === dateMoment.year()
  } else {
    return false
  }
}

/**
 * Returns date in format like "September 11" or "11 Сентября"
 */
export function formatDate(dateMoment: DateTime | null): string {
  if (dateMoment) {
    dateMoment = moment(dateMoment)

    if (!isNowYear(dateMoment)) {
      return dateMoment.format('D MMMM YYYY')
    } else {
      return dateMoment.format('D MMMM')
    }
  } else {
    return ''
  }
}

export function hasTime(
  dateMoment: Moment,
  optionalTimeReplacement: DateOptionalTimeReplacement = '00:00'
): boolean {
  if (optionalTimeReplacement == '23:59') {
    return !(dateMoment.hours() === 23 && dateMoment.minutes() === 59)
  } else {
    return dateMoment.hours() * 60 + dateMoment.minutes() > 0
  }
}

export function formatTimeHoursMinutes(dateMoment: DateTime | null): string {
  if (dateMoment) {
    return moment(dateMoment).format('HH:mm')
  } else {
    return ''
  }
}

export function formatDateOptionalTime(
  dateMoment: DateTime | null,
  separator = ' в ',
  optionalTimeReplacement: DateOptionalTimeReplacement = '00:00'
): string {
  if (dateMoment) {
    const timestamp = moment(dateMoment)

    if (hasTime(timestamp, optionalTimeReplacement)) {
      return `${formatDate(timestamp)}${separator}${formatTimeHoursMinutes(
        timestamp
      )}`
    } else {
      return formatDate(timestamp)
    }
  } else {
    return ''
  }
}