import { type DateValue, fromAbsolute, toCalendarDate } from '@internationalized/date'

export function getTimeZone() {
  if (typeof Intl === 'undefined')
    return 'Etc/UTC'

  return Intl.DateTimeFormat().resolvedOptions().timeZone
}

export function getLocale() {
  if (typeof Intl === 'undefined')
    return navigator.language

  return Intl.DateTimeFormat().resolvedOptions().locale
}

export function shortDate(unix = 0) {
  const shortDate = new Intl.DateTimeFormat(undefined, {
    dateStyle: 'short',
  })
  return shortDate.format(unix * 1000)
}

export function longDate(unix = 0) {
  return new Date(unix * 1000).toLocaleString()
}

export function date2unix(dateValue: DateValue | Date, type: string) {
  const date = dateValue instanceof Date ? dateValue : dateValue.toDate(getTimeZone())
  if (type === 'start')
    return Math.floor(date.setHours(0, 0, 0) / 1000)

  if (type === 'end')
    return Math.floor(date.setHours(23, 59, 59) / 1000)

  return Math.floor(date.getTime() / 1000)
}

export function unix2date(unix: number) {
  return toCalendarDate(fromAbsolute(unix * 1000, getTimeZone()))
}