const makeArray = (length: number) =>
  Array.from(new Array(length), (_, i) => (i < 10 ? `0${i}` : `${i}`))

export const hours = makeArray(25)

export const minutes = makeArray(60)

export const isLegalTimeString = (time: string, onlyHour?: boolean) => {
  if (time.trim() === "") {
    return true
  }
  const strings = time.split(":")
  if (
    strings.length === 2 &&
    strings[0].length === 2 &&
    strings[1].length === 2 &&
    !isNaN(Number(strings[0])) &&
    !isNaN(Number(strings[1]))
  ) {
    const hour = parseInt(strings[0], 10)
    const minute = parseInt(strings[1], 10)
    // 整点选择 onlyHour 时判断逻辑不一样
    if (onlyHour) {
      return hour > -1 && hour < 25 && minute === 0
    }
    return hour > -1 && hour < 25 && minute > -1 && minute < 60
  }
  return false
}

export const extractHourAndMinuteFromTime = (time?: string | null) => {
  if (!time) {
    return {
      hour: null,
      minute: null,
    }
  }
  const [hour, minute] = time.split(":")
  return {
    hour: hour || null,
    minute: minute || null,
  }
}

// t1 是否在 t2 后
export const isTimeAfter = (t1?: string | null, t2?: string | null) => {
  if (!t1 || !isLegalTimeString(t1) || !t2 || !isLegalTimeString(t2)) {
    return false
  }
  const { hour: t1Hour, minute: t1Minute } = extractHourAndMinuteFromTime(t1)
  const { hour: t2Hour, minute: t2Minute } = extractHourAndMinuteFromTime(t2)
  if (t1Hour && t2Hour && parseInt(t1Hour, 10) !== parseInt(t2Hour, 10)) {
    return t1Hour > t2Hour
  }
  return t1Minute && t2Minute && parseInt(t1Minute, 10) > parseInt(t2Minute, 10)
}

// t1 是否在 t2 前
export const isTimeBefore = (t1?: string | null, t2?: string | null) => {
  if (!t1 || !isLegalTimeString(t1) || !t2 || !isLegalTimeString(t2)) {
    return false
  }
  const { hour: t1Hour, minute: t1Minute } = extractHourAndMinuteFromTime(t1)
  const { hour: t2Hour, minute: t2Minute } = extractHourAndMinuteFromTime(t2)
  if (t1Hour && t2Hour && parseInt(t1Hour, 10) !== parseInt(t2Hour, 10)) {
    return t1Hour < t2Hour
  }
  return t1Minute && t2Minute && parseInt(t1Minute, 10) < parseInt(t2Minute, 10)
}