import moment from 'moment'
import { ref } from 'vue'

moment.locale('zh-cn', {
  months: '一月_二月_三月_四月_五月_六月_七月_八月_九月_十月_十一月_十二月'.split('_'),
  monthsShort: '1月_2月_3月_4月_5月_6月_7月_8月_9月_10月_11月_12月'.split('_'),
  weekdays: '星期日_星期一_星期二_星期三_星期四_星期五_星期六'.split('_'),
  weekdaysShort: '周日_周一_周二_周三_周四_周五_周六'.split('_'),
  weekdaysMin: '日_一_二_三_四_五_六'.split('_'),
  longDateFormat: {
    LT: 'HH:mm',
    LTS: 'HH:mm:ss',
    L: 'YYYY-MM-DD',
    LL: 'YYYY年MM月DD日',
    LLL: 'YYYY年MM月DD日Ah点mm分',
    LLLL: 'YYYY年MM月DD日ddddAh点mm分',
    l: 'YYYY-M-D',
    ll: 'YYYY年M月D日',
    lll: 'YYYY年M月D日 HH:mm',
    llll: 'YYYY年M月D日dddd HH:mm'
  },
  meridiemParse: /凌晨|早上|上午|中午|下午|晚上/,
  meridiemHour: function(hour, meridiem) {
    if (hour === 12) {
      hour = 0
    }
    if (meridiem === '凌晨' || meridiem === '早上' || meridiem === '上午') {
      return hour
    } else if (meridiem === '下午' || meridiem === '晚上') {
      return hour + 12
    } else {
      // '中午'
      return hour >= 11 ? hour : hour + 12
    }
  },
  meridiem: function(hour, minute, isLower) {
    const hm = hour * 100 + minute
    if (hm < 600) {
      return '凌晨'
    } else if (hm < 900) {
      return '早上'
    } else if (hm < 1130) {
      return '上午'
    } else if (hm < 1230) {
      return '中午'
    } else if (hm < 1800) {
      return '下午'
    } else {
      return '晚上'
    }
  },
  calendar: {
    sameDay: '[今天]LT',
    nextDay: '[明天]LT',
    nextWeek: '[下]ddddLT',
    lastDay: '[昨天]LT',
    lastWeek: '[上]ddddLT',
    sameElse: 'L'
  },
  dayOfMonthOrdinalParse: /\d{1,2}(日|月|周)/,
  ordinal: function(number, period) {
    switch (period) {
    case 'd':
    case 'D':
    case 'DDD':
      return number + '日'
    case 'M':
      return number + '月'
    case 'w':
    case 'W':
      return number + '周'
    default:
      return number
    }
  },
  relativeTime: {
    future: '%s内',
    past: '%s前',
    s: '几秒',
    ss: '%d秒',
    m: '1分钟',
    mm: '%d分钟',
    h: '1小时',
    hh: '%d小时',
    d: '1天',
    dd: '%d天',
    M: '1个月',
    MM: '%d个月',
    y: '1年',
    yy: '%d年'
  },
  week: {
    // GB/T 7408-1994《数据元和交换格式·信息交换·日期和时间表示法》与ISO 8601:1988等效
    dow: 1, // Monday is the first day of the week.
    doy: 4 // The week that contains Jan 4th is the first week of the year.
  }
})

export function useTime() {
  const time = ref(null)
  const date = ref(null)
  const weekly = ref(null)
  setInterval(() => {
    time.value = moment().format('HH:mm:ss')
    date.value = moment().format('YYYY/MM/DD')
    weekly.value = moment().format('dddd')
  }, 1000)
  return {
    time,
    date,
    weekly,
  }
}