jxlcpy_base_daoshi_vue_ts/src/composables/useDay.ts

import { computed, ref } from 'vue'
import { useStore } from '@/store'
import { formatDay, Format } from '@/utils/utils'
import { Language } from '@/store/state'

type Keys = {
  // eslint-disable-next-line no-unused-vars
  [K in Language]: string[]
}

export const useDay = () => {
  const days: Keys = {
    zh: ['星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六'],
    en: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
    tw: ['星期日', '星期壹', '星期二', '星期三', '星期四', '星期五', '星期六']
  }

  const date = ref(new Date())
  const store = useStore()
  const language = computed(() => store.$state.language)

  const currentWeek = () => days[language.value][date.value.getDay()]

  const whichWeek = computed(currentWeek)

  return {
    whichWeek,
    formatDayHandler(time: Format) {
      return formatDay(date.value, time)
    }
  }
}