BYW-VoiceHub/app/components/Admin/AdminMultiDatePicker.vue

<template>
  <div class="relative bg-zinc-900/50 border border-zinc-800/50 rounded-2xl p-1 overflow-hidden">
    <!-- 横向日期选择条 -->
    <div class="flex items-center" @touchstart.stop>
      <button
        :disabled="isFirstDateVisible"
        class="p-2 text-zinc-500 hover:text-zinc-300 disabled:opacity-30 transition-colors shrink-0"
        @click="scrollDates('left')"
      >
        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><polyline points="15,18 9,12 15,6" /></svg>
      </button>

      <div
        ref="dateSelector"
        class="flex-1 flex overflow-x-auto scrollbar-hide gap-2 px-2 py-1 scroll-smooth overscroll-x-contain shrink-0"
        style="overscroll-behavior-x: contain; touch-action: pan-x"
        @wheel="handleWheel"
        @scroll="handleScroll"
      >
        <button
          v-for="date in availableDates"
          :key="date.value"
          :data-date="date.value"
          :class="[
            'flex flex-col items-center justify-center min-w-[64px] h-16 rounded-lg transition-all duration-200 border shrink-0 relative',
            modelValue.includes(date.value)
              ? 'bg-blue-600 border-blue-500 text-white shadow-lg shadow-blue-900/20'
              : 'bg-zinc-900 border-zinc-800 text-zinc-500 hover:bg-zinc-800 hover:text-zinc-300 hover:border-zinc-700',
            date.isToday && !modelValue.includes(date.value) ? 'ring-1 ring-emerald-500/50' : ''
          ]"
          @click="toggleDate(date.value, $event)"
        >
          <span class="text-[10px] font-bold uppercase tracking-wider opacity-80">{{ date.weekday }}</span>
          <span class="text-lg font-black leading-none my-0.5">{{ date.day }}</span>
          <span class="text-[9px] font-bold opacity-60">{{ date.month }}月</span>
          <div
            v-if="modelValue.includes(date.value)"
            class="absolute top-1 right-1 w-3.5 h-3.5 rounded-full bg-white text-blue-600 flex items-center justify-center"
          >
            <svg class="w-2.5 h-2.5" fill="none" stroke="currentColor" stroke-width="3" viewBox="0 0 24 24"><polyline points="20,6 9,17 4,12" /></svg>
          </div>
        </button>
      </div>

      <button
        :disabled="isLastDateVisible"
        class="p-2 text-zinc-500 hover:text-zinc-300 disabled:opacity-30 transition-colors shrink-0"
        @click="scrollDates('right')"
      >
        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><polyline points="9,18 15,12 9,6" /></svg>
      </button>

      <div class="flex items-center border-l border-zinc-800 ml-1 pl-1 shrink-0">
        <button class="p-2 text-zinc-500 hover:text-emerald-400 transition-colors" title="跳转到今天" @click="scrollToToday">
          <CircleDot class="w-5 h-5" />
        </button>
        <button
          class="p-2 text-zinc-500 hover:text-blue-400 transition-colors"
          :class="{ 'text-blue-400': showCalendar }"
          title="打开月历及批量选择"
          @click="toggleCalendar"
        >
          <CalendarIcon class="w-5 h-5" />
        </button>
      </div>
    </div>

    <!-- 扩展面板：快捷批量 + 月历 -->
    <Transition name="expand">
      <div v-if="showCalendar" class="border-t border-zinc-800/60 mt-1 pt-2 px-2 pb-2 space-y-3">
        <!-- 批量操作按钮 -->
        <div class="flex flex-wrap items-center gap-2">
          <span class="text-[10px] font-black text-zinc-600 uppercase tracking-widest px-1">批量选择</span>
          <button
            v-for="b in batchActions"
            :key="b.label"
            class="px-2.5 py-1.5 rounded-lg text-[11px] font-bold bg-zinc-900 border border-zinc-800 text-zinc-400 hover:text-zinc-200 hover:border-zinc-700 transition-all"
            @click="applyBatchAction(b.action)"
          >
            {{ b.label }}
          </button>
          <div class="w-px h-4 bg-zinc-800 mx-1" />
          <button
            class="px-2.5 py-1.5 rounded-lg text-[11px] font-bold bg-red-500/10 border border-red-500/20 text-red-400 hover:text-red-300 hover:bg-red-500/15 transition-all"
            @click="clearAll"
          >
            清空所有
          </button>
          <div class="ml-auto flex items-center gap-2 text-[11px] font-bold text-zinc-500">
            <Info :size="12" />
            <span>已选 {{ modelValue.length }} 天</span>
            <span class="text-zinc-700">·</span>
            <span class="text-zinc-600">按住 Shift 点选可范围选择</span>
          </div>
        </div>

        <!-- 月历网格 -->
        <div class="bg-zinc-950/60 border border-zinc-800 rounded-xl p-3">
          <div class="flex items-center justify-between mb-3 px-1">
            <button
              class="p-1.5 text-zinc-500 hover:text-zinc-200 rounded-lg hover:bg-zinc-800 transition-colors"
              @click="calendarMonth--"
            >
              <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><polyline points="15,18 9,12 15,6" /></svg>
            </button>
            <div class="flex items-center gap-2">
              <span class="text-sm font-black text-zinc-200">{{ calendarYear }}年</span>
              <select
                v-model="calendarMonth"
                class="bg-zinc-900 border border-zinc-800 rounded-lg px-2 py-1 text-sm font-black text-zinc-200 focus:outline-none focus:border-blue-500/50"
              >
                <option v-for="m in 12" :key="m" :value="m - 1">{{ m }}月</option>
              </select>
            </div>
            <div class="flex items-center gap-1">
              <button
                class="p-1.5 text-zinc-500 hover:text-zinc-200 rounded-lg hover:bg-zinc-800 transition-colors"
                @click="goToday"
                title="回到本月"
              >
                <CircleDot class="w-3.5 h-3.5" />
              </button>
              <button
                class="p-1.5 text-zinc-500 hover:text-zinc-200 rounded-lg hover:bg-zinc-800 transition-colors"
                @click="calendarMonth++"
              >
                <svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><polyline points="9,18 15,12 9,6" /></svg>
              </button>
            </div>
          </div>

          <div class="grid grid-cols-7 mb-1">
            <div
              v-for="w in weekdayNames"
              :key="w"
              class="text-center text-[10px] font-black text-zinc-600 uppercase tracking-widest py-1.5"
            >
              {{ w }}
            </div>
          </div>

          <div class="grid grid-cols-7 gap-1">
            <button
              v-for="(cell, idx) in calendarCells"
              :key="idx"
              :disabled="!cell.inMonth"
              :class="[
                'relative aspect-square rounded-lg flex items-center justify-center text-sm font-bold transition-all',
                !cell.inMonth ? 'text-zinc-800 cursor-default' : '',
                cell.inMonth && !isSelected(cell.dateStr) && !cell.isToday
                  ? 'text-zinc-400 hover:bg-zinc-800 hover:text-zinc-200' : '',
                cell.inMonth && !isSelected(cell.dateStr) && cell.isToday
                  ? 'text-emerald-400 ring-1 ring-emerald-500/40 hover:bg-zinc-800' : '',
                isSelected(cell.dateStr)
                  ? 'bg-blue-600 text-white shadow-lg shadow-blue-900/20' : '',
                cell.isRangeMiddle && !isSelected(cell.dateStr)
                  ? 'bg-blue-500/10 text-blue-300' : ''
              ]"
              @click="cell.inMonth && toggleDate(cell.dateStr, $event)"
            >
              {{ cell.day }}
              <svg
                v-if="isSelected(cell.dateStr)"
                class="absolute top-0.5 right-0.5 w-2.5 h-2.5 text-white"
                fill="currentColor"
                viewBox="0 0 24 24"
              >
                <path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z" />
              </svg>
            </button>
          </div>
        </div>
      </div>
    </Transition>
  </div>
</template>

<script setup>
import { ref, computed, onMounted, nextTick } from 'vue'
import { CircleDot, Calendar as CalendarIcon, Info } from '@lucide/vue'

const props = defineProps({
  modelValue: {
    type: Array,
    default: () => []
  }
})

const emit = defineEmits(['update:modelValue', 'change'])

const dateSelector = ref(null)
const isFirstDateVisible = ref(false)
const isLastDateVisible = ref(false)
const dateRange = ref({ start: -3, end: 38 })
const showCalendar = ref(false)
const lastClickedDate = ref('')

const pad = (n) => n.toString().padStart(2, '0')
const formatDateStr = (d) => `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}`
const addDays = (d, n) => { const x = new Date(d); x.setHours(0, 0, 0, 0); x.setDate(x.getDate() + n); return x }
const sameDay = (a, b) => a.getFullYear() === b.getFullYear() && a.getMonth() === b.getMonth() && a.getDate() === b.getDate()
const sortDates = (arr) => [...new Set(arr)].sort()

const today = new Date(); today.setHours(0, 0, 0, 0)
const calendarYear = ref(today.getFullYear())
const calendarMonth = ref(today.getMonth())

const weekdayNames = ['日', '一', '二', '三', '四', '五', '六']

const availableDates = computed(() => {
  const dates = []
  for (let i = dateRange.value.start; i <= dateRange.value.end; i++) {
    const date = addDays(today, i)
    dates.push({
      value: formatDateStr(date),
      day: date.getDate().toString().padStart(2, '0'),
      month: (date.getMonth() + 1).toString().padStart(2, '0'),
      weekday: weekdayNames[date.getDay()],
      isToday: i === 0
    })
  }
  return dates
})

const batchActions = [
  { label: '今天', action: 'today' },
  { label: '明天起7天', action: 'next7' },
  { label: '本周工作日', action: 'thisWeekWork' },
  { label: '本周全周', action: 'thisWeekAll' },
  { label: '下周工作日', action: 'nextWeekWork' },
  { label: '下周全周', action: 'nextWeekAll' },
  { label: '本月工作日', action: 'thisMonthWork' }
]

const calendarCells = computed(() => {
  const cells = []
  const firstDay = new Date(calendarYear.value, calendarMonth.value, 1)
  const startWeekday = firstDay.getDay()
  const startDate = addDays(firstDay, -startWeekday)
  for (let i = 0; i < 42; i++) {
    const d = addDays(startDate, i)
    cells.push({
      day: d.getDate(),
      dateStr: formatDateStr(d),
      inMonth: d.getMonth() === calendarMonth.value,
      isToday: sameDay(d, today)
    })
  }
  return cells
})

const isSelected = (d) => props.modelValue.includes(d)

const commitChange = (newArr) => {
  const sorted = sortDates(newArr)
  emit('update:modelValue', sorted)
  emit('change', sorted)
}

const toggleDate = (dateValue, event) => {
  const newValue = [...props.modelValue]

  if (event && event.shiftKey && lastClickedDate.value && !newValue.includes(dateValue)) {
    const a = new Date(lastClickedDate.value)
    const b = new Date(dateValue)
    const [s, e] = a < b ? [a, b] : [b, a]
    for (let d = new Date(s); d <= e; d.setDate(d.getDate() + 1)) {
      const ds = formatDateStr(d)
      if (!newValue.includes(ds)) newValue.push(ds)
    }
  } else {
    const index = newValue.indexOf(dateValue)
    if (index > -1) {
      newValue.splice(index, 1)
    } else {
      newValue.push(dateValue)
    }
    lastClickedDate.value = dateValue
  }

  commitChange(newValue)
}

const clearAll = () => commitChange([])

const applyBatchAction = (action) => {
  const t = new Date(); t.setHours(0, 0, 0, 0)
  const toAdd = []

  const pushRange = (start, end) => {
    for (let d = new Date(start); d <= end; d.setDate(d.getDate() + 1)) {
      toAdd.push(formatDateStr(d))
    }
  }

  const getWeekStart = (base) => {
    const r = new Date(base); r.setHours(0, 0, 0, 0)
    r.setDate(r.getDate() - r.getDay())
    return r
  }

  switch (action) {
    case 'today':
      toAdd.push(formatDateStr(t))
      break
    case 'next7':
      pushRange(addDays(t, 1), addDays(t, 7))
      break
    case 'thisWeekWork': {
      const wkStart = getWeekStart(t)
      for (let i = 1; i <= 5; i++) toAdd.push(formatDateStr(addDays(wkStart, i)))
      break
    }
    case 'thisWeekAll': {
      const wkStart = getWeekStart(t)
      pushRange(wkStart, addDays(wkStart, 6))
      break
    }
    case 'nextWeekWork': {
      const wkStart = addDays(getWeekStart(t), 7)
      for (let i = 1; i <= 5; i++) toAdd.push(formatDateStr(addDays(wkStart, i)))
      break
    }
    case 'nextWeekAll': {
      const wkStart = addDays(getWeekStart(t), 7)
      pushRange(wkStart, addDays(wkStart, 6))
      break
    }
    case 'thisMonthWork': {
      const ym = new Date(t.getFullYear(), t.getMonth(), 1)
      const end = new Date(t.getFullYear(), t.getMonth() + 1, 0)
      for (let d = new Date(ym); d <= end; d.setDate(d.getDate() + 1)) {
        if (d.getDay() >= 1 && d.getDay() <= 5) toAdd.push(formatDateStr(d))
      }
      break
    }
  }

  const merged = [...new Set([...props.modelValue, ...toAdd])]
  commitChange(merged)
}

const handleWheel = (event) => {
  event.preventDefault()
  if (!dateSelector.value) return
  const scrollAmount = 160
  const currentScroll = dateSelector.value.scrollLeft
  dateSelector.value.scrollTo({
    left: event.deltaY > 0 ? currentScroll + scrollAmount : currentScroll - scrollAmount,
    behavior: 'smooth'
  })
}

const scrollDates = (direction) => {
  if (!dateSelector.value) return
  const scrollAmount = 160
  const currentScroll = dateSelector.value.scrollLeft
  dateSelector.value.scrollTo({
    left: direction === 'right' ? currentScroll + scrollAmount : currentScroll - scrollAmount,
    behavior: 'smooth'
  })
}

const handleScroll = () => {
  if (!dateSelector.value) return
  const { scrollLeft, scrollWidth, clientWidth } = dateSelector.value
  if (scrollLeft < 100) {
    const oldScrollWidth = scrollWidth
    dateRange.value.start -= 5
    nextTick(() => {
      const newScrollWidth = dateSelector.value.scrollWidth
      dateSelector.value.scrollLeft += newScrollWidth - oldScrollWidth
    })
  }
  if (scrollWidth - scrollLeft - clientWidth < 100) {
    dateRange.value.end += 5
  }
}

const scrollToDateElement = (targetDate, behavior = 'smooth') => {
  if (!dateSelector.value || !targetDate) return
  const el = dateSelector.value.querySelector(`[data-date="${targetDate}"]`)
  if (!el) return
  const cw = dateSelector.value.clientWidth
  const target = el.offsetLeft - (cw - el.offsetWidth) / 2
  dateSelector.value.scrollTo({ left: target, behavior })
}

const scrollToToday = () => {
  if (dateRange.value.start > 0 || dateRange.value.end < 0) {
    dateRange.value.start = -3
    dateRange.value.end = 25
  }
  nextTick(() => scrollToDateElement(formatDateStr(today), 'smooth'))
}

const toggleCalendar = () => {
  showCalendar.value = !showCalendar.value
}

const goToday = () => {
  calendarYear.value = today.getFullYear()
  calendarMonth.value = today.getMonth()
}

watch(() => props.modelValue, (newVal) => {
  if (!newVal || !newVal.length) return
  nextTick(() => {
    // 跳到第一个 >= 今天的日期，否则跳第一个选中项
    const todayStr = formatDateStr(today)
    const target = newVal.find(d => d >= todayStr) || newVal[0]
    // 如果目标超出当前范围，扩展 range
    const diff0 = Math.round((new Date(target) - new Date(todayStr)) / 86400000)
    if (diff0 < dateRange.value.start || diff0 > dateRange.value.end) {
      dateRange.value.start = Math.min(dateRange.value.start, diff0 - 3)
      dateRange.value.end = Math.max(dateRange.value.end, diff0 + 5)
    }
    nextTick(() => scrollToDateElement(target, 'smooth'))
  })
})

onMounted(() => {
  if (props.modelValue && props.modelValue.length) {
    const todayStr = formatDateStr(today)
    const target = props.modelValue.find(d => d >= todayStr) || props.modelValue[0]
    const diff0 = Math.round((new Date(target) - new Date(todayStr)) / 86400000)
    if (diff0 < dateRange.value.start || diff0 > dateRange.value.end) {
      dateRange.value.start = Math.min(dateRange.value.start, diff0 - 3)
      dateRange.value.end = Math.max(dateRange.value.end, diff0 + 5)
    }
    nextTick(() => nextTick(() => scrollToDateElement(target, 'smooth')))
  } else {
    nextTick(() => scrollToToday())
  }
})
</script>

<style scoped>
.scrollbar-hide::-webkit-scrollbar { display: none; }
.scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }

.expand-enter-active, .expand-leave-active {
  transition: all 0.25s ease;
  overflow: hidden;
}
.expand-enter-from, .expand-leave-to {
  opacity: 0;
  max-height: 0;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  margin-top: 0 !important;
}
.expand-enter-to, .expand-leave-from {
  max-height: 800px;
}
</style>