<script setup lang="ts">
import { ref, computed } from 'vue'
import { Calendar } from '@/components/ui/calendar'
import { Button } from '@/components/ui/button'
import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover'
import { CalendarIcon } from 'lucide-vue-next'
import { cn } from '@/lib/utils'

interface Props {
  modelValue?: Date | string | null
  placeholder?: string
  disabled?: boolean
  format?: string
}

const props = withDefaults(defineProps<Props>(), {
  placeholder: 'Pick a date',
  format: 'PPP',
})

const emit = defineEmits<{
  'update:modelValue': [value: Date | null]
}>()

const value = computed({
  get: () => {
    if (!props.modelValue) return undefined
    return props.modelValue instanceof Date ? props.modelValue : new Date(props.modelValue)
  },
  set: (date) => {
    emit('update:modelValue', date || null)
  },
})

const formatDate = (date: Date | undefined) => {
  if (!date) return props.placeholder
  return date.toLocaleDateString('en-US', {
    year: 'numeric',
    month: 'long',
    day: 'numeric',
  })
}
</script>

<template>
  <Popover>
    <PopoverTrigger as-child>
      <Button
        variant="outline"
        :class="cn(
          'w-full justify-start text-left font-normal',
          !value && 'text-muted-foreground'
        )"
        :disabled="disabled"
      >
        <CalendarIcon class="mr-2 h-4 w-4" />
        {{ formatDate(value) }}
      </Button>
    </PopoverTrigger>
    <PopoverContent class="w-auto p-0">
      <Calendar v-model="value" initial-focus />
    </PopoverContent>
  </Popover>
</template>
