supabase/apps/design-system/registry/default/example/date-picker-with-range.tsx

'use client'

import { addDays, format } from 'date-fns'
import { Calendar as CalendarIcon } from 'lucide-react'
import * as React from 'react'
import { DateRange } from 'react-day-picker'

import { cn } from '@/lib/utils'
import {
  Button,
  Calendar,
  Popover_Shadcn_,
  PopoverContent_Shadcn_,
  PopoverTrigger_Shadcn_,
} from 'ui'

export default function DatePickerWithRange({ className }: React.HTMLAttributes<HTMLDivElement>) {
  const [date, setDate] = React.useState<DateRange | undefined>({
    from: new Date(2022, 0, 20),
    to: addDays(new Date(2022, 0, 20), 20),
  })

  return (
    <div className={cn('grid gap-2', className)}>
      <Popover_Shadcn_>
        <PopoverTrigger_Shadcn_ asChild>
          <Button
            id="date"
            type={'outline'}
            className={cn(
              'w-[300px] justify-start text-left font-normal',
              !date && 'text-muted-foreground'
            )}
            icon={<CalendarIcon className="h-4 w-4" />}
          >
            {date?.from ? (
              date.to ? (
                <>
                  {format(date.from, 'LLL dd, y')} - {format(date.to, 'LLL dd, y')}
                </>
              ) : (
                format(date.from, 'LLL dd, y')
              )
            ) : (
              <span>Pick a date</span>
            )}
          </Button>
        </PopoverTrigger_Shadcn_>
        <PopoverContent_Shadcn_ className="w-auto p-0" align="start">
          <Calendar
            initialFocus
            mode="range"
            defaultMonth={date?.from}
            selected={date}
            onSelect={setDate}
            numberOfMonths={2}
          />
        </PopoverContent_Shadcn_>
      </Popover_Shadcn_>
    </div>
  )
}