import React, {useState, useRef} from 'react'
import {Button} from './form'
import {DateTime} from 'luxon'
import InfiniteCalendar from 'react-infinite-calendar';

import Modal from '~/components/modal'

import styles from './styles.module.css'

// TODO: At some point make the date input better for accessibility
// (currently just skips tab index)
export default function DateInput({placeholder: _placeholder, label: _label, error, hint, name, value, onChange, onBlur, isValid, minDate, maxDate}){
  const label = (_label === undefined) ? name.replace(name[0], name[0].toUpperCase()) : _label
  const displayedValue = value ? DateTime.fromISO(value).toFormat('LLLL dd, yyyy') : _placeholder
  const inputRef = useRef()

  const [modalShown, setModal] = useState(false)

  const handleDateSelect = date => {
    onChange({target: {value: DateTime.fromJSDate(date).toISO()}})
    handleCancel()
  }
  const handleCancel = () => {
    setModal(false)
    setTimeout(()=>inputRef.current?.blur(), 0)
  }

  return (
    <div className={styles.formElementContainer}>
      {label && <label htmlFor={name}>{label}:</label>}
      <div className={styles.complexInput + ((isValid && !error)?'':' ' + styles.invalid)}>
        <input readOnly tabIndex={-1} style={{opacity: value ? 1 : .4}} ref={inputRef} onClick={()=>setModal(true)} type="text" name={name} value={displayedValue} onBlur={onBlur} />
      </div>
      {(hint || error) && <span className={styles.hint}>{error || (isValid ? '' : hint)}</span>}
      <Modal title={`Select ${label}`} visible={modalShown} onDeactivate={handleCancel}>
        <InfiniteCalendar
          width={600}
          height={400}
          displayOptions={{
            layout: 'landscape',
            showTodayHelper: false
          }}
          minDate={minDate}
          maxDate={maxDate}
          selected={value ? DateTime.fromISO(value).toJSDate() : undefined}
          onSelect={handleDateSelect}
        />
      </Modal>
    </div>
  )
}