import React, { useState } from 'react'
import PropTypes from 'prop-types'
import OptionGroup from '../OptionGroup'
import { FormattedMessage } from 'react-intl'
import RightIcon from '@material-ui/icons/KeyboardArrowRight'

const PatternOptions = props => {
  const [expanded, setExpanded] = useState([])
  const toggleGroup = group => {
    let shown = expanded.slice(0)
    let index = shown.indexOf(group)
    if (index === -1) shown.push(group)
    else shown.splice(index, 1)
    setExpanded(shown)
  }

  const renderGroup = group => {
    let open = true
    if (expanded.indexOf(group) === -1) open = false
    let output = []
    let children = null
    if (expanded.indexOf(group) !== -1)
      children = (
        <ul className="config l3">
          <OptionGroup
            noDocs={props.noDocs}
            key={group + '-group'}
            units={props.units}
            config={props.config}
            data={props.data}
            pattern={props.pattern}
            options={props.config.optionGroups[group]}
            updateValue={props.updateValue}
            raiseEvent={props.raiseEvent}
          />
        </ul>
      )
    output.push(
      <li className={open ? 'expanded' : 'collapsed'} key={group + '-ghead'}>
        <span onClick={() => toggleGroup(group)}>
          <RightIcon className={'icon-col-exp ' + (open ? 'expanded' : 'collapsed')} />
          <FormattedMessage id={'optiongroups.' + group} />
        </span>
        {children}
      </li>
    )

    return output
  }

  const children = []
  for (let group in props.config.optionGroups) {
    if (props.data.settings.advanced || group !== 'advanced') {
      children.push(renderGroup(group))
    }
  }

  return <ul className="config l2">{children}</ul>
}

PatternOptions.propTypes = {
  config: PropTypes.object.isRequired,
  raiseEvent: PropTypes.func
}

PatternOptions.defaultProps = {}

export default PatternOptions