stacker.news/components/boost-button.js

import { useShowModal } from './modal'
import { useToast } from './toast'
import ItemAct from './item-act'
import AccordianItem from './accordian-item'
import { useMemo, useState } from 'react'
import getColor from '@/lib/rainbow'
import BoostIcon from '@/svgs/arrow-up-double-line.svg'
import styles from './upvote.module.css'
import { BoostHelp } from './adv-post-form'
import { BOOST_MULT } from '@/lib/constants'
import classNames from 'classnames'

export default function Boost ({ item, className, ...props }) {
  const { boost } = item
  const [hover, setHover] = useState(false)

  const [color, nextColor] = useMemo(() => [getColor(boost), getColor(boost + BOOST_MULT)], [boost])

  const style = useMemo(() => (hover || boost
    ? {
        fill: hover ? nextColor : color,
        filter: `drop-shadow(0 0 6px ${hover ? nextColor : color}90)`
      }
    : undefined), [boost, hover])

  return (
    <Booster
      item={item} As={({ ...oprops }) =>
        <div className='upvoteParent'>
          <div
            className={styles.upvoteWrapper}
          >
            <BoostIcon
              {...props} {...oprops} style={style}
              width={26}
              height={26}
              onPointerEnter={() => setHover(true)}
              onMouseLeave={() => setHover(false)}
              onTouchEnd={() => setHover(false)}
              className={classNames(styles.boost, className, boost && styles.voted)}
            />
          </div>
        </div>}
    />
  )
}

function Booster ({ item, As, children }) {
  const toaster = useToast()
  const showModal = useShowModal()

  return (
    <As
      onClick={async () => {
        try {
          showModal(onClose =>
            <ItemAct onClose={onClose} item={item} act='BOOST' step={BOOST_MULT}>
              <AccordianItem header='what is boost?' body={<BoostHelp />} />
            </ItemAct>)
        } catch (error) {
          toaster.danger('failed to boost item')
        }
      }}
    >
      {children}
    </As>
  )
}