import animate from './css-animation'
const noop = () => {}
const getTransitionProps = (transitionName, opt = {}) => {
  const { beforeEnter, enter, leave, afterLeave, appear = true, tag } = opt
  const transitionProps = {
    props: {
      appear,
      css: false,
    },
    on: {
      beforeEnter: beforeEnter || noop,
      enter: enter || ((el, done) => {
        animate(el, `${transitionName}-enter`, done)
      }),
      leave: leave || ((el, done) => {
        animate(el, `${transitionName}-leave`, done)
      }),
      afterLeave: afterLeave || noop,
    },
  }
  // transition-group
  if (tag) {
    transitionProps.tag = tag
  }
  return transitionProps
}

export default getTransitionProps