function useScrollTo(
  elementContainer,
  elem,
  fromTop,
  duration,
  nested = {
    inCollapse: false,
  },
) {
  let start = elementContainer.scrollTop,
    containerTop = elementContainer.offsetTop,
    to = elem.offsetTop,
    change = to - (start + containerTop + fromTop),
    currentTime = 0,
    increment = 20

  if (nested.inCollapse) {
    change =
      to +
      elem.offsetParent.offsetTop +
      elem.offsetParent.offsetParent.offsetTop +
      elem.offsetParent.offsetParent.offsetParent.offsetTop -
      (start + containerTop + fromTop)
  }

  let animateScroll = function () {
    currentTime += increment
    elementContainer.scrollTop = Math.easeInOutQuad(currentTime, start, change, duration)
    if (currentTime < duration) {
      setTimeout(animateScroll, increment)
    }
  }
  animateScroll()
}

//t = current time
//b = start value
//c = change in value
//d = duration
Math.easeInOutQuad = function (t, b, c, d) {
  t /= d / 2
  if (t < 1) return (c / 2) * t * t + b
  t--
  return (-c / 2) * (t * (t - 2) - 1) + b
}

export { useScrollTo }
