###
# 重置侧边栏位置
#
# TODO: 当有页头横幅并且其高度随着页面拉伸发生变化时，
#       需要重新设置侧边栏位置
###
repositionSidebar = ->
  $sidebar = $(".Page-sidebar")

  $header = $(".Article-header")
  $footer = $(".Article-footer")

  if $sidebar.size()
    if $footer.size()
      offsetTop = $footer.offset().top - $header.offset().top + $footer.outerHeight(true) + 20
    else
      offsetTop = $header.css("padding-top")

    $sidebar.css "margin-top", offsetTop

  return $sidebar

separateWidgets = ->
  cls = "is-separated"

  $share = $(".Widget--share")
  $widget = $share.next(".Widget")

  $widget.addClass(cls) if $widget.size() and $(".Widget-header", $widget).size() is 0

  $(".Widget-header:first").closest(".Widget").addClass(cls) if $(".Widget").size() > 1

$(document).ready ->
  separateWidgets()
  repositionSidebar()