comments.coffee

((global, $) ->
  'use strict'

  $(() ->
    initialized = { '#vk-comments': false, '#disqus_thread': false }

    initComments = (type) ->
      return if initialized[type]
      pageUrl = 'page_url'

      switch type
        when '#disqus_thread'
          # You need to set this params using your platform's appropriate way
          discussUserName = 'discussUserName'
          disqus_config = () ->
            @.page.url = pageUrl
            @.page.identifier = 'page_identifier'

          (() ->
            d = document
            s = d.createElement('script')
            s.src = "//#{discussUserName}.disqus.com/embed.js"
            s.setAttribute('data-timestamp', +new Date())
            (d.head || d.body).appendChild(s)
          )()
        when '#vk-comments'
          VK.Widgets.Comments(
            "vk-comments",
            { limit: 5, attach: "*", pageUrl: pageUrl }
          )
        else return

      initialized[type] = true

    $tabToggler = $('.comments-wrapper a[data-toggle="tab"]')
    $tabToggler.on('shown.bs.tab', (e) ->
      initComments($(e.target).attr("href"))
    )

    initComments($tabToggler.closest('.active').find('a[data-toggle="tab"]').attr('href'))
  )
)(window, jQuery)