joshsoftware/code-curiosity

class @GoogleAnalytics

  @load: ->

    ((i, s, o, g, r, a, m) ->
      i['GoogleAnalyticsObject'] = r
      i[r] = i[r] or ->
        (i[r].q = i[r].q or []).push arguments
        return

      i[r].l = 1 * new Date

      a = s.createElement(o)
      m = s.getElementsByTagName(o)[0]

      a.async = 1
      a.src = g
      m.parentNode.insertBefore a, m
      return
    ) window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga'
    ga 'create', GoogleAnalytics.analyticsId(), 'auto'

    # If Turbolinks is supported, set up a callback to track pageviews on page:change.
    # If it isn't supported, just track the pageview now.
    if typeof Turbolinks isnt 'undefined' and Turbolinks.supported
      document.addEventListener "page:change", (->
        GoogleAnalytics.trackPageview()
      ), true
    else
      GoogleAnalytics.trackPageview()

  @trackPageview: (url) ->
    unless GoogleAnalytics.isLocalRequest()
      ga 'send',
        hitType: 'pageview'
        page: location.pathname

  @isLocalRequest: ->
    GoogleAnalytics.documentDomainIncludes "local"

  @documentDomainIncludes: (str) ->
    document.domain.indexOf(str) isnt -1

  @analyticsId: ->
    # your google analytics ID(s) here...
    'UA-106229370-1'

GoogleAnalytics.load()