sergio-fry/youtube-fetcher

module ApplicationHelper
  def google_tag_manager_head
    return if ENV['GOOGLE_TAG_MANAGER_ID'].blank?
    raw <<-CODE
      <!-- Google Tag Manager -->
      <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
      new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
      j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
      'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
      })(window,document,'script','dataLayer','#{ENV['GOOGLE_TAG_MANAGER_ID']}');</script>
      <!-- End Google Tag Manager -->
    CODE
  end

  def google_tag_manager_body
    return if ENV['GOOGLE_TAG_MANAGER_ID'].blank?
    raw <<-CODE
      <!-- Google Tag Manager (noscript) -->
      <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=#{ENV['GOOGLE_TAG_MANAGER_ID']}"
      height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
      <!-- End Google Tag Manager (noscript) -->
    CODE
  end
end