block twitter-card
  -
    var twCardType = 'summary_large_image';
    var twCardImg = `https://${site.domain}/img/social-cards/${site.domain}.png?v=${pkg.version}`;
    var twTitle = pageTitle || `${site.name} | ${site.description}`;
    var twDescription = pageDescription || site.description;
    var twPlayerEmbedUrl, twPlayerStreamUrl, twPlayerWidth, twPlayerHeight;

    if ((currentView === 'dvr') && (viewName === 'home-player')) {
      // use default social card assigned above
      twTitle = pageTitle;
      twDescription = pageDescription;
    } else if (episode && episode.images && episode.images.thumbnail) {
      if (clip && clip.images && clip.images.thumbnail) {
        twCardImg = `https://${site.domain}/image/${clip.images.thumbnail._id || clip.images.thumbnail}`;
        twTitle = clip.title;
        twDescription = clip.description;
        twCardType = 'player';
        twPlayerEmbedUrl = `https://${site.domain}/dvr/${clip.episode._id}/clip/${clip._id}/embed`;
        twPlayerStreamUrl = `https://${site.domain}/dvr/${clip.episode._id}/clip/${clip._id}/media`;
        twPlayerWidth = 960;
        twPlayerHeight = 540;
      } else {
        twCardImg = `https://${site.domain}/image/${episode.images.thumbnail._id || episode.images.thumbnail}`;
        twTitle = episode.title;
        twDescription = episode.description;
      }
    } else if (clip && clip.images && clip.images.thumbnail) {
      twCardImg = `https://${site.domain}/image/${clip.images.thumbnail._id || clip.images.thumbnail}`;
      twTitle = clip.title;
      twDescription = clip.description;
      twCardType = 'player';
      twPlayerEmbedUrl = `https://${site.domain}/dvr/${clip.episode._id}/clip/${clip._id}/embed`;
      twPlayerStreamUrl = `https://${site.domain}/dvr/${clip.episode._id}/clip/${clip._id}/media`;
      twPlayerWidth = 960;
      twPlayerHeight = 540;
    } else if (video && video.images && video.images.thumbnail) {
      twCardImg = `https://${site.domain}/image/${video.images.thumbnail._id || video.images.thumbnail}`;
      twTitle = video.title;
      twDescription = video.description;
    } else if (userProfile) {
      twCardImg = getUserPictureUrl(userProfile, 'large');
      twTitle = pageTitle;
      twDescription = pageDescription;
    } else if (channel && channel.images && channel.images.thumbnail) {
      twCardImg = `https://${site.domain}/image/${channel.images.thumbnail._id || channel.images.thumbnail}`;
      twTitle = channel.name;
      twDescription = channel.description;
    } else if (advertisement && advertisement.content) {
      twTitle = advertisement.content.title;
      if (advertisement.content.body) {
        twDescription = marked.parse(advertisement.content.body, { renderer: fullMarkdownRenderer }).trim();
      }
      switch (advertisement.content.mediaType) {
        case 'Image':
          twCardImg = `https://${site.domain}/image/${advertisement.content.media._id}`;
          break;
        case 'Video':
          if (advertisement.content && advertisement.content.media && advertisement.content.media.images && advertisement.content.media.images.thumbnail) {
            twCardImg = `https://${site.domain}/image/${advertisement.content.media.images.thumbnail._id || advertisement.content.media.images.thumbnail}`;
          }
          break;
      }
    }

  meta(name='twitter:card', content= twCardType)
  meta(name='twitter:image' content= twCardImg)
  meta(name='twitter:title', content= twTitle)
  if twDescription && (twDescription.length > 0)
    meta(name='twitter:description', content= twDescription)
  if twCardType === 'player'
    meta(name='twitter:player', content= twPlayerEmbedUrl)
    meta(name='twitter:player:stream', content= twPlayerStreamUrl)
    meta(name='twitter:player:width', content= twPlayerWidth)
    meta(name='twitter:player:height', content= twPlayerHeight)