Extract Google Ads Transparency Center Direct Link for Media

google_ads_transparency_center_link_extractor.rb

def extract_media(url)
  response = HTTP::Utils.get url
  content = response[:html]

  if (matching_image = content.match(/previewservice.insertPreviewImageContent\('fletch.+', 'fletch.+', '(.+?)'/)&.[](1))
    return matching_image
  elsif (matching_html = content.match(/previewservice.insertPreviewHtmlContent\('fletch.+', 'fletch.+', '(.+?)'/)&.[](1))
    html = JSUtils.unescape_js matching_html
    if html.include? "lima-exp-data"
      video_id = html.match(/yt_video_id': '(.+?)'/)&.[](1)
      return "https://youtube.com/watch?v=#{video_id}"
    elsif html.include? "youtube"
      data = html.match(/<script>var adData = ({.+?});/)&.[](1)
      video_id = data.match(/video_id': '(.+?)'/)&.[](1)
      return "https://youtube.com/watch?v=#{video_id}"
    end
  end
end

puts extract_media("https://displayads-formats.googleusercontent.com/ads/preview/content.js?client=ads-integrity-transparency&creativeId=668596296645&obfuscatedCustomerId=1697351971&uiFeatures=12,54&adGroupId=153159500858&allowedVariations=44&overlay=%3DH4sIAAAAAAAAAPNS4OJPrShJLcpLzAnLTEnN90wR4uXijg8IDvTKyU8yzTMAAAE4ZsYiAAAA&sig=ACiVB_y9LtnoHa6zGz0G9nyHqg-UVfXA5w&htmlParentId=fletch-render-14409692349477595883&responseCallback=fletchCallback14409692349477595883")