def opengraph()

in onward/app/controllers/CardController.scala [22:118]
88 lines of code
10 McCabe index (conditional complexity)

  def opengraph(resource: String): Action[AnyContent] =
    Action.async { implicit request =>
      val myUri = new URI(resource)
      val r = myUri.getPath
      val host = new URI(r).getHost

      val whiteList = List(
        "theguardian.com",
        "www.theguardian.com",
        "guardian.co.uk",
        "m.guardian.co.uk",
        "www.guardian.co.uk",
        "bbc.co.uk",
        "www.bbc.co.uk",
        "m.bbc.co.uk",
        "vimeo.com",
        "www.vimeo.com",
        "dailymotion.com",
        "www.dailymotion.com",
        "youtube.com",
        "www.youtube.com",
        "www.youtube-nocookie.com",
        "gov.uk",
      )

      host match {
        case a if whiteList.contains(a) =>
          wsClient.url(r).get().map { response =>
            response.status match {
              case 200 =>
                Cached(900) {
                  val fragment = Jsoup.parseBodyFragment(response.body)

                  val image = Option(fragment.select("meta[property=og:image]").attr("content"))
                  val nonFallbackImage = image filter { !_.contains(conf.Configuration.images.fallbackLogo) }
                  // To test a story that has no image:
                  // /cards/opengraph/http%3A%2F%2Fwww.theguardian.com%2Fmedia%2Fgreenslade%2F2013%2Faug%2F22%2Fjournalist-safety-egypt.json

                  JsonComponent.fromWritable(
                    withRefreshStatus(
                      Json
                        .toJson(
                          Map(
                            ("url", fragment.select("meta[property=og:url]").attr("content")),
                            ("title", fragment.select("meta[property=og:title]").attr("content")),
                            ("image", nonFallbackImage.getOrElse("")),
                            ("description", fragment.select("meta[property=og:description]").attr("content")),
                            ("site_name", fragment.select("meta[property=og:site_name]").attr("content")),
                            (
                              "published_time",
                              fragment.select("meta[property=article:published_time]").attr("content"),
                            ),
                            ("modified_time", fragment.select("meta[property=article:modified_time]").attr("content")),
                            ("host", a.replaceAll("^www\\.", "")),
                          ),
                        )
                        .as[JsObject],
                    ),
                  )
                }
              case _ => NotFound
            }
          }

        case w if w.startsWith("en.wikipedia.org") =>
          wsClient.url(r).get().map { response =>
            response.status match {
              case 200 =>
                Cached(900) {
                  val fragment = Jsoup.parseBodyFragment(response.body)
                  val firstParagraph = fragment.select("#mw-content-text > p").first
                  firstParagraph.select(".reference").remove()

                  JsonComponent.fromWritable(
                    withRefreshStatus(
                      Json
                        .toJson(
                          Map(
                            ("url", resource),
                            ("title", fragment.select("#firstHeading").text()),
                            ("image", fragment.select(".image img").attr("src")),
                            ("description", firstParagraph.text().split("\\.").headOption.getOrElse("")),
                            ("site_name", "Wikipedia"),
                            ("host", "wikipedia.org"),
                          ),
                        )
                        .as[JsObject],
                    ),
                  )
                }
              case _ => NotFound
            }
          }

        case _ => Future { NotFound }
      }
    }