git.squeep.com Git - akkoma/blob - lib/pleroma/web/metadata/twitter_card.ex

   1 defmodule Pleroma.Web.Metadata.Providers.TwitterCard do
   2   alias Pleroma.Web.Metadata.Providers.Provider
   3
   4   @behaviour Provider
   5
   6   @impl Provider
   7   def build_tags(%{activity: activity}) do
   8     if Enum.any?(activity.data["object"]["tag"], fn tag -> tag == "nsfw" end) or
   9          activity.data["object"]["attachment"] == [] do
  10       build_tags(nil)
  11     else
  12       case find_first_acceptable_media_type(activity) do
  13         "image" ->
  14           [{:meta, [property: "twitter:card", content: "summary_large_image"], []}]
  15
  16         "audio" ->
  17           [{:meta, [property: "twitter:card", content: "player"], []}]
  18
  19         "video" ->
  20           [{:meta, [property: "twitter:card", content: "player"], []}]
  21
  22         _ ->
  23           build_tags(nil)
  24       end
  25     end
  26   end
  27
  28   @impl Provider
  29   def build_tags(_) do
  30     [{:meta, [property: "twitter:card", content: "summary"], []}]
  31   end
  32
  33   def find_first_acceptable_media_type(%{data: %{"object" => %{"attachment" => attachment}}}) do
  34     Enum.find_value(attachment, fn attachment ->
  35       Enum.find_value(attachment["url"], fn url ->
  36         Enum.find(["image", "audio", "video"], fn media_type ->
  37           String.starts_with?(url["mediaType"], media_type)
  38         end)
  39       end)
  40     end)
  41   end
  42 end