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

   1 defmodule Pleroma.Web.Metadata do
   2   alias Phoenix.HTML
   3
   4   @parsers Pleroma.Config.get([:metadata, :providers], [])
   5
   6   def get_cached_tags(params) do
   7     # I am unsure how well ETS works with big keys
   8     key = :erlang.term_to_binary(params)
   9
  10     Cachex.fetch!(:metadata_cache, key, fn _key ->
  11       {:commit, build_tags(params)}
  12     end)
  13   end
  14
  15   def build_tags(params) do
  16     Enum.reduce(@parsers, "", fn parser, acc ->
  17       rendered_html =
  18         params
  19         |> parser.build_tags()
  20         |> Enum.map(&to_tag/1)
  21         |> Enum.map(&HTML.safe_to_string/1)
  22         |> Enum.join()
  23
  24       acc <> rendered_html
  25     end)
  26   end
  27
  28   def to_tag(data) do
  29     with {name, attrs, _content = []} <- data do
  30       HTML.Tag.tag(name, attrs)
  31     else
  32       {name, attrs, content} ->
  33         HTML.Tag.content_tag(name, content, attrs)
  34
  35       _ ->
  36         raise ArgumentError, message: "make_tag invalid args"
  37     end
  38   end
  39 end