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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.Preload do
   6   alias Phoenix.HTML
   7
   8   def build_tags(%{assigns: %{csp_nonce: nonce}}, params) do
   9     preload_data =
  10       Enum.reduce(Pleroma.Config.get([__MODULE__, :providers], []), %{}, fn parser, acc ->
  11         terms =
  12           params
  13           |> parser.generate_terms()
  14           |> Enum.map(fn {k, v} -> {k, Base.encode64(Jason.encode!(v))} end)
  15           |> Enum.into(%{})
  16
  17         Map.merge(acc, terms)
  18       end)
  19
  20     rendered_html =
  21       preload_data
  22       |> Jason.encode!()
  23       |> build_script_tag(nonce)
  24       |> HTML.safe_to_string()
  25
  26     rendered_html
  27   end
  28
  29   def build_script_tag(content, nonce) do
  30     HTML.Tag.content_tag(:script, HTML.raw(content),
  31       id: "initial-results",
  32       type: "application/json",
  33       nonce: nonce
  34     )
  35   end
  36 end