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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.Emoji.Formatter do
   6   alias Pleroma.Emoji
   7   alias Pleroma.HTML
   8   alias Pleroma.Web.Endpoint
   9   alias Pleroma.Web.MediaProxy
  10
  11   def emojify(text) do
  12     emojify(text, Emoji.get_all())
  13   end
  14
  15   def emojify(text, nil), do: text
  16
  17   def emojify(text, emoji, strip \\ false) do
  18     Enum.reduce(emoji, text, fn
  19       {_, %Emoji{safe_code: emoji, safe_file: file}}, text ->
  20         String.replace(text, ":#{emoji}:", prepare_emoji_html(emoji, file, strip))
  21
  22       {unsafe_emoji, unsafe_file}, text ->
  23         emoji = HTML.strip_tags(unsafe_emoji)
  24         file = HTML.strip_tags(unsafe_file)
  25         String.replace(text, ":#{emoji}:", prepare_emoji_html(emoji, file, strip))
  26     end)
  27     |> HTML.filter_tags()
  28   end
  29
  30   defp prepare_emoji_html(_emoji, _file, true), do: ""
  31
  32   defp prepare_emoji_html(emoji, file, _strip) do
  33     "<img class='emoji' alt='#{emoji}' title='#{emoji}' src='#{MediaProxy.url(file)}' />"
  34   end
  35
  36   def demojify(text) do
  37     emojify(text, Emoji.get_all(), true)
  38   end
  39
  40   def demojify(text, nil), do: text
  41
  42   @doc "Outputs a list of the emoji-Maps in a text"
  43   def get_emoji_map(text) when is_binary(text) do
  44     Emoji.get_all()
  45     |> Enum.filter(fn {emoji, %Emoji{}} -> String.contains?(text, ":#{emoji}:") end)
  46     |> Enum.reduce(%{}, fn {name, %Emoji{file: file}}, acc ->
  47       Map.put(acc, name, to_string(URI.merge(Endpoint.url(), file)))
  48     end)
  49   end
  50
  51   def get_emoji_map(_), do: %{}
  52 end