1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.RichMedia.Parser do
7 Pleroma.Web.RichMedia.Parsers.OGP,
8 Pleroma.Web.RichMedia.Parsers.TwitterCard,
9 Pleroma.Web.RichMedia.Parsers.OEmbed
12 def parse(nil), do: {:error, "No URL provided"}
14 if Mix.env() == :test do
15 def parse(url), do: parse_url(url)
19 Cachex.fetch!(:rich_media_cache, url, fn _ ->
20 {:commit, parse_url(url)}
24 {:error, "Cachex error: #{inspect(e)}"}
29 defp parse_url(url) do
31 {:ok, %Tesla.Env{body: html}} = Pleroma.HTTP.get(url, [], pool: :media)
33 html |> maybe_parse() |> get_parsed_data()
36 {:error, "Parsing error: #{inspect(e)}"}
40 defp maybe_parse(html) do
41 Enum.reduce_while(@parsers, %{}, fn parser, acc ->
42 case parser.parse(html, acc) do
43 {:ok, data} -> {:halt, data}
44 {:error, _msg} -> {:cont, acc}
49 defp get_parsed_data(%{title: title} = data) when is_binary(title) and byte_size(title) > 0 do
53 defp get_parsed_data(data) do
54 {:error, "Found metadata was invalid or incomplete: #{inspect(data)}"}