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defmodule Pleroma.Web.RichMedia.Parser do
@parsers [
Pleroma.Web.RichMedia.Parsers.OGP,
Pleroma.Web.RichMedia.Parsers.TwitterCard,
Pleroma.Web.RichMedia.Parsers.OEmbed
]
if Mix.env() == :test do
def parse(url), do: parse_url(url)
else
def parse(url),
do: Cachex.fetch!(:rich_media_cache, url, fn _ -> parse_url(url) end)
end
defp parse_url(url) do
{:ok, %Tesla.Env{body: html}} = Pleroma.HTTP.get(url)
html |> maybe_parse() |> get_parsed_data()
end
defp maybe_parse(html) do
Enum.reduce_while(@parsers, %{}, fn parser, acc ->
case parser.parse(html, acc) do
{:ok, data} -> {:halt, data}
{:error, _msg} -> {:cont, acc}
end
end)
end
defp get_parsed_data(data) when data == %{} do
{:error, "No metadata found"}
end
defp get_parsed_data(data) do
{:ok, data}
end
end
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