Pleroma/lib/pleroma/web/rich_media/parsers/o_embed.ex

30 lines
907 B
Elixir
Raw Normal View History

# Pleroma: A lightweight social networking server
2020-03-03 23:44:49 +01:00
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
2019-01-13 01:06:50 +01:00
defmodule Pleroma.Web.RichMedia.Parsers.OEmbed do
def parse(html, _data) do
with elements = [_ | _] <- get_discovery_data(html),
2020-06-09 19:49:24 +02:00
oembed_url when is_binary(oembed_url) <- get_oembed_url(elements),
2019-01-13 01:06:50 +01:00
{:ok, oembed_data} <- get_oembed_data(oembed_url) do
2020-06-11 15:57:31 +02:00
oembed_data
2019-01-13 01:06:50 +01:00
else
2020-06-11 15:57:31 +02:00
_e -> %{}
2019-01-13 01:06:50 +01:00
end
end
defp get_discovery_data(html) do
html |> Floki.find("link[type='application/json+oembed']")
end
2020-06-09 19:49:24 +02:00
defp get_oembed_url([{"link", attributes, _children} | _]) do
Enum.find_value(attributes, fn {k, v} -> if k == "href", do: v end)
2019-01-13 01:06:50 +01:00
end
defp get_oembed_data(url) do
with {:ok, %Tesla.Env{body: json}} <- Pleroma.Web.RichMedia.Helpers.rich_media_get(url) do
2020-06-09 19:49:24 +02:00
Jason.decode(json)
end
2019-01-13 01:06:50 +01:00
end
end