akkoma/lib/pleroma/web/rich_media/parsers/oembed_parser.ex
2020-06-11 17:57:31 +04:00

35 lines
965 B
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.RichMedia.Parsers.OEmbed do
def parse(html, _data) do
with elements = [_ | _] <- get_discovery_data(html),
{:ok, oembed_url} <- get_oembed_url(elements),
{:ok, oembed_data} <- get_oembed_data(oembed_url) do
oembed_data
else
_e -> %{}
end
end
defp get_discovery_data(html) do
html |> Floki.find("link[type='application/json+oembed']")
end
defp get_oembed_url(nodes) do
{"link", attributes, _children} = nodes |> hd()
{:ok, Enum.into(attributes, %{})["href"]}
end
defp get_oembed_data(url) do
{:ok, %Tesla.Env{body: json}} = Pleroma.HTTP.get(url, [], adapter: [pool: :media])
{:ok, data} = Jason.decode(json)
data = data |> Map.new(fn {k, v} -> {String.to_atom(k), v} end)
{:ok, data}
end
end