spc-pleroma/lib/pleroma/web/rich_media/parsers/oembed_parser.ex

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Elixir
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2019-01-13 00:06:50 +00:00
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
{:ok, oembed_data}
else
_e -> {:error, "No OEmbed data found"}
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)
{:ok, Poison.decode!(json)}
end
end