twitter_card.ex
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twitter_card.ex
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.RichMedia.Parsers.TwitterCard do
	alias Pleroma.Web.RichMedia.Parsers.MetaTagsParser

	@spec parse(list(), map()) :: map()
	def parse(html, data) do
	data
	\|> MetaTagsParser.parse(html, "og", "property")
	\|> MetaTagsParser.parse(html, "twitter", "name")
	\|> MetaTagsParser.parse(html, "twitter", "property")
	\|> filter_tags()
	end

	defp filter_tags(tags) do
	Map.filter(tags, fn {k, _v} ->
	cond do
	k in ["card", "description", "image", "title", "ttl", "type", "url"] -> true
	String.starts_with?(k, "image:") -> true
	true -> false
	end
	end)
	end
	end