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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Feed.TagController do
use Pleroma.Web, :controller
alias Pleroma.Config
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.Feed.FeedView
def feed(conn, params) do
if Config.get!([:instance, :public]) do
render_feed(conn, params)
else
render_error(conn, :not_found, "Not found")
end
end
defp render_feed(conn, %{"tag" => raw_tag} = params) do
{format, tag} = parse_tag(raw_tag)
activities =
%{type: ["Create"], tag: tag}
|> Pleroma.Maps.put_if_present(:max_id, params["max_id"])
|> ActivityPub.fetch_public_activities()
conn
|> put_resp_content_type("application/#{format}+xml")
|> put_view(FeedView)
|> render("tag.#{format}",
activities: activities,
tag: tag,
feed_config: Config.get([:feed])
)
end
@spec parse_tag(binary() | any()) :: {format :: String.t(), tag :: String.t()}
defp parse_tag(raw_tag) do
case is_binary(raw_tag) && Enum.reverse(String.split(raw_tag, ".")) do
[format | tag] when format in ["rss", "atom"] ->
{format, Enum.join(tag, ".")}
_ ->
{"atom", raw_tag}
end
end
end
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