63 lines
1.6 KiB
Elixir
63 lines
1.6 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Activity.Ir.Topics do
|
|
alias Pleroma.Object
|
|
alias Pleroma.Web.ActivityPub.Visibility
|
|
|
|
def get_activity_topics(activity) do
|
|
activity
|
|
|> Object.normalize()
|
|
|> generate_topics(activity)
|
|
|> List.flatten()
|
|
end
|
|
|
|
defp generate_topics(%{data: %{"type" => "Answer"}}, _) do
|
|
[]
|
|
end
|
|
|
|
defp generate_topics(object, activity) do
|
|
["user", "list"] ++ visibility_tags(object, activity)
|
|
end
|
|
|
|
defp visibility_tags(object, activity) do
|
|
case Visibility.get_visibility(activity) do
|
|
"public" ->
|
|
if activity.local do
|
|
["public", "public:local"]
|
|
else
|
|
["public"]
|
|
end
|
|
|> item_creation_tags(object, activity)
|
|
|
|
"direct" ->
|
|
["direct"]
|
|
|
|
_ ->
|
|
[]
|
|
end
|
|
end
|
|
|
|
defp item_creation_tags(tags, %{data: %{"type" => "Create"}} = object, activity) do
|
|
tags ++ hashtags_to_topics(object) ++ attachment_topics(object, activity)
|
|
end
|
|
|
|
defp item_creation_tags(tags, _, _) do
|
|
tags
|
|
end
|
|
|
|
defp hashtags_to_topics(%{data: %{"tag" => tags}}) do
|
|
tags
|
|
|> Enum.filter(&is_bitstring(&1))
|
|
|> Enum.map(fn tag -> "hashtag:" <> tag end)
|
|
end
|
|
|
|
defp hashtags_to_topics(_), do: []
|
|
|
|
defp attachment_topics(%{data: %{"attachment" => []}}, _act), do: []
|
|
|
|
defp attachment_topics(_object, %{local: true}), do: ["public:media", "public:local:media"]
|
|
|
|
defp attachment_topics(_object, _act), do: ["public:media"]
|
|
end
|