Revert "Merge branch 'streamer-refactoring' into 'develop'"

This reverts merge request !1653

lib/pleroma/activity/ir/topics.ex

@@ -1,63 +0,0 @@
-# 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