Revert "Merge branch 'features/hashtag-column' into 'develop'"

This reverts merge request !2824

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -312,15 +312,16 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   def fix_emoji(object), do: object
 
   def fix_tag(%{"tag" => tag} = object) when is_list(tag) do
-    hashtags =
+    tags =
       tag
       |> Enum.filter(fn data -> data["type"] == "Hashtag" and data["name"] end)
-      |> Enum.map(fn
-        %{"name" => "#" <> hashtag} -> String.downcase(hashtag)
-        %{"name" => hashtag} -> String.downcase(hashtag)
+      |> Enum.map(fn %{"name" => name} ->
+        name
+        |> String.slice(1..-1)
+        |> String.downcase()
       end)
 
-    Map.put(object, "hashtags", hashtags)
+    Map.put(object, "tag", tag ++ tags)
   end
 
   def fix_tag(%{"tag" => %{} = tag} = object) do
@@ -863,18 +864,23 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   def maybe_fix_object_url(data), do: data
 
   def add_hashtags(object) do
-    hashtags =
-      %Object{data: object}
-      |> Object.hashtags()
-      |> Enum.map(fn tag ->
-        %{
-          "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
-          "name" => "##{tag}",
-          "type" => "Hashtag"
-        }
+    tags =
+      (object["tag"] || [])
+      |> Enum.map(fn
+        # Expand internal representation tags into AS2 tags.
+        tag when is_binary(tag) ->
+          %{
+            "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
+            "name" => "##{tag}",
+            "type" => "Hashtag"
+          }
+
+        # Do not process tags which are already AS2 tag objects.
+        tag when is_map(tag) ->
+          tag
       end)
 
-    Map.put(object, "tag", hashtags ++ (object["tag"] || []))
+    Map.put(object, "tag", tags)
   end
 
   # TODO These should be added on our side on insertion, it doesn't make much
@@ -930,7 +936,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   def set_sensitive(object) do
-    tags = object["hashtags"] || object["tag"] || []
+    tags = object["tag"] || []
     Map.put(object, "sensitive", "nsfw" in tags)
   end