ActivityDraft: allow quoting

lib/pleroma/web/activity_pub/builder.ex

@@ -217,6 +217,7 @@ def note(%ActivityDraft{} = draft) do
         "tag" => Keyword.values(draft.tags) |> Enum.uniq()
       }
       |> add_in_reply_to(draft.in_reply_to)
+      |> add_quote(draft.quote_post)
       |> Map.merge(draft.extra)
 
     {:ok, data, []}
@@ -232,6 +233,16 @@ defp add_in_reply_to(object, in_reply_to) do
     end
   end
 
+  defp add_quote(object, nil), do: object
+
+  defp add_quote(object, quote_post) do
+    with %Object{} = quote_object <- Object.normalize(quote_post, fetch: false) do
+      Map.put(object, "quoteUrl", quote_object.data["id"])
+    else
+      _ -> object
+    end
+  end
+
   def chat_message(actor, recipient, content, opts \\ []) do
     basic = %{
       "id" => Utils.generate_object_id(),

lib/pleroma/web/api_spec/operations/status_operation.ex

@@ -581,7 +581,12 @@ defp create_request do
           type: :string,
           description:
             "Will reply to a given conversation, addressing only the people who are part of the recipient set of that conversation. Sets the visibility to `direct`."
-        }
+        },
+        quote_id: %Schema{
+          nullable: true,
+          allOf: [FlakeID],
+          description: "ID of the status being quoted, if any"
+        },
       },
       example: %{
         "status" => "What time is it?",

test/pleroma/web/common_api_test.exs

@@ -796,6 +796,18 @@ test "it can handle activities that expire" do
         scheduled_at: expires_at
       )
     end
+
+    test "it allows allows quote posting" do
+      user = insert(:user)
+
+      {:ok, quoted} = CommonAPI.post(user, %{status: "Hello world"})
+      {:ok, quote_post} = CommonAPI.post(user, %{status: "nice post", quote_id: quoted.id})
+
+      quoted = Object.normalize(quoted)
+      quote_post = Object.normalize(quote_post)
+
+      assert quote_post.data["quoteUrl"] == quoted.data["id"]
+    end
   end
 
   describe "reactions" do