Only have one subscription per callback.

lib/pleroma/web/websub/websub_controller.ex

@@ -1,32 +1,13 @@
 defmodule Pleroma.Web.Websub.WebsubController do
   use Pleroma.Web, :controller
-  alias Pleroma.Web.Websub.WebsubServerSubscription
-  alias Pleroma.{Repo, User}
-  alias Pleroma.Web.OStatus
+  alias Pleroma.User
   alias Pleroma.Web.Websub
+
   def websub_subscription_request(conn, %{"nickname" => nickname} = params) do
     user = User.get_cached_by_nickname(nickname)
 
-    with {:ok, topic} <- valid_topic(params, user),
-         {:ok, lease_time} <- lease_time(params),
-         secret <- params["hub.secret"]
+    with {:ok, _websub} <- Websub.incoming_subscription_request(user, params)
     do
-      data = %{
-        state: "requested",
-        topic: topic,
-        secret: secret,
-        callback: params["hub.callback"]
-      }
-
-      change = Ecto.Changeset.change(%WebsubServerSubscription{}, data)
-      websub = Repo.insert!(change)
-
-      change = Ecto.Changeset.change(websub, %{valid_until: NaiveDateTime.add(websub.inserted_at, lease_time)})
-      websub = Repo.update!(change)
-
-      # Just spawn that for now, maybe pool later.
-      spawn(fn -> Websub.verify(websub) end)
-
       conn
       |> send_resp(202, "Accepted")
     else {:error, reason} ->
@@ -34,20 +15,4 @@ defmodule Pleroma.Web.Websub.WebsubController do
       |> send_resp(500, reason)
     end
   end
-
-  defp lease_time(%{"hub.lease_seconds" => lease_seconds}) do
-    {:ok, String.to_integer(lease_seconds)}
-  end
-
-  defp lease_time(_) do
-    {:ok, 60 * 60 * 24 * 3} # three days
-  end
-
-  defp valid_topic(%{"hub.topic" => topic}, user) do
-    if topic == OStatus.feed_path(user) do
-      {:ok, topic}
-    else
-      {:error, "Wrong topic requested, expected #{OStatus.feed_path(user)}, got #{topic}"}
-    end
-  end
 end