Add logic for keeping follow_request_count up-to-date on the follow,

`approve_friend_request`, and `deny_friend_request` actions.
Add follow_request_count to the user view.

lib/pleroma/user.ex

@@ -618,6 +618,32 @@ defmodule Pleroma.User do
     )
   end
 
+  def update_follow_request_count(%User{} = user) do
+    subquery =
+      user
+      |> User.get_follow_requests_query()
+      |> select([a], %{count: count(a.id)})
+
+    User
+    |> where(id: ^user.id)
+    |> join(:inner, [u], s in subquery(subquery))
+    |> update([u, s],
+      set: [
+        info:
+          fragment(
+            "jsonb_set(?, '{follow_request_count}', ?::varchar::jsonb, true)",
+            u.info,
+            s.count
+          )
+      ]
+    )
+    |> Repo.update_all([], returning: true)
+    |> case do
+      {1, [user]} -> {:ok, user}
+      _ -> {:error, user}
+    end
+  end
+
   def get_follow_requests(%User{} = user) do
     q = get_follow_requests_query(user)
     reqs = Repo.all(q)

lib/pleroma/user/info.ex

@@ -12,6 +12,7 @@ defmodule Pleroma.User.Info do
     field(:source_data, :map, default: %{})
     field(:note_count, :integer, default: 0)
     field(:follower_count, :integer, default: 0)
+    field(:follow_request_count, :integer, default: 0)
     field(:locked, :boolean, default: false)
     field(:confirmation_pending, :boolean, default: false)
     field(:confirmation_token, :string, default: nil)

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -172,9 +172,10 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     # only accept false as false value
     local = !(params[:local] == false)
 
-    with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
+    with data <- %{"to" => to, "type" => "Accept", "actor" => actor.ap_id, "object" => object},
          {:ok, activity} <- insert(data, local),
-         :ok <- maybe_federate(activity) do
+         :ok <- maybe_federate(activity),
+         _ <- User.update_follow_request_count(actor) do
       {:ok, activity}
     end
   end
@@ -183,9 +184,10 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     # only accept false as false value
     local = !(params[:local] == false)
 
-    with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
+    with data <- %{"to" => to, "type" => "Reject", "actor" => actor.ap_id, "object" => object},
          {:ok, activity} <- insert(data, local),
-         :ok <- maybe_federate(activity) do
+         :ok <- maybe_federate(activity),
+         _ <- User.update_follow_request_count(actor) do
       {:ok, activity}
     end
   end
@@ -283,7 +285,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   def follow(follower, followed, activity_id \\ nil, local \\ true) do
     with data <- make_follow_data(follower, followed, activity_id),
          {:ok, activity} <- insert(data, local),
-         :ok <- maybe_federate(activity) do
+         :ok <- maybe_federate(activity),
+         _ <- User.update_follow_request_count(followed) do
       {:ok, activity}
     end
   end
@@ -293,7 +296,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
          unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
          {:ok, activity} <- insert(unfollow_data, local),
-         :ok <- maybe_federate(activity) do
+         :ok <- maybe_federate(activity),
+         _ <- User.update_follow_request_count(followed) do
       {:ok, activity}
     end
   end

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -406,7 +406,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       if not User.locked?(followed) do
         ActivityPub.accept(%{
           to: [follower.ap_id],
-          actor: followed.ap_id,
+          actor: followed,
           object: data,
           local: true
         })
@@ -432,7 +432,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
            ActivityPub.accept(%{
              to: follow_activity.data["to"],
              type: "Accept",
-             actor: followed.ap_id,
+             actor: followed,
              object: follow_activity.data["id"],
              local: false
            }) do
@@ -458,7 +458,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
            ActivityPub.reject(%{
              to: follow_activity.data["to"],
              type: "Reject",
-             actor: followed.ap_id,
+             actor: followed,
              object: follow_activity.data["id"],
              local: false
            }) do

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -680,7 +680,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
          {:ok, _activity} <-
            ActivityPub.accept(%{
              to: [follower.ap_id],
-             actor: followed.ap_id,
+             actor: followed,
              object: follow_activity.data["id"],
              type: "Accept"
            }) do
@@ -702,7 +702,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
          {:ok, _activity} <-
            ActivityPub.reject(%{
              to: [follower.ap_id],
-             actor: followed.ap_id,
+             actor: followed,
              object: follow_activity.data["id"],
              type: "Reject"
            }) do

lib/pleroma/web/twitter_api/twitter_api_controller.ex

@@ -570,7 +570,7 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
          {:ok, _activity} <-
            ActivityPub.accept(%{
              to: [follower.ap_id],
-             actor: followed.ap_id,
+             actor: followed,
              object: follow_activity.data["id"],
              type: "Accept"
            }) do
@@ -590,7 +590,7 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
          {:ok, _activity} <-
            ActivityPub.reject(%{
              to: [follower.ap_id],
-             actor: followed.ap_id,
+             actor: followed,
              object: follow_activity.data["id"],
              type: "Reject"
            }) do

lib/pleroma/web/twitter_api/views/user_view.ex

@@ -113,10 +113,12 @@ defmodule Pleroma.Web.TwitterAPI.UserView do
       "fields" => fields,
 
       # Pleroma extension
-      "pleroma" => %{
-        "confirmation_pending" => user_info.confirmation_pending,
-        "tags" => user.tags
-      }
+      "pleroma" =>
+        %{
+          "confirmation_pending" => user_info.confirmation_pending,
+          "tags" => user.tags
+        }
+        |> maybe_with_follow_request_count(user, for_user)
     }
 
     data =
@@ -132,6 +134,14 @@ defmodule Pleroma.Web.TwitterAPI.UserView do
     end
   end
 
+  defp maybe_with_follow_request_count(data, %User{id: id, info: %{locked: true}} = user, %User{
+         id: id
+       }) do
+    Map.put(data, "follow_request_count", user.info.follow_request_count)
+  end
+
+  defp maybe_with_follow_request_count(data, _, _), do: data
+
   defp maybe_with_role(data, %User{id: id} = user, %User{id: id}) do
     Map.merge(data, %{"role" => role(user), "show_role" => user.info.show_role})
   end