Update stats admin endpoint

lib/pleroma/counter_cache.ex

@@ -40,7 +40,7 @@ defmodule Pleroma.CounterCache do
     end
   end
 
-  def get_as_map() do
+  def get_sum() do
     CounterCache
     |> select([c], %{
       "public" => sum(c.public),
@@ -49,6 +49,10 @@ defmodule Pleroma.CounterCache do
       "direct" => sum(c.direct)
     })
     |> Repo.one()
+    |> Enum.map(fn {visibility, dec_count} ->
+      {visibility, Decimal.to_integer(dec_count)}
+    end)
+    |> Enum.into(%{})
   end
 
   def set(instance, values) do

lib/pleroma/stats.ex

@@ -97,14 +97,11 @@ defmodule Pleroma.Stats do
     }
   end
 
-  def get_status_visibility_count do
-    counter_cache = CounterCache.get_as_map()
-
-    %{
-      public: counter_cache["status_visibility_public"] || 0,
-      unlisted: counter_cache["status_visibility_unlisted"] || 0,
-      private: counter_cache["status_visibility_private"] || 0,
-      direct: counter_cache["status_visibility_direct"] || 0
-    }
+  def get_status_visibility_count(instance \\ nil) do
+    if is_nil(instance) do
+      CounterCache.get_sum()
+    else
+      CounterCache.get_by_instance(instance)
+    end
   end
 end

lib/pleroma/web/admin_api/admin_api_controller.ex

@@ -1122,11 +1122,10 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     end
   end
 
-  def stats(conn, _) do
-    count = Stats.get_status_visibility_count()
+  def stats(conn, params) do
+    counters = Stats.get_status_visibility_count(params["instance"])
 
-    conn
-    |> json(%{"status_visibility" => count})
+    json(conn, %{"status_visibility" => counters})
   end
 
   defp errors(conn, {:error, :not_found}) do