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diff --git a/priv/repo/migrations/20190122153157_update_activity_visibility.exs b/priv/repo/migrations/20190122153157_update_activity_visibility.exs
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+++ b/priv/repo/migrations/20190122153157_update_activity_visibility.exs
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Repo.Migrations.UpdateActivityVisibility do
+  use Ecto.Migration
+  @disable_ddl_transaction true
+
+  def up do
+    definition = """
+    create or replace function activity_visibility(actor varchar, recipients varchar[], data jsonb) returns varchar as $$
+    DECLARE
+      fa varchar;
+      public varchar := 'https://www.w3.org/ns/activitystreams#Public';
+    BEGIN
+      SELECT COALESCE(users.follower_address, '') into fa from users where users.ap_id = actor;
+
+      IF data->'to' ? public THEN
+        RETURN 'public';
+      ELSIF data->'cc' ? public THEN
+        RETURN 'unlisted';
+      ELSIF ARRAY[fa] && recipients THEN
+        RETURN 'private';
+      ELSIF not(ARRAY[fa, public] && recipients) THEN
+        RETURN 'direct';
+      ELSE
+        RETURN 'unknown';
+      END IF;
+    END;
+    $$ LANGUAGE plpgsql IMMUTABLE PARALLEL SAFE SECURITY DEFINER;
+    """
+
+    execute(definition)
+  end
+
+  def down do
+  end
+end