added User.NotificationSetting struct

lib/pleroma/user/notification_setting.ex

@@ -0,0 +1,49 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.User.NotificationSetting do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  @derive Jason.Encoder
+  @primary_key false
+
+  @privacy_options %{
+    name_and_message: "name_and_message",
+    name_only: "name_only",
+    no_name_or_message: "no_name_or_message"
+  }
+
+  embedded_schema do
+    field(:followers, :boolean, default: true)
+    field(:follows, :boolean, default: true)
+    field(:non_follows, :boolean, default: true)
+    field(:non_followers, :boolean, default: true)
+    field(:privacy_option, :string, default: @privacy_options.name_and_message)
+  end
+
+  def changeset(schema, params) do
+    schema
+    |> cast(prepare_attrs(params), [
+      :followers,
+      :follows,
+      :non_follows,
+      :non_followers,
+      :privacy_option
+    ])
+    |> validate_inclusion(:privacy_option, Map.values(@privacy_options))
+  end
+
+  defp prepare_attrs(params) do
+    Enum.reduce(params, %{}, fn
+      {k, v}, acc
+      when k in ["followers", "follows", "non_follows", "non_followers"] and
+             is_binary(v) ->
+        Map.put(acc, k, String.downcase(v))
+
+      {k, v}, acc ->
+        Map.put(acc, k, v)
+    end)
+  end
+end