+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.User.WelcomeChatMessage do
+ alias Pleroma.Config
+ alias Pleroma.User
+ alias Pleroma.Web.CommonAPI
+
+ @spec enabled?() :: boolean()
+ def enabled?, do: Config.get([:welcome, :chat_message, :enabled], false)
+
+ @spec post_message(User.t()) :: {:ok, Pleroma.Activity.t() | nil}
+ def post_message(user) do
+ [:welcome, :chat_message, :sender_nickname]
+ |> Config.get(nil)
+ |> fetch_sender()
+ |> do_post(user, welcome_message())
+ end
+
+ defp do_post(%User{} = sender, recipient, message)
+ when is_binary(message) do
+ CommonAPI.post_chat_message(
+ sender,
+ recipient,
+ message
+ )
+ end
+
+ defp do_post(_sender, _recipient, _message), do: {:ok, nil}
+
+ defp fetch_sender(nickname) when is_binary(nickname) do
+ with %User{local: true} = user <- User.get_cached_by_nickname(nickname) do
+ user
+ else
+ _ -> nil
+ end
+ end
+
+ defp fetch_sender(_), do: nil
+
+ defp welcome_message do
+ Config.get([:welcome, :chat_message, :message], nil)
+ end
+end