Add welcome chatmessages

* I added the option in config/config.exs
* created a new module lib/pleroma/user/welcome_chat_message.ex
* Added it to the registration flow
* added to the cheatsheet
* added to the config/description.ex
* added to the Changelog.md

test/user/welcome_chat_massage_test.exs

@@ -0,0 +1,35 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.User.WelcomeChatMessageTest do
+  use Pleroma.DataCase
+
+  alias Pleroma.Config
+  alias Pleroma.User.WelcomeChatMessage
+
+  import Pleroma.Factory
+
+  setup do: clear_config([:welcome])
+
+  describe "post_message/1" do
+    test "send a chat welcome message" do
+      welcome_user = insert(:user)
+      user = insert(:user, name: "mewmew")
+
+      Config.put([:welcome, :chat_message, :enabled], true)
+      Config.put([:welcome, :chat_message, :sender_nickname], welcome_user.nickname)
+
+      Config.put(
+        [:welcome, :chat_message, :message],
+        "Hello. Welcome to blob.cat"
+      )
+
+      {:ok, %Pleroma.Activity{} = activity} = WelcomeChatMessage.post_message(user)
+
+      assert user.ap_id in activity.recipients
+      assert Pleroma.Object.normalize(activity).data["type"] == "ChatMessage"
+      assert Pleroma.Object.normalize(activity).data["content"] =~ "Hello. Welcome to "
+    end
+  end
+end

test/user_test.exs

@@ -412,8 +412,36 @@ defmodule Pleroma.UserTest do
       welcome_user = insert(:user)
       Pleroma.Config.put([:welcome, :direct_message, :enabled], true)
       Pleroma.Config.put([:welcome, :direct_message, :sender_nickname], welcome_user.nickname)
-      Pleroma.Config.put([:welcome, :direct_message, :message], "Hello, this is a cool site")
+      Pleroma.Config.put([:welcome, :direct_message, :message], "Hello, this is a direct message")
 
+      cng = User.register_changeset(%User{}, @full_user_data)
+      {:ok, registered_user} = User.register(cng)
+      ObanHelpers.perform_all()
+
+      activity = Repo.one(Pleroma.Activity)
+      assert registered_user.ap_id in activity.recipients
+      assert Object.normalize(activity).data["content"] =~ "direct message"
+      assert activity.actor == welcome_user.ap_id
+    end
+
+    test "it sends a welcome chat message if it is set" do
+      welcome_user = insert(:user)
+      Pleroma.Config.put([:welcome, :chat_message, :enabled], true)
+      Pleroma.Config.put([:welcome, :chat_message, :sender_nickname], welcome_user.nickname)
+      Pleroma.Config.put([:welcome, :chat_message, :message], "Hello, this is a chat message")
+
+      cng = User.register_changeset(%User{}, @full_user_data)
+      {:ok, registered_user} = User.register(cng)
+      ObanHelpers.perform_all()
+
+      activity = Repo.one(Pleroma.Activity)
+      assert registered_user.ap_id in activity.recipients
+      assert Object.normalize(activity).data["content"] =~ "chat message"
+      assert activity.actor == welcome_user.ap_id
+    end
+
+    test "it sends a welcome email message if it is set" do
+      welcome_user = insert(:user)
       Pleroma.Config.put([:welcome, :email, :enabled], true)
       Pleroma.Config.put([:welcome, :email, :sender], welcome_user.email)
 
@@ -428,11 +456,6 @@ defmodule Pleroma.UserTest do
       {:ok, registered_user} = User.register(cng)
       ObanHelpers.perform_all()
 
-      activity = Repo.one(Pleroma.Activity)
-      assert registered_user.ap_id in activity.recipients
-      assert Object.normalize(activity).data["content"] =~ "cool site"
-      assert activity.actor == welcome_user.ap_id
-
       assert_email_sent(
         from: {instance_name, welcome_user.email},
         to: {registered_user.name, registered_user.email},