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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only

defmodule Pleroma.Web.ActivityPub.RelayTest do
  use Pleroma.DataCase

  alias Pleroma.Activity
  alias Pleroma.Object
  alias Pleroma.User
  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.ActivityPub.Relay

  import ExUnit.CaptureLog
  import Pleroma.Factory
  import Mock

  test "gets an actor for the relay" do
    user = Relay.get_actor()
    assert user.ap_id == "#{Pleroma.Web.Endpoint.url()}/relay"
  end

  test "relay actor is invisible" do
    user = Relay.get_actor()
    assert User.invisible?(user)
  end

  describe "follow/1" do
    test "returns errors when user not found" do
      assert capture_log(fn ->
               {:error, _} = Relay.follow("test-ap-id")
             end) =~ "Could not decode user at fetch"
    end

    test "returns activity" do
      user = insert(:user)
      service_actor = Relay.get_actor()
      assert {:ok, %Activity{} = activity} = Relay.follow(user.ap_id)
      assert activity.actor == "#{Pleroma.Web.Endpoint.url()}/relay"
      assert user.ap_id in activity.recipients
      assert activity.data["type"] == "Follow"
      assert activity.data["actor"] == service_actor.ap_id
      assert activity.data["object"] == user.ap_id
    end
  end

  describe "unfollow/1" do
    test "returns errors when user not found" do
      assert capture_log(fn ->
               {:error, _} = Relay.unfollow("test-ap-id")
             end) =~ "Could not decode user at fetch"
    end

    test "returns activity" do
      user = insert(:user)
      service_actor = Relay.get_actor()
      ActivityPub.follow(service_actor, user)
      Pleroma.User.follow(service_actor, user)
      assert "#{user.ap_id}/followers" in User.following(service_actor)
      assert {:ok, %Activity{} = activity} = Relay.unfollow(user.ap_id)
      assert activity.actor == "#{Pleroma.Web.Endpoint.url()}/relay"
      assert user.ap_id in activity.recipients
      assert activity.data["type"] == "Undo"
      assert activity.data["actor"] == service_actor.ap_id
      assert activity.data["to"] == [user.ap_id]
      refute "#{user.ap_id}/followers" in User.following(service_actor)
    end
  end

  describe "publish/1" do
    clear_config([:instance, :federating])

    test "returns error when activity not `Create` type" do
      activity = insert(:like_activity)
      assert Relay.publish(activity) == {:error, "Not implemented"}
    end

    test "returns error when activity not public" do
      activity = insert(:direct_note_activity)
      assert Relay.publish(activity) == {:error, false}
    end

    test "returns error when object is unknown" do
      activity =
        insert(:note_activity,
          data: %{
            "type" => "Create",
            "object" => "http://mastodon.example.org/eee/99541947525187367"
          }
        )

      assert capture_log(fn ->
               assert Relay.publish(activity) == {:error, nil}
             end) =~ "[error] error: nil"
    end

    test_with_mock "returns announce activity and publish to federate",
                   Pleroma.Web.Federator,
                   [:passthrough],
                   [] do
      Pleroma.Config.put([:instance, :federating], true)
      service_actor = Relay.get_actor()
      note = insert(:note_activity)
      assert {:ok, %Activity{} = activity, %Object{} = obj} = Relay.publish(note)
      assert activity.data["type"] == "Announce"
      assert activity.data["actor"] == service_actor.ap_id
      assert activity.data["object"] == obj.data["id"]
      assert called(Pleroma.Web.Federator.publish(activity))
    end

    test_with_mock "returns announce activity and not publish to federate",
                   Pleroma.Web.Federator,
                   [:passthrough],
                   [] do
      Pleroma.Config.put([:instance, :federating], false)
      service_actor = Relay.get_actor()
      note = insert(:note_activity)
      assert {:ok, %Activity{} = activity, %Object{} = obj} = Relay.publish(note)
      assert activity.data["type"] == "Announce"
      assert activity.data["actor"] == service_actor.ap_id
      assert activity.data["object"] == obj.data["id"]
      refute called(Pleroma.Web.Federator.publish(activity))
    end
  end
end