Federate participations

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/service/activity_pub/converters/comment.ex

@@ -10,8 +10,6 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Comment do
   alias Mobilizon.Events.Event
   alias Mobilizon.Service.ActivityPub.Converter
   alias Mobilizon.Service.ActivityPub
-  alias MobilizonWeb.Router.Helpers, as: Routes
-  alias MobilizonWeb.Endpoint
   require Logger
 
   @behaviour Converter

lib/service/activity_pub/converters/participant.ex

@@ -0,0 +1,29 @@
+defmodule Mobilizon.Service.ActivityPub.Converters.Participant do
+  @moduledoc """
+  Flag converter
+
+  This module allows to convert reports from ActivityStream format to our own internal one, and back.
+
+  Note: Reports are named Flag in AS.
+  """
+  alias Mobilizon.Events.Participant, as: ParticipantModel
+
+  @doc """
+  Convert an event struct to an ActivityStream representation
+  """
+  @spec model_to_as(ParticipantModel.t()) :: map()
+  def model_to_as(%ParticipantModel{} = participant) do
+    %{
+      "type" => "Join",
+      "id" => participant.url,
+      "actor" => participant.actor.url,
+      "object" => participant.event.url
+    }
+  end
+
+  defimpl Mobilizon.Service.ActivityPub.Convertible, for: Mobilizon.Events.Participant do
+    alias Mobilizon.Service.ActivityPub.Converters.Participant, as: ParticipantConverter
+
+    defdelegate model_to_as(event), to: ParticipantConverter
+  end
+end