Send email notifications when a participation is approved/rejected

Also handles participant status :rejected instead of deleting the
participation

Closes #164

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

lib/service/activity_pub/activity.ex

@@ -8,7 +8,6 @@ defmodule Mobilizon.Service.ActivityPub.Activity do
           local: boolean,
           actor: Actor.t(),
           recipients: [String.t()]
-          # notifications: [???]
         }
 
   defstruct [
@@ -16,6 +15,5 @@ defmodule Mobilizon.Service.ActivityPub.Activity do
     :local,
     :actor,
     :recipients
-    # :notifications
   ]
 end

lib/service/activity_pub/activity_pub.ex

@@ -454,7 +454,8 @@ defmodule Mobilizon.Service.ActivityPub do
            {:only_organizer, Participant.is_not_only_organizer(event_id, actor_id)},
          {:ok, %Participant{} = participant} <-
            Mobilizon.Events.get_participant(event_id, actor_id),
-         {:ok, %Participant{} = participant} <- Mobilizon.Events.delete_participant(participant),
+         {:ok, %Participant{} = participant} <-
+           Events.delete_participant(participant),
          leave_data <- %{
            "type" => "Leave",
            # If it's an exclusion it should be something else

lib/service/activity_pub/transmogrifier.ex

@@ -14,6 +14,7 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
   alias Mobilizon.Events.{Comment, Event, Participant}
   alias Mobilizon.Service.ActivityPub
   alias Mobilizon.Service.ActivityPub.{Converter, Convertible, Utils, Visibility}
+  alias MobilizonWeb.Email.Participation
 
   require Logger
 
@@ -543,10 +544,8 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     end
   end
 
-  @doc """
-  Handle incoming `Accept` activities wrapping a `Join` activity on an event
-  """
-  def do_handle_incoming_accept_join(join_object, %Actor{} = actor_accepting) do
+  # Handle incoming `Accept` activities wrapping a `Join` activity on an event
+  defp do_handle_incoming_accept_join(join_object, %Actor{} = actor_accepting) do
     with {:join_event,
           {:ok,
            %Participant{role: :not_approved, actor: actor, id: join_id, event: event} =
@@ -566,7 +565,9 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
              "#{MobilizonWeb.Endpoint.url()}/accept/join/#{join_id}"
            ),
          {:ok, %Participant{role: :participant}} <-
-           Events.update_participant(participant, %{"role" => :participant}) do
+           Events.update_participant(participant, %{"role" => :participant}),
+         :ok <-
+           Participation.send_emails_to_local_user(participant) do
       {:ok, activity, participant}
     else
       {:join_event, {:ok, %Participant{role: :participant}}} ->
@@ -591,10 +592,8 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     end
   end
 
-  @doc """
-  Handle incoming `Reject` activities wrapping a `Join` activity on an event
-  """
-  def do_handle_incoming_reject_join(join_object, %Actor{} = actor_accepting) do
+  # Handle incoming `Reject` activities wrapping a `Join` activity on an event
+  defp do_handle_incoming_reject_join(join_object, %Actor{} = actor_accepting) do
     with {:join_event,
           {:ok,
            %Participant{role: :not_approved, actor: actor, id: join_id, event: event} =
@@ -613,8 +612,9 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
              },
              "#{MobilizonWeb.Endpoint.url()}/reject/join/#{join_id}"
            ),
-         {:ok, %Participant{}} <-
-           Events.delete_participant(participant) do
+         {:ok, %Participant{role: :rejected} = participant} <-
+           Events.update_participant(participant, %{"role" => :rejected}),
+         :ok <- Participation.send_emails_to_local_user(participant) do
       {:ok, activity, participant}
     else
       {:join_event, {:ok, %Participant{role: :participant}}} ->