WIP notification settings

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

lib/service/workers/legacy_notifier_builder.ex

@@ -0,0 +1,71 @@
+defmodule Mobilizon.Service.Workers.LegacyNotifierBuilder do
+  @moduledoc """
+  Worker to push legacy notifications
+  """
+
+  alias Mobilizon.{Actors, Events, Users}
+  alias Mobilizon.Activities.Activity
+  alias Mobilizon.Service.Notifier
+
+  use Mobilizon.Service.Workers.Helper, queue: "activity"
+
+  @impl Oban.Worker
+  def perform(%Job{args: args}) do
+    with {"legacy_notify", args} <- Map.pop(args, "op") do
+      activity = build_activity(args)
+
+      args
+      |> users_to_notify(args["author_id"])
+      |> Enum.each(&Notifier.notify(&1, activity, single_activity: true))
+    end
+  end
+
+  def build_activity(args) do
+    author = Actors.get_actor(args["author_id"])
+
+    %Activity{
+      type: String.to_existing_atom(args["type"]),
+      subject: String.to_existing_atom(args["subject"]),
+      subject_params: args["subject_params"],
+      inserted_at: DateTime.utc_now(),
+      object_type: String.to_existing_atom(args["object_type"]),
+      object_id: args["object_id"],
+      group: nil,
+      author: author
+    }
+  end
+
+  @spec users_to_notify(map(), integer() | String.t()) :: list(Users.t())
+  defp users_to_notify(
+         %{"subject" => "event_comment_mention", "mentions" => mentionned_actor_ids},
+         author_id
+       ) do
+    users_from_actor_ids(mentionned_actor_ids, author_id)
+  end
+
+  defp users_to_notify(
+         %{
+           "subject" => "participation_event_comment",
+           "subject_params" => subject_params
+         },
+         author_id
+       ) do
+    subject_params
+    |> Map.get("event_id")
+    |> Events.list_actors_participants_for_event()
+    |> Enum.map(& &1.id)
+    |> users_from_actor_ids(author_id)
+  end
+
+  @spec users_from_actor_ids(list(), integer() | String.t()) :: list(Users.t())
+  defp users_from_actor_ids(actor_ids, author_id) do
+    actor_ids
+    |> Enum.filter(&(&1 != author_id))
+    |> Enum.map(&Actors.get_actor/1)
+    |> Enum.filter(& &1)
+    |> Enum.map(& &1.user_id)
+    |> Enum.filter(& &1)
+    |> Enum.uniq()
+    |> Enum.map(&Users.get_user_with_settings!/1)
+  end
+end