Added basic Oban job for indexing

config/config.exs

@@ -30,7 +30,8 @@ config :pinchflat, PinchflatWeb.Endpoint,
 config :pinchflat, Oban,
   repo: Pinchflat.Repo,
   plugins: [Oban.Plugins.Pruner],
-  queues: [default: 10]
+  # TODO: consider making this an env var or something?
+  queues: [default: 10, media_indexing: 2, media_fetching: 2]
 
 # Configures the mailer
 #

lib/pinchflat/workers/media_indexing_worker.ex

@@ -0,0 +1,17 @@
+defmodule Pinchflat.Workers.MediaIndexingWorker do
+  use Oban.Worker, queue: :media_indexing
+
+  alias Pinchflat.MediaSource
+
+  @impl Oban.Worker
+  # This `channel_id` is the ID of the channel _record_ in
+  # the database, not the ID of the channel on YouTube.
+  # TODO: test
+  def perform(%Oban.Job{args: %{"channel_id" => channel_id}}) do
+    channel_id
+    |> MediaSource.get_channel!()
+    |> MediaSource.index_media_items()
+
+    :ok
+  end
+end