Local data worker improvements (#66)

* Adds new worker for backfilling data

* Adds backfill job to startup tasks

test/pinchflat/workers/data_backfill_worker_test.exs

@@ -0,0 +1,70 @@
+defmodule Pinchflat.Workers.DataBackfillWorkerTest do
+  use Pinchflat.DataCase
+
+  import Pinchflat.MediaFixtures
+
+  alias Pinchflat.Workers.DataBackfillWorker
+  alias Pinchflat.Workers.FilesystemDataWorker
+
+  describe "cancel_pending_backfill_jobs/0" do
+    test "cancels all pending backfill jobs" do
+      %{}
+      |> DataBackfillWorker.new()
+      |> Repo.insert_unique_job()
+
+      assert_enqueued(worker: DataBackfillWorker)
+
+      DataBackfillWorker.cancel_pending_backfill_jobs()
+
+      refute_enqueued(worker: DataBackfillWorker)
+    end
+
+    test "does not cancel jobs for other workers" do
+      %{id: 0}
+      |> FilesystemDataWorker.new()
+      |> Repo.insert_unique_job()
+
+      assert_enqueued(worker: FilesystemDataWorker)
+
+      DataBackfillWorker.cancel_pending_backfill_jobs()
+
+      assert_enqueued(worker: FilesystemDataWorker)
+    end
+  end
+
+  describe "perform/1" do
+    setup do
+      DataBackfillWorker.cancel_pending_backfill_jobs()
+
+      :ok
+    end
+
+    test "reschedules itself once complete" do
+      perform_job(DataBackfillWorker, %{})
+
+      assert_enqueued(worker: DataBackfillWorker, scheduled_at: now_plus(60, :minutes))
+    end
+  end
+
+  describe "perform/1 when testing backfill_shorts_data" do
+    test "sets short_form_content to true for media items with shorts in the URL" do
+      media_item = media_item_with_attachments(%{original_url: "https://example.com/shorts/123"})
+
+      refute media_item.short_form_content
+
+      perform_job(DataBackfillWorker, %{})
+
+      assert Repo.reload!(media_item).short_form_content
+    end
+
+    test "does not set short_form_content to true for media items without shorts in the URL" do
+      media_item = media_item_with_attachments(%{original_url: "https://example.com/longs/123"})
+
+      refute media_item.short_form_content
+
+      perform_job(DataBackfillWorker, %{})
+
+      refute Repo.reload!(media_item).short_form_content
+    end
+  end
+end