Refactor modules into contexts (#78)

* [WIP] break out a few contexts, start refactoring fast index modules

* [WIP] more contexts, this time around slow indexing and downloads

* [WIP] got all tests passing

* [WIP] Added moduledocs

* Built a genserver to rename old jobs on boot

* Added a module naming check; moved things around

* Fixed specs

test/pinchflat/fast_indexing/fast_indexing_helpers_test.exs

@@ -0,0 +1,142 @@
+defmodule Pinchflat.FastIndexing.FastIndexingHelpersTest do
+  use Pinchflat.DataCase
+
+  import Mox
+  import Pinchflat.TasksFixtures
+  import Pinchflat.MediaFixtures
+  import Pinchflat.SourcesFixtures
+  import Pinchflat.ProfilesFixtures
+
+  alias Pinchflat.Tasks
+  alias Pinchflat.Tasks.Task
+  alias Pinchflat.Media.MediaItem
+  alias Pinchflat.Downloading.MediaDownloadWorker
+  alias Pinchflat.FastIndexing.MediaIndexingWorker
+  alias Pinchflat.FastIndexing.FastIndexingHelpers
+  alias Pinchflat.FastIndexing.FastIndexingWorker
+
+  setup :verify_on_exit!
+
+  @media_url "https://www.youtube.com/watch?v=test_1"
+
+  describe "kickoff_fast_indexing_task/1" do
+    test "it schedules a job" do
+      source = source_fixture()
+
+      assert {:ok, _} = FastIndexingHelpers.kickoff_fast_indexing_task(source)
+
+      assert_enqueued(worker: FastIndexingWorker, args: %{"id" => source.id})
+    end
+
+    test "it creates and attaches a task" do
+      source = source_fixture()
+
+      assert {:ok, %Task{} = task} = FastIndexingHelpers.kickoff_fast_indexing_task(source)
+
+      assert task.source_id == source.id
+    end
+
+    test "it deletes any fast indexing tasks for the source" do
+      source = source_fixture()
+      {:ok, job} = Oban.insert(FastIndexingWorker.new(%{"id" => source.id}))
+      task = task_fixture(source_id: source.id, job_id: job.id)
+
+      assert {:ok, _} = FastIndexingHelpers.kickoff_fast_indexing_task(source)
+
+      assert_raise Ecto.NoResultsError, fn -> Repo.reload!(task) end
+    end
+  end
+
+  describe "kickoff_indexing_tasks_from_youtube_rss_feed/1" do
+    setup do
+      {:ok, [source: source_fixture()]}
+    end
+
+    test "enqueues a new worker for each new media_id in the source's RSS feed", %{source: source} do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
+
+      assert :ok = FastIndexingHelpers.kickoff_indexing_tasks_from_youtube_rss_feed(source)
+
+      assert [worker] = all_enqueued(worker: MediaIndexingWorker)
+      assert worker.args["id"] == source.id
+      assert worker.args["media_url"] == "https://www.youtube.com/watch?v=test_1"
+    end
+
+    test "does not enqueue a new worker for the source's media IDs we already know about", %{source: source} do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
+      media_item_fixture(source_id: source.id, media_id: "test_1")
+
+      assert :ok = FastIndexingHelpers.kickoff_indexing_tasks_from_youtube_rss_feed(source)
+
+      refute_enqueued(worker: MediaIndexingWorker)
+    end
+  end
+
+  describe "index_and_enqueue_download_for_media_item/2" do
+    setup do
+      stub(YtDlpRunnerMock, :run, fn _url, _opts, _ot ->
+        {:ok, media_attributes_return_fixture()}
+      end)
+
+      {:ok, [source: source_fixture()]}
+    end
+
+    test "creates a new media item based on the URL", %{source: source} do
+      assert Repo.aggregate(MediaItem, :count) == 0
+      assert {:ok, _} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+      assert Repo.aggregate(MediaItem, :count) == 1
+    end
+
+    test "won't duplicate media_items based on media_id and source", %{source: source} do
+      assert {:ok, mi_1} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+      assert {:ok, mi_2} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+
+      assert Repo.aggregate(MediaItem, :count) == 1
+      assert mi_1.id == mi_2.id
+    end
+
+    test "enqueues a download job", %{source: source} do
+      assert {:ok, media_item} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+
+      assert_enqueued(worker: MediaDownloadWorker, args: %{"id" => media_item.id})
+    end
+
+    test "creates a download task record", %{source: source} do
+      assert {:ok, media_item} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+
+      assert [_] = Tasks.list_tasks_for(:media_item_id, media_item.id, "MediaDownloadWorker")
+    end
+
+    test "does not enqueue a download job if the source does not allow it" do
+      source = source_fixture(%{download_media: false})
+
+      assert {:ok, _} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+
+      refute_enqueued(worker: MediaDownloadWorker)
+    end
+
+    test "does not enqueue a download job if the media item does not match the format rules" do
+      profile = media_profile_fixture(%{shorts_behaviour: :exclude})
+      source = source_fixture(%{media_profile_id: profile.id})
+
+      stub(YtDlpRunnerMock, :run, fn _url, _opts, _ot ->
+        output =
+          Phoenix.json_library().encode!(%{
+            id: "video2",
+            title: "Video 2",
+            webpage_url: "https://example.com/shorts/video2",
+            was_live: true,
+            description: "desc2",
+            aspect_ratio: 1.67,
+            duration: 345.67,
+            upload_date: "20210101"
+          })
+
+        {:ok, output}
+      end)
+
+      assert {:ok, _media_item} = FastIndexingHelpers.index_and_enqueue_download_for_media_item(source, @media_url)
+      refute_enqueued(worker: MediaDownloadWorker)
+    end
+  end
+end