Start integrating playlist support (#13)

* [WIP] updated the output of VideoCollection to include playlists

* Updated source's name to collection_name; supported playlist ID/name fetching

* Hooked up collection_type to form; refactored enqueue_pending_media_downloads

* Added friendly_name to form

* Added media profile link to source view

* Updates comment

test/pinchflat/tasks/source_tasks_test.exs

@@ -2,11 +2,14 @@ defmodule Pinchflat.Tasks.SourceTasksTest do
   use Pinchflat.DataCase
 
   import Pinchflat.TasksFixtures
+  import Pinchflat.MediaFixtures
   import Pinchflat.MediaSourceFixtures
 
+  alias Pinchflat.Tasks
   alias Pinchflat.Tasks.Task
   alias Pinchflat.Tasks.SourceTasks
   alias Pinchflat.Workers.MediaIndexingWorker
+  alias Pinchflat.Workers.VideoDownloadWorker
 
   describe "kickoff_indexing_task/1" do
     test "it does not schedule a job if the interval is <= 0" do
@@ -42,4 +45,35 @@ defmodule Pinchflat.Tasks.SourceTasksTest do
       assert_raise Ecto.NoResultsError, fn -> Repo.reload!(task) end
     end
   end
+
+  describe "enqueue_pending_media_downloads/1" do
+    test "it enqueues a job for each pending media item" do
+      source = source_fixture()
+      media_item = media_item_fixture(source_id: source.id, media_filepath: nil)
+
+      assert :ok = SourceTasks.enqueue_pending_media_downloads(source)
+
+      assert_enqueued(worker: VideoDownloadWorker, args: %{"id" => media_item.id})
+    end
+
+    test "it does not enqueue a job for media items with a filepath" do
+      source = source_fixture()
+      _media_item = media_item_fixture(source_id: source.id, media_filepath: "some/filepath.mp4")
+
+      assert :ok = SourceTasks.enqueue_pending_media_downloads(source)
+
+      refute_enqueued(worker: VideoDownloadWorker)
+    end
+
+    test "it attaches a task to each enqueued job" do
+      source = source_fixture()
+      media_item = media_item_fixture(source_id: source.id, media_filepath: nil)
+
+      assert [] = Tasks.list_tasks_for(:media_item_id, media_item.id)
+
+      assert :ok = SourceTasks.enqueue_pending_media_downloads(source)
+
+      assert [_] = Tasks.list_tasks_for(:media_item_id, media_item.id)
+    end
+  end
 end