Improve relationship UI handling (#42)

* Added tabbed view; improved relationships for media profile

* Adds new maybe_limit method for queries

* Improves UI for media items, associated tasks

test/pinchflat/media_test.exs

@@ -64,6 +64,14 @@ defmodule Pinchflat.MediaTest do
 
       assert Media.list_pending_media_items_for(source) == []
     end
+
+    test "optionally accepts a limit" do
+      source = source_fixture()
+      media_item = media_item_fixture(%{source_id: source.id, media_filepath: nil})
+
+      assert Media.list_pending_media_items_for(source, limit: 1) == [media_item]
+      assert Media.list_pending_media_items_for(source, limit: 0) == []
+    end
   end
 
   describe "list_pending_media_items_for/1 when testing shorts" do
@@ -196,6 +204,15 @@ defmodule Pinchflat.MediaTest do
 
       assert Media.list_downloaded_media_items_for(source) == [media_item]
     end
+
+    test "optionally accepts a limit" do
+      source = source_fixture()
+      _media_item = media_item_fixture(%{source_id: source.id, media_filepath: nil})
+      media_item = media_item_fixture(%{source_id: source.id, media_filepath: "/video/#{Faker.File.file_name(:video)}"})
+
+      assert Media.list_downloaded_media_items_for(source, limit: 1) == [media_item]
+      assert Media.list_downloaded_media_items_for(source, limit: 0) == []
+    end
   end
 
   describe "search/1" do