defmodule MusicLibrary.CollectionTest do
  use MusicLibrary.DataCase

  import MusicLibrary.Fixtures.Records

  alias MusicLibrary.Collection

  defp fill_collection(_) do
    # Purchased dates are in ascending order
    records = [
      record_with_artist("Marillion", %{
        title: "Brave",
        format: :cd,
        type: :album,
        purchased_at: ~U[2024-12-27 16:50:57Z]
      }),
      record_with_artist("Marillion", %{
        title: "Brave (Remastered)",
        format: :vinyl,
        type: :live,
        purchased_at: ~U[2024-12-28 16:50:57Z]
      }),
      record_with_artist("Marillion", %{
        format: :vinyl,
        type: :ep,
        purchased_at: ~U[2024-12-29 16:50:57Z]
      }),
      record_with_artist("Marillion", %{
        title: "Brave",
        format: :dvd,
        purchased_at: nil,
        type: :live
      })
    ]

    %{collection: records}
  end

  describe "search_records/2" do
    setup [:fill_collection]

    test "returns matching records, excluding wishlisted records" do
      assert [%{title: "Brave"}, %{title: "Brave (Remastered)"}] =
               Collection.search_records("brave")
    end

    test "it respects limit" do
      assert [%{title: "Brave"}] = Collection.search_records("brave", limit: 1)
    end

    test "it respects offset" do
      [first_match] = Collection.search_records("brave", limit: 1)
      [second_match] = Collection.search_records("brave", limit: 1, offset: 1)
      assert first_match !== second_match
    end

    test "it respects order" do
      assert [%{title: "Brave (Remastered)"}, %{title: "Brave"}] =
               Collection.search_records("brave", order: :purchase)

      assert [%{title: "Brave"}, %{title: "Brave (Remastered)"}] =
               Collection.search_records("brave", order: :alphabetical)
    end
  end

  describe "search_records_count/1" do
    setup [:fill_collection]

    test "returns the count of matching records, excluding wishlisted records" do
      assert 2 == Collection.search_records_count("brave")
    end
  end

  describe "count_records_by_format/0" do
    setup [:fill_collection]

    test "returns the count of records in the collection by format, excluding wishlisted records" do
      assert [vinyl: 2, cd: 1] == Collection.count_records_by_format()
    end
  end

  describe "count_records_by_type/0" do
    setup [:fill_collection]

    test "returns the count of records in the collection by type, excluding wishlisted records" do
      assert [album: 1, ep: 1, live: 1] == Collection.count_records_by_type()
    end
  end

  describe "get_latest_record!/0" do
    setup [:fill_collection]

    test "returns the most recently purchased record" do
      expected_record = record(%{purchased_at: DateTime.utc_now()})
      most_recent_purchase = Collection.get_latest_record!()

      assert expected_record.id == most_recent_purchase.id
    end
  end

  describe "get_random_record!/0" do
    setup [:fill_collection]

    test "returns a random record", %{collection: collection} do
      # NOTE: we can't control randomness in the test, because the `RANDOM()` function
      # in SQLite doesn't support a seed.
      random_record = Collection.get_latest_record!()
      collection_ids = Enum.map(collection, & &1.id)

      assert random_record.id in collection_ids
    end
  end
end