defmodule Ami.LessonActivity do
  use Ecto.Schema

  import Ecto.{
    Query,
    Changeset
  }

  alias Ami.{
    Lesson,
    ResourceAttachment
  }

  schema "lesson_activities" do
    field(:is_final_assignment, :boolean)
    field(:grade_value, :integer, default: 0)
    timestamps()

    belongs_to(:lesson, Lesson)
    belongs_to(:resource_attachment, ResourceAttachment)
  end

  def changeset(struct, params \\ %{}) do
    struct
    |> cast(params, [:lesson_id, :resource_attachment_id])
    |> cast_assoc(:resource_attachment)
  end
end