defmodule Ami.UserAnswer do
  use Ecto.Schema

  import Ecto.Changeset

  alias Ami.{
    CoursePeriod,
    Quiz,
    Answer,
    User,
    Question
  }

  schema "user_answers" do
    field(:created_at, :utc_datetime)
    field(:updated_at, :utc_datetime)

    belongs_to(:user, User)
    belongs_to(:quiz, Quiz)
    belongs_to(:answer, Answer)
    belongs_to(:question, Question)
    belongs_to(:course_period, CoursePeriod)
  end

  def changeset(struct, params) do
    struct
    |> cast(
      %{
        user_id: params[:user_id],
        answer_id: params[:answer_id],
        course_period_id: params[:course_period_id],
        question_id: params[:question_id],
        quiz_id: params[:quiz_id]
      },
      [:user_id, :answer_id, :course_period_id, :question_id, :quiz_id]
    )
    |> cast(%{created_at: DateTime.utc_now(), updated_at: DateTime.utc_now()}, [
      :created_at,
      :updated_at
    ])
  end
end