defmodule Ami.Score do
  use Ecto.Schema

  import Ecto.Changeset

  alias Ami.{
    Enrollment,
    Course,
    CoursePeriod,
    Quiz,
    User,
    Repo
  }

  schema "scores" do
    field(:value, :integer)
    field(:answers_correct, :integer)
    field(:total_questions, :integer)
    field(:results, :string)
    field(:created_at, :utc_datetime)
    field(:updated_at, :utc_datetime)

    belongs_to(:quiz, Quiz)
    belongs_to(:user, User)
    belongs_to(:enrollment, Enrollment)
    belongs_to(:course, Course)
    belongs_to(:course_period, CoursePeriod)
  end

  def find(quiz_id, enrollment_id),
    do: Repo.get_by(__MODULE__, quiz_id: quiz_id, enrollment_id: enrollment_id)

  def insert_changeset(struct, params) do
    struct
    |> cast(
      %{
        value: params[:value],
        answers_correct: params[:answers_correct],
        total_questions: params[:total_questions]
      },
      [:value, :answers_correct, :total_questions]
    )
    |> cast(%{created_at: DateTime.utc_now(), updated_at: DateTime.utc_now()}, [
      :created_at,
      :updated_at
    ])
    |> cast(
      %{
        quiz_id: params[:quiz_id],
        user_id: params[:user_id],
        enrollment_id: params[:enrollment_id]
      },
      [:quiz_id, :user_id, :enrollment_id]
    )
    |> cast(%{course_id: params[:course_id], course_period_id: params[:course_period_id]}, [
      :course_id,
      :course_period_id
    ])
  end

  def update_changeset(struct, params) do
    struct
    |> cast(
      %{
        value: params[:value],
        answers_correct: params[:answers_correct],
        total_questions: params[:total_questions]
      },
      [:value, :answers_correct, :total_questions]
    )
    |> cast(%{updated_at: DateTime.utc_now()}, [:updated_at])
  end
end