defmodule Asciinema.Users.ApiToken do
  use Ecto.Schema
  import Ecto.Changeset
  alias Asciinema.Users.{ApiToken, User}

  schema "api_tokens" do
    field :token, :string
    field :revoked_at, Timex.Ecto.DateTime

    timestamps(inserted_at: :created_at)

    belongs_to :user, User
  end

  @uuid4 ~r/\A[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}\z/

  def create_changeset(%User{id: user_id}, token) do
    %ApiToken{user_id: user_id}
    |> change(%{token: token})
    |> validate_format(:token, @uuid4)
  end

  def revoke_changeset(%ApiToken{revoked_at: nil} = api_token) do
    change(api_token, %{revoked_at: Timex.now()})
  end
  def revoke_changeset(%ApiToken{} = api_token) do
    change(api_token)
  end
end