defmodule TopPosterServer.User do
  use Ecto.Schema
  import Ecto.Changeset

  @type t :: %__MODULE__{
          id: String.t(),
          posts: non_neg_integer()
        }

  @primary_key {:id, :string, []}

  schema "users" do
    field :posts, :integer, default: 0
  end

  def changeset(user, params \\ %{}) do
    user
    |> cast(params, [:id, :posts])
    |> validate_required([:id, :posts])
  end
end