defmodule ExShopifySchema.Graphql.Float do
  @moduledoc "Represents signed double-precision fractional values as specified by [IEEE 754](https://en.wikipedia.org/wiki/IEEE_floating_point)."

  @type t() :: float()

  use Ecto.Type

  @impl Ecto.Type
  def type, do: :float

  @impl Ecto.Type
  def cast(nil), do: {:ok, nil}
  # NOTE: Numbers in JSON can be an integer or a floating point.
  def cast(int) when is_integer(int), do: {:ok, int / 1}
  def cast(float) when is_float(float), do: {:ok, float}
  def cast(_data), do: :error

  @impl Ecto.Type
  def load(data), do: cast(data)

  @impl Ecto.Type
  def dump(nil), do: {:ok, nil}
  def dump(float) when is_float(float), do: {:ok, float}
  def dump(_data), do: :error
end