Absinthe middleware handle to handle errors

absinthe-middleware-handle-errors.ex

defmodule Idp.Middlewares.HandleAPIErrors do
  @behaviour Absinthe.Middleware
  alias Idp.EctoHelpers

  def call(resolution, _config) do
    errors =
      resolution
      |> Map.get(:errors)
      |> Enum.flat_map(&process_errors/1)

    %{resolution | errors: errors}
  end

  defp process_errors(%Ecto.Changeset{} = changeset) do
    EctoHelpers.process_errors(changeset)
  end

  defp process_errors(error), do: [error]
end