defmodule SplitClient.Boundary.OrderedAttributes do
  # A way to have consistent ordering of attributes that
  # must be passed as JSON or used as cache keys
  @moduledoc false

  defstruct value: []

  def new(value) when is_map(value) do
    Enum.into(value, Keyword.new())
    |> new()
  end

  def new(value) do
    value = Enum.sort_by(value, &elem(&1, 0))
    %__MODULE__{value: value}
  end

  defimpl Jason.Encoder do
    def encode(%{value: value}, opts) do
      Jason.Encode.keyword(value, opts)
    end
  end
end