bingex

defmodule Bingex.Swap.Model.PositionUpdate do
  @moduledoc """
  Represents basic position update information.
  """

  import Bingex.{Helpers, Convertors}

  alias Bingex.Model.Order

  defstruct [
    :side,
    :symbol,
    :margin,
    :quantity,
    :average_price,
    :unrealized_pnl,
    :realized_pnl,
    :margin_mode
  ]

  @type t() :: %__MODULE__{
          side: nil | Order.position_side(),
          symbol: nil | binary(),
          margin: nil | float(),
          quantity: nil | float(),
          average_price: nil | float(),
          unrealized_pnl: nil | float(),
          realized_pnl: nil | float(),
          margin_mode: nil | Order.margin_mode()
        }

  @spec decode(map()) :: {:ok, t()} | :error
  def decode(%{} = data) do
    {:ok,
     %__MODULE__{
       side: get_and_transform(data, "ps", &decode_position_side/1),
       symbol: get_and_transform(data, "s", &to_non_empty_binary/1),
       margin: get_and_transform(data, "iw", &to_float/1),
       quantity: get_and_transform(data, "pa", &to_float/1),
       average_price: get_and_transform(data, "ep", &to_float/1),
       unrealized_pnl: get_and_transform(data, "up", &to_float/1),
       realized_pnl: get_and_transform(data, "cr", &to_float/1),
       margin_mode: get_and_transform(data, "mt", &decode_margin_mode/1)
     }}
  end

  def decode(_data), do: :error
end