defmodule StellarBase.XDR.InnerTransactionResultPair do
  @moduledoc """
  Representation of Stellar `InnerTransactionResultPair` type.
  """
  alias StellarBase.XDR.{Hash, InnerTransactionResult}

  @behaviour XDR.Declaration

  @struct_spec XDR.Struct.new(transaction_hash: Hash, result: InnerTransactionResult)

  @type t :: %__MODULE__{transaction_hash: Hash.t(), result: InnerTransactionResult.t()}

  defstruct [:transaction_hash, :result]

  @spec new(transaction_hash :: Hash.t(), result :: InnerTransactionResult.t()) :: t()
  def new(%Hash{} = transaction_hash, %InnerTransactionResult{} = result),
    do: %__MODULE__{transaction_hash: transaction_hash, result: result}

  @impl true
  def encode_xdr(%__MODULE__{transaction_hash: transaction_hash, result: result}) do
    [transaction_hash: transaction_hash, result: result]
    |> XDR.Struct.new()
    |> XDR.Struct.encode_xdr()
  end

  @impl true
  def encode_xdr!(%__MODULE__{transaction_hash: transaction_hash, result: result}) do
    [transaction_hash: transaction_hash, result: result]
    |> XDR.Struct.new()
    |> XDR.Struct.encode_xdr!()
  end

  @impl true
  def decode_xdr(bytes, struct \\ @struct_spec)

  def decode_xdr(bytes, struct) do
    case XDR.Struct.decode_xdr(bytes, struct) do
      {:ok, {%XDR.Struct{components: [transaction_hash: transaction_hash, result: result]}, rest}} ->
        {:ok, {new(transaction_hash, result), rest}}

      error ->
        error
    end
  end

  @impl true
  def decode_xdr!(bytes, struct \\ @struct_spec)

  def decode_xdr!(bytes, struct) do
    {%XDR.Struct{components: [transaction_hash: transaction_hash, result: result]}, rest} =
      XDR.Struct.decode_xdr!(bytes, struct)

    {new(transaction_hash, result), rest}
  end
end