# Copyright 2018-2019 OmiseGO Pte Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

defmodule EWallet.Web.V1.TransactionCalculationSerializer do
  @moduledoc """
  Serializes a transaction calculation into V1 JSON response format.
  """
  alias EWallet.Exchange.Calculation
  alias Utils.Helpers.DateFormatter
  alias EWallet.Web.V1.ExchangePairSerializer

  def serialize(%Calculation{} = calculation) do
    %{
      object: "transaction_calculation",
      from_amount: calculation.from_amount,
      from_token_id: calculation.from_token.id,
      to_amount: calculation.to_amount,
      to_token_id: calculation.to_token.id,
      actual_rate: calculation.actual_rate,
      exchange_pair: ExchangePairSerializer.serialize(calculation.pair),
      calculated_at: DateFormatter.to_iso8601(calculation.calculated_at)
    }
  end

  def serialize(nil), do: nil
end
