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bitcoin_accounting

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From Bitcoin blockchain's data to human understandable format

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bitcoin_accounting lib bitcoin_accounting get_book_entries.ex
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lib/bitcoin_accounting/get_book_entries.ex 

defmodule BitcoinAccounting.GetBookEntries do

  @execute_defaults %{empty_address_count: 20}



  alias BitcoinAccounting.GetBlockEntries.TradeSummary



  @spec from_xpub(binary(), list()) :: list()

  def from_xpub(xpub, opts \\ []) do

    %{empty_address_count: empty_address_count} = Enum.into(opts, @execute_defaults)



    %{

      change: change_entries,

      receive: receive_entries

    } = BitcoinAccounting.get_book_entries(xpub, gap_limit_stop: empty_address_count)



    receive_entries = flatten(receive_entries, :receive)

    change_entries = flatten(change_entries, :change)



    (receive_entries ++ change_entries)

    |> TradeSummary.from_entries()

  end



  defp flatten(entries, receive_or_change) do

    entries

    |> Enum.map(fn entry -> to_new_structure(entry, receive_or_change) end)

    |> Enum.concat()

  end



  defp to_new_structure(entry, receive_or_change) do

    entry.history

    |> Enum.map(fn history ->

      history

      |> Map.put(:type, receive_or_change)

      |> Map.put(:address, entry.address)

      |> Map.put(:change?, entry.change?)

      |> Map.put(:index, entry.index)

    end)

  end

end