defmodule NDCEx do
  require HTTPotion
  require Logger

  def request(method, params) do
    NDCEx.Message.Base.build_document(method, params)
    |> rest_call_with_message(params)
  end

  def rest_call_with_message(xml, params) do
    case HTTPotion.post(params[:host][:url], [body: xml, headers: params[:rest][:headers], timeout: 30000 ]) do
      %HTTPotion.Response{body: body, headers: _headers, status_code: 200 } ->
        {:ok, remove_soap_tags(body)}
      %HTTPotion.Response{body: body, headers: _headers, status_code: _status_code } ->
        {:error, remove_soap_tags(body)}
      %HTTPotion.Response{status_code: 404} ->
        {:error, error_message("Request does not exist")}
      _ ->
        {:error, error_message("Unknown Error")}
    end
  end

  defp remove_soap_tags(doc) do
    remove_tag(doc, "<soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">")
    remove_tag(doc, "<soap:Body>")
    remove_tag(doc, "</soap:Body>")
    remove_tag(doc, "</soap:Envelope>")
  end

  defp error_message(message), do: "<error><message>#{message}</message></error>"
  def get_mix_config(key) when is_atom(key), do: Application.get_env(:ndc_ex_sdk, key)
  defp remove_tag(doc, tag), do: String.replace(doc, tag, "")
end