plug_indie/lib/response.ex

defmodule PlugIndie.Response do
  import Plug.Conn

  def send_content(conn, content) do
    json_encoder = conn.private[:plug_micropub][:json_encoder]
    body = json_encoder.encode!(content)

    conn
    |> put_resp_content_type("application/json")
    |> send_resp(:ok, body)
  end

  def send_error(conn, {:error, error}) do
    body = %{error: error}
    _send_error(conn, body)
  end

  def send_error(conn, {:error, error, description}) do
    body = %{error: error, error_description: description}
    _send_error(conn, body)
  end

  defp _send_error(conn, body) do
    json_encoder = conn.private[:plug_micropub][:json_encoder]

    code = get_error_code(body.error)
    body = json_encoder.encode!(body)

    conn
    |> put_resp_content_type("application/json")
    |> send_resp(code, body)
  end

  defp get_error_code(:insufficient_scope), do: :unauthorized
  defp get_error_code(:invalid_request), do: :bad_request
  defp get_error_code(:request_error), do: :internal_server_error
  defp get_error_code(code), do: code
end