#ifndef WANDA_MESSAGE_HPP
#define WANDA_MESSAGE_HPP

#include <cstddef>
#include <istream>
#include <optional>
#include <string>

namespace wanda
{
  inline namespace v1
  {
    auto constexpr message_argument_hello = "1.0.0";
  }

  auto constexpr message_source_controller = "C";
  auto constexpr message_source_daemon = "D";

  auto constexpr message_command_hello = "HELLO";

  struct message
  {
    explicit operator std::string() const;

    std::size_t size() const;

    std::string source;
    std::string command;
    std::optional<std::string> argument;
  };

  std::istream & operator>>(std::istream & in, message & message);
  std::ostream & operator<<(std::ostream & out, message const & message);

}  // namespace wanda

#endif