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/**
* @file message.hpp
* @author Felix Morgner (felix.morgner@gmail.com)
* @since 1.0.0
*/
#ifndef WANDA_MESSAGE_HPP
#define WANDA_MESSAGE_HPP
#include <cstddef>
#include <istream>
#include <optional>
#include <string>
namespace wanda
{
inline namespace v1
{
/**
* @brief The version argument for the hello message reflecting the current version
*/
auto constexpr message_argument_hello = "1.0.0";
} // namespace v1
/**
* @brief A tag to mark messages originating from the controller
*/
auto constexpr message_source_controller = "C";
/**
* @brief A tag to mark messages originating from the daemon
*/
auto constexpr message_source_daemon = "D";
/**
* @brief The command of the hello message
*/
auto constexpr message_command_hello = "HELLO";
/**
* @brief A control protocol message, consisting of a @p source, @p command, and @p arguments
*/
struct message
{
/**
* @brief Serialize this message into a string
*/
explicit operator std::string() const;
/**
* @brief Get the size of the message as if it was serialized
*/
std::size_t size() const;
/**
* @brief The source of the message
*/
std::string source;
/**
* @brief The command of the message
*/
std::string command;
/**
* @brief The arguments of the message command
*/
std::optional<std::string> argument;
};
/**
* @brief Deserialize a message from the given stream
*/
std::istream & operator>>(std::istream & in, message & message);
/**
* @brief Serialize a message to the given stream
*/
std::ostream & operator<<(std::ostream & out, message const & message);
} // namespace wanda
#endif
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