logger.hpp

#ifndef __COMMON_LOGGER_HPP__
#define __COMMON_LOGGER_HPP__
 
#include <source_location>
#include <string>
#include <string_view>
#include <type_traits>
 
namespace IO
{
 
  namespace AnsiCode
  {
    constexpr auto blue = "\033[34m";
    constexpr auto red = "\033[31m";
    constexpr auto reset = "\033[0m";
    constexpr auto green = "\033[32m";
  } // namespace AnsiCode
 
  namespace Unicode
  {
    constexpr auto red_circle = "\U0001F534";
  } // namespace Unicode

  class Logger
  {
  public:
    Logger() = default;
    Logger(const Logger&) = default;
    Logger(Logger&&) = default;
    Logger& operator=(const Logger&) = default;
    Logger& operator=(Logger&&) = default;
    virtual ~Logger() = default;

    virtual void debug(std::string_view message) = 0;

    virtual void print(std::string_view prefix, std::string_view message) = 0;

    virtual void alert(std::string_view prefix, std::string_view message) = 0;

    virtual void error(std::string_view message,
                       std::source_location location
                       = std::source_location::current())
        = 0;

    virtual void raw_log(std::string_view message) = 0;

    virtual void toggle_debug() noexcept = 0;

    virtual void toggle_print() noexcept = 0;

    virtual void toggle_alert() noexcept = 0;

    virtual void toggle_error() noexcept = 0;

    virtual void toggle_all() noexcept = 0;
  };
 
  // template <typename... MsgType>
  // std::string
  // format(MsgType&&... msgs)
  // {
  //   std::string result;
  //   (result += ... += std::forward<MsgType>(msgs));
  //   return result;
  // }
  //
  template <typename MsgType>
    requires(std::is_integral_v<std::remove_cvref_t<MsgType>>
             || std::is_floating_point_v<std::remove_cvref_t<MsgType>>)
  void
  _format(std::string& result, MsgType&& msg)
  {
    result += std::to_string(std::forward<MsgType>(msg));
  }
 
  template <typename MsgType>
    requires(!(std::is_integral_v<std::remove_cvref_t<MsgType>>
               || std::is_floating_point_v<std::remove_cvref_t<MsgType>>))
  void
  _format(std::string& result, MsgType&& msg)
  {
 
    result += std::forward<MsgType>(msg);
  }
 
  template <typename... MsgType>
  std::string
  format(MsgType&&... msgs)
  {
    std::string result;
    (_format(result, std::forward<MsgType>(msgs)), ...);
    return result;
  }
 
} // namespace IO
 
#endif