Logger.H

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/*
 * Copyright (c) 2024 Saud Zahir
 *
 * This file is part of deltaFlow.
 *
 * deltaFlow is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * deltaFlow is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with deltaFlow.  If not, see
 * <https://www.gnu.org/licenses/>.
 */
 
#ifndef LOGGER_H
#define LOGGER_H
 
#include <chrono>
#include <fmt/chrono.h>
#include <fmt/color.h>
#include <fstream>
#include <iostream>
#include <string>
 
#ifdef _WIN32
  #ifdef ERROR
    #undef ERROR
  #endif
#endif
 
enum class Level : uint8_t {
    NOTSET,    
    DEBUG,     
    INFO,      
    WARN,      
    ERROR,     
    CRITICAL   
};
 
#define LOG_DEBUG(msg, ...) Logger::getLogger().log(fmt::format(FMT_STRING(msg), ##__VA_ARGS__), Level::DEBUG)
#define LOG_INFO(msg, ...) Logger::getLogger().log(fmt::format(FMT_STRING(msg), ##__VA_ARGS__), Level::INFO)
#define LOG_WARN(msg, ...) Logger::getLogger().log(fmt::format(FMT_STRING(msg), ##__VA_ARGS__), Level::WARN)
#define LOG_ERROR(msg, ...) Logger::getLogger().log(fmt::format(FMT_STRING(msg), ##__VA_ARGS__), Level::ERROR)
#define LOG_CRITICAL(msg, ...) Logger::getLogger().log(fmt::format(FMT_STRING(msg), ##__VA_ARGS__), Level::CRITICAL)
#define LOG_MESSAGE(msg, ...) fmt::print("{}\n", fmt::format(FMT_STRING(msg), ##__VA_ARGS__))
 
class Logger final {
    public:
        static Logger& getLogger();
 
        void log(const std::string& msg, const Level& level);
 
    private:
        Level m_Level;              
        std::string m_FilePath;     
        std::ofstream file;         
 
        Logger(const std::string& name, Level level);
 
        ~Logger();
 
        // Disable copying
        Logger(const Logger&) = delete;
        Logger& operator=(const Logger&) = delete;
};
 
#endif