Logger.h

#pragma once
 
// Standard.
#include <memory>
#include <filesystem>
#include <source_location>
 
// External.
#include "spdlog/spdlog.h"
 
namespace ne {
    class Logger {
    public:
        Logger(const Logger&) = delete;
        Logger& operator=(const Logger&) = delete;
        ~Logger();
 
        static Logger& get();
 
        static size_t getTotalWarningsProduced();
 
        static size_t getTotalErrorsProduced();
 
        void info(
            std::string_view sText,
            const std::source_location location = std::source_location::current()) const; // NOLINT
 
        void warn(
            std::string_view sText,
            const std::source_location location = std::source_location::current()) const; // NOLINT
 
        void error(
            std::string_view sText,
            const std::source_location location = std::source_location::current()) const; // NOLINT
 
        void flushToDisk();
 
        std::filesystem::path getDirectoryWithLogs() const;
 
    private:
        Logger();
 
        static std::string getDateTime();
 
        static void removeOldestLogFiles(const std::filesystem::path& sLogDirectory);
 
        std::unique_ptr<spdlog::logger> pSpdLogger = nullptr;
 
        std::filesystem::path sLoggerWorkingDirectory;
 
        inline static std::atomic<size_t> iTotalWarningsProduced{0};
 
        inline static std::atomic<size_t> iTotalErrorsProduced{0};
 
        inline static constexpr size_t iMaxLogFiles = 5;
 
        inline static const char* sLogFileExtension = ".log";
    };
} // namespace ne