#pragma once

#include <string>
#include <fstream>
#include <mutex>
#include <memory>

enum class LogLevel {
    LOG_LEVEL_INFO,
    LOG_LEVEL_WARNING,
    LOG_LEVEL_ERROR,
    LOG_LEVEL_DEBUG
};

class Logger {
private:
    static std::unique_ptr<Logger> instance_;
    static std::mutex mutex_;
    
    std::ofstream log_file_;
    std::mutex file_mutex_;
    std::string log_file_path_;
    
    Logger(const std::string& log_file_path);
    
public:
    static Logger* GetInstance(const std::string& log_file_path = "");
    
    void Log(LogLevel level, const std::string& message);
    void LogInfo(const std::string& message);
    void LogWarning(const std::string& message);
    void LogError(const std::string& message);
    void LogDebug(const std::string& message);
    
    ~Logger();
    
    // 禁用拷贝构造和赋值
    Logger(const Logger&) = delete;
    Logger& operator=(const Logger&) = delete;
};

// 便利宏
#define LOG_INFO(msg) Logger::GetInstance()->LogInfo(msg)
#define LOG_WARNING(msg) Logger::GetInstance()->LogWarning(msg)
#define LOG_ERROR(msg) Logger::GetInstance()->LogError(msg)
#define LOG_DEBUG(msg) Logger::GetInstance()->LogDebug(msg)