#ifndef QLOGMANAGER_H
#define QLOGMANAGER_H
#include <QObject>
#include <QThread>
#include <QFile>
#include <QMutex>
#include <QSemaphore>
#include <QSharedPointer>
#include <QQueue>
#include <QDateTime>
#include <QDir>
#include <QFileInfo>
#include <QtCore/qatomic.h>
#include <QMap>
class QLogManager : public QObject
{
	Q_OBJECT
public:
	enum LogLevel {
		SQ_DEBUG = 0,
		SQ_INFO,
		SQ_WARNING,
		SQ_ERROR,
		SQ_FATAL
	};
	static QLogManager* Instance();
	static void destroyInstance();
	void setLogLevel(LogLevel level);
	void log(LogLevel level, const QString& message, const QString& module = QString());
	void flush();
signals:
	void newLog(LogLevel level, const QString& message);
protected:
	explicit QLogManager(QObject* parent = nullptr);
	~QLogManager() override;
private:
	void processLogs();
	void writeToFile(LogLevel level, const QString& logLine);
	void rotateLogFile(LogLevel level);
	void cleanOldLogs();
	QString getLogFileName(LogLevel level);
	struct LogEntry {
		LogLevel level;
		QString message;
		qint64 timestamp;
	};
	class ThreadSafeQueue {
	public:
		void enqueue(const LogEntry& entry) {
			QMutexLocker locker(&m_mutex);
			m_queue.enqueue(entry);
		}
		bool dequeue(LogEntry& entry) {
			QMutexLocker locker(&m_mutex);
			if (m_queue.isEmpty()) {
				return false;
			}
			entry = m_queue.dequeue();
			return true;
		}
		bool isEmpty() const {
			QMutexLocker locker(&m_mutex);
			return m_queue.isEmpty();
		}
	private:
		QQueue<LogEntry> m_queue;
		mutable QMutex m_mutex;
	};
	static QBasicAtomicPointer<QLogManager> s_instance;
	static QMutex s_mutex;
	QDir m_logDirectory;
	LogLevel m_minLevel;
	QThread* m_workerThread;
	QSemaphore m_queueSemaphore;
	ThreadSafeQueue m_logQueue;
	QMap<LogLevel, QSharedPointer<QFile>> m_openFiles;
	bool m_running;
	static const int MAX_LOG_DAYS = 7;
	static const qint64 MAX_FILE_SIZE = 10 * 1024 * 1024; 
	static const int TIMESTAMP_CACHE_DURATION_MS = 100; 
};
#define LOG_DEBUG(message)    QLogManager::Instance()->log(QLogManager ::SQ_DEBUG, message, QString("%1::%2").arg(__FILE__).arg(__LINE__))
#define LOG_INFO(message)     QLogManager::Instance()->log(QLogManager ::SQ_INFO, message)
#define LOG_WARNING(message)  QLogManager::Instance()->log(QLogManager ::SQ_WARNING, message)
#define LOG_ERROR(message)    QLogManager::Instance()->log(QLogManager ::SQ_ERROR, message)
#define LOG_FATAL(message)    QLogManager::Instance()->log(QLogManager ::SQ_FATAL, message)
#endif