#ifndef PERFORMANCELOGGER_H
#define PERFORMANCELOGGER_H

#include <QString>
#include <QElapsedTimer>
#include <QVector>
#include <QFile>
#include <QTextStream>
#include <QDateTime>
#include <QDebug>
#include <QMutex>
#include <memory>

class PerformanceLogger
{
public:
    struct Record
    {
        QString category;
        QString name;
        qint64 elapsedMs = 0;
        QDateTime timestamp;
    };

    static PerformanceLogger &instance();

    void beginSession(const QString &sessionName = QString());
    void endSession();

    void log(const QString &category, const QString &name, qint64 elapsedMs);
    void printReport() const;
    void saveToFile(const QString &filePath) const;

    QString reportString() const;
    QVector<Record> records() const;
    void clear();

private:
    PerformanceLogger() = default;
    mutable QMutex m_mutex;
    QVector<Record> m_records;
    QString m_sessionName;
    bool m_sessionActive = false;
};

class ScopedPerfTimer
{
public:
    ScopedPerfTimer(const QString &category, const QString &name);
    ~ScopedPerfTimer();

private:
    QString m_category;
    QString m_name;
    QElapsedTimer m_timer;
};

#define SCOPED_PERF_TIMER(category, name) ScopedPerfTimer _perfTimer(category, name)

#endif // PERFORMANCELOGGER_H