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#ifndef TEMPLAT_UTIL_LOG_TIMESPENT_H
#define TEMPLAT_UTIL_LOG_TIMESPENT_H

/* This file is part of TempLat, available at https://cosmolattice.github.io/templat .
   Copyright 2021-2026 The TempLat authors, see AUTHORS.md.
   Released under the MIT license, see LICENSE.md. */

// File info: Main contributor(s): Wessel Valkenburg, Year: 2019

#include <chrono>
#include <iostream>
#include "TempLat/util/tdd/tddmacros.h"

namespace TempLat
{

  class TimeSpent
  {
  public:
    // Put public methods here. These should change very little over time.
    TimeSpent() : mStart(now()) {}

    static auto getProcessAge() { return (now() - getProcessStart()).count(); }

    auto get() const { return (now() - mStart).count(); }

    friend std::ostream &operator<<(std::ostream &ostream, const TimeSpent &ts)
    {
      ostream << ts.get() << "ms";
      return ostream;
    }

  private:
    /* Put all member variables and private methods here. These may change arbitrarily. */
    std::chrono::milliseconds mStart;

    static std::chrono::milliseconds now()
    {
      return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch());
    }

    inline static std::chrono::milliseconds getProcessStart()
    {
      static std::chrono::milliseconds pStart = now();
      return pStart;
    };

  public:
    template <typename TestObjectUnknownHere> static inline void Test(TestObjectUnknownHere &tdd);
  };
} // namespace TempLat

#endif