#ifndef H_ProgressTimer
#define H_ProgressTimer

#include <chrono>
#include <iostream>

/// @brief This class implements a progress timer that predicts how long a loop will take to complete.
class ProgressTimer {
    public:
        /// @brief Creates a new progress timer.
        /// @param num_iterations Number of iterations to perform.
        ProgressTimer(size_t num_iterations);

        /// @brief Increments the iteration counter and prints the progress.
        /// @return A string with the current progress.
        std::string increment();

        /// @brief Converts a number of seconds to a string with hours, minutes and seconds.
        /// @param seconds Total number of seconds (input).
        /// @return "hh:mm:ss.uuuuuu"
        static std::string seconds_to_hms_str(double seconds);

    private:
        std::chrono::steady_clock::time_point m_start;
        size_t m_num_iterations;
        size_t m_current_iteration;
};

#endif