simulation.hpp

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#pragma once
 
#include "common.hpp"
#include "loader.hpp"
#include "mps.hpp"
#include "saver.hpp"
 
#include <chrono>
#include <filesystem>
#include <iomanip>
#include <sstream>
#include <string>
 
class Simulation {
public:
    // TODO: The following members should be private.
 
    MPS mps;
    Loader loader;
    Saver saver;
 
    std::chrono::system_clock::time_point realStartTime, realEndTime;
    double startTime, time, endTime, dt;
    double outputPeriod;
    int timeStep = 0;
 
    Simulation(std::filesystem::path& settingPath, std::filesystem::path& outputDirectory);
 
    void run();
 
private:
    void startSimulation();
 
    template <typename Rep, typename Period> std::string calHourMinuteSecond(std::chrono::duration<Rep, Period> d) {
        auto h = std::chrono::duration_cast<std::chrono::hours>(d);
        d -= h;
        auto m = std::chrono::duration_cast<std::chrono::minutes>(d);
        d -= m;
        auto s = std::chrono::duration_cast<std::chrono::seconds>(d);
 
        std::stringstream out;
        out << h.count() << "h ";
        out << std::setfill('0') << std::setw(2) << m.count() << "m " << s.count() << "s";
        return out.str();
    }
 
    void endSimulation();
 
    void timeStepReport(
        const std::chrono::system_clock::time_point& timeStepStartTime,
        const std::chrono::system_clock::time_point& timeStepEndTime
    );
 
    bool saveCondition();
 
    // NOTE: If this function is also needed in other classes, it should be moved to a separate file.
    std::string getCurrentTimeString();
};