State.hpp

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/*
 * State.hpp
 *
 * Generic State class to hold time, Ah, Wh.
 *
 *  Created on: 02 Sep 2022
 *   Author(s): Jorn Reniers, Volkan Kumtepeli
 */
 
#pragma once
 
#include "../settings/settings.hpp"
#include "../utility/array_util.hpp"
 
#include <array>
#include <algorithm>
 
namespace slide {
 
static double EMPTY_STATE{ 0 }; // To return reference when a state is not defined.
 
template <size_t N, size_t N_cumulative = settings::data::N_CumulativeCell>
struct State : public std::array<double, N + N_cumulative>
{
  enum Index : size_t 
  {
    i_time = N,
    i_Ah,
    i_Wh,
    N_states,
  };
 
  inline auto time() const { return (N_cumulative != 3) ? EMPTY_STATE : (*this)[i_time]; } 
  inline auto Ah() const { return (N_cumulative != 3) ? EMPTY_STATE : (*this)[i_Ah]; }     
  inline auto Wh() const { return (N_cumulative != 3) ? EMPTY_STATE : (*this)[i_Wh]; }     
 
  inline auto &time() { return (N_cumulative != 3) ? EMPTY_STATE : (*this)[i_time]; } 
  inline auto &Ah() { return (N_cumulative != 3) ? EMPTY_STATE : (*this)[i_Ah]; }     
  inline auto &Wh() { return (N_cumulative != 3) ? EMPTY_STATE : (*this)[i_Wh]; }     
 
  constexpr static auto description(size_t i)
  {
    if constexpr (N_cumulative != 3)
      return "";
    else {
      if (i == i_time)
        return "time [s]";
      else if (i == i_Ah)
        return "Current throughput [Ah]";
      else if (i == i_Wh)
        return "Energy throughput [Wh]";
      else
        return "";
    }
  }
 
  inline auto reset() { this->fill(0); }
};
 
} // namespace slide